harmony 鸿蒙UIAbilityContext

2022-12-22
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UIAbilityContext

UIAbilityContext, inherited from Context, provides the context environment for UIAbility. UIAbilityContext provides UIAbility-related configuration and APIs for operating UIAbilities and ServiceExtensionAbilities. For example, you can use the APIs to start a UIAbility, terminate a UIAbility to which the UIAbilityContext belongs, and start, terminate, connect to, or disconnect from a ServiceExtensionAbility.

Modules to Import

import common from '@ohos.app.ability.common';

Attributes

System capability: SystemCapability.Ability.AbilityRuntime.Core

Name	Type	Readable	Writable	Description
abilityInfo	AbilityInfo	Yes	No	UIAbility information.
currentHapModuleInfo	HapModuleInfo	Yes	No	HAP information.
config	Configuration	Yes	No	UIAbility configuration, such as the language and color mode.

UIAbilityContext.startAbility

startAbility(want: Want, callback: AsyncCallback<void>): void;

Starts an ability. This API uses an asynchronous callback to return the result.

Observe the following when using this API: - If an application running in the background needs to call this API to start an ability, it must have the ohos.permission.START_ABILITIES_FROM_BACKGROUND permission. - If exported of the target ability is false in cross-application scenarios, the caller must have the ohos.permission.START_INVISIBLE_ABILITY permission. - For details about the startup rules for the components in the stage model, see Component Startup Rules (Stage Model). - If the ability to start is in another mission stack and the result needs to be returned to the caller, set the want parameter by following the description provided in Want.

System capability: SystemCapability.Ability.AbilityRuntime.Core

Parameters

Name	Type	Mandatory	Description
want	Want	Yes	Want information about the target ability.
callback	AsyncCallback<void>	Yes	Callback used to return the result.

Error codes

ID	Error Message
16000001	The specified ability does not exist.
16000002	Incorrect ability type.
16000004	Can not start invisible component.
16000005	The specified process does not have the permission.
16000006	Cross-user operations are not allowed.
16000008	The crowdtesting application expires.
16000009	An ability cannot be started or stopped in Wukong mode.
16000010	The call with the continuation flag is forbidden.
16000011	The context does not exist.
16000012	The application is controlled.
16000013	The application is controlled by EDM.
16000050	Internal error.
16000053	The ability is not on the top of the UI.
16000055	Installation-free timed out.
16200001	The caller has been released.

For details about the error codes, see Ability Error Codes.

Example

import Want from '@ohos.app.ability.Want';
import { BusinessError } from '@ohos.base';

let want: Want = {
  bundleName: 'com.example.myapplication',
  abilityName: 'EntryAbility'
};

try {
  this.context.startAbility(want, (err: BusinessError) => {
    if (err.code) {
      // Process service logic errors.
      console.error(`startAbility failed, code is ${err.code}, message is ${err.message}`);
      return;
    }
    // Carry out normal service processing.
    console.info('startAbility succeed');
  });
} catch (err) {
  // Process input parameter errors.
  let code = (err as BusinessError).code;
  let message = (err as BusinessError).message;
  console.error(`startAbility failed, code is ${code}, message is ${message}`);
}

UIAbilityContext.startAbility

startAbility(want: Want, options: StartOptions, callback: AsyncCallback<void>): void;

Starts an ability with the start options specified. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Ability.AbilityRuntime.Core

Parameters

Name	Type	Mandatory	Description
want	Want	Yes	Want information about the target ability.
options	StartOptions	Yes	Parameters used for starting the ability.
callback	AsyncCallback<void>	Yes	Callback used to return the result.

Error codes

ID	Error Message
16000001	The specified ability does not exist.
16000002	Incorrect ability type.
16000004	Can not start invisible component.
16000005	The specified process does not have the permission.
16000006	Cross-user operations are not allowed.
16000008	The crowdtesting application expires.
16000009	An ability cannot be started or stopped in Wukong mode.
16000010	The call with the continuation flag is forbidden.
16000011	The context does not exist.
16000012	The application is controlled.
16000013	The application is controlled by EDM.
16000050	Internal error.
16000053	The ability is not on the top of the UI.
16000055	Installation-free timed out.
16200001	The caller has been released.

For details about the error codes, see Ability Error Codes.

Example

import Want from '@ohos.app.ability.Want';
import StartOptions from '@ohos.app.ability.StartOptions';
import { BusinessError } from '@ohos.base';

let want: Want = {
  deviceId: '',
  bundleName: 'com.example.myapplication',
  abilityName: 'EntryAbility'
};
let options: StartOptions = {
  windowMode: 0
};

try {
  this.context.startAbility(want, options, (err: BusinessError) => {
    if (err.code) {
      // Process service logic errors.
      console.error(`startAbility failed, code is ${err.code}, message is ${err.message}`);
      return;
    }
    // Carry out normal service processing.
    console.info('startAbility succeed');
  });
} catch (err) {
  // Process input parameter errors.
  let code = (err as BusinessError).code;
  let message = (err as BusinessError).message;
  console.error(`startAbility failed, code is ${code}, message is ${message}`);
}

UIAbilityContext.startAbility

startAbility(want: Want, options?: StartOptions): Promise<void>;

Starts an ability. This API uses a promise to return the result.

System capability: SystemCapability.Ability.AbilityRuntime.Core

Parameters

Name	Type	Mandatory	Description
want	Want	Yes	Want information about the target ability.
options	StartOptions	No	Parameters used for starting the ability.

Return value

Type	Description
Promise<void>	Promise used to return the result.

Error codes

ID	Error Message
16000001	The specified ability does not exist.
16000002	Incorrect ability type.
16000004	Can not start invisible component.
16000005	The specified process does not have the permission.
16000006	Cross-user operations are not allowed.
16000008	The crowdtesting application expires.
16000009	An ability cannot be started or stopped in Wukong mode.
16000010	The call with the continuation flag is forbidden.
16000011	The context does not exist.
16000012	The application is controlled.
16000013	The application is controlled by EDM.
16000050	Internal error.
16000053	The ability is not on the top of the UI.
16000055	Installation-free timed out.
16200001	The caller has been released.

For details about the error codes, see Ability Error Codes.

Example

import Want from '@ohos.app.ability.Want';
import StartOptions from '@ohos.app.ability.StartOptions';
import { BusinessError } from '@ohos.base';

let want: Want = {
  bundleName: 'com.example.myapplication',
  abilityName: 'EntryAbility'
};
let options: StartOptions = {
  windowMode: 0,
};

try {
  this.context.startAbility(want, options)
    .then(() => {
      // Carry out normal service processing.
      console.info('startAbility succeed');
    })
    .catch((err: BusinessError) => {
      // Process service logic errors.
      console.error(`startAbility failed, code is ${err.code}, message is ${err.message}`);
    });
} catch (err) {
  // Process input parameter errors.
  let code = (err as BusinessError).code;
  let message = (err as BusinessError).message;
  console.error(`startAbility failed, code is ${code}, message is ${message}`);
}

UIAbilityContext.startAbilityForResult

startAbilityForResult(want: Want, callback: AsyncCallback<AbilityResult>): void;

Starts an ability. This API uses an asynchronous callback to return the result when the ability is terminated. The following situations may be possible for a started ability: - Normally, you can call terminateSelfWithResult to terminate the ability. The result is returned to the caller. - If an exception occurs, for example, the ability is killed, an error message, in which resultCode is -1, is returned to the caller. - If different applications call this API to start an ability that uses the singleton mode and then call terminateSelfWithResult to terminate the ability, the normal result is returned to the last caller, and an error message, in which resultCode is -1, is returned to others.

System capability: SystemCapability.Ability.AbilityRuntime.Core

Parameters

Name	Type	Mandatory	Description
want	Want	Yes	Want information about the target ability.
callback	AsyncCallback<AbilityResult>	Yes	Callback used to return the result.

Error codes

ID	Error Message
16000001	The specified ability does not exist.
16000002	Incorrect ability type.
16000004	Can not start invisible component.
16000005	The specified process does not have the permission.
16000006	Cross-user operations are not allowed.
16000008	The crowdtesting application expires.
16000009	An ability cannot be started or stopped in Wukong mode.
16000010	The call with the continuation flag is forbidden.
16000011	The context does not exist.
16000012	The application is controlled.
16000013	The application is controlled by EDM.
16000050	Internal error.
16000053	The ability is not on the top of the UI.
16000055	Installation-free timed out.
16200001	The caller has been released.

For details about the error codes, see Ability Error Codes.

Example

import UIAbility from '@ohos.app.ability.UIAbility';
import AbilityConstant from '@ohos.app.ability.AbilityConstant';
import common from '@ohos.app.ability.common';
import Want from '@ohos.app.ability.Want';
import { BusinessError } from '@ohos.base';

let want: Want = {
  deviceId: '',
  bundleName: 'com.example.myapplication',
  abilityName: 'EntryAbility'
};

try {
  this.context.startAbilityForResult(want, (err: BusinessError, result: common.AbilityResult) => {
    if (err.code) {
      // Process service logic errors.
      console.error(`startAbilityForResult failed, code is ${err.code}, message is ${err.message}`);
      return;
    // Carry out normal service processing.
    console.info('startAbilityForResult succeed');
  });
} catch (err) {
  // Process input parameter errors.
  let code = (err as BusinessError).code;
  let message = (err as BusinessError).message;
  console.error(`startAbilityForResult failed, code is ${code}, message is ${message}`);
}

UIAbilityContext.startAbilityForResult

startAbilityForResult(want: Want, options: StartOptions, callback: AsyncCallback<AbilityResult>): void;

Starts an ability with the start options specified. This API uses an asynchronous callback to return the result when the ability is terminated. The following situations may be possible for a started ability: - Normally, you can call terminateSelfWithResult to terminate the ability. The result is returned to the caller. - If an exception occurs, for example, the ability is killed, an error message, in which resultCode is -1, is returned to the caller. - If different applications call this API to start an ability that uses the singleton mode and then call terminateSelfWithResult to terminate the ability, the normal result is returned to the last caller, and an error message, in which resultCode is -1, is returned to others.

System capability: SystemCapability.Ability.AbilityRuntime.Core

Parameters

Name	Type	Mandatory	Description
want	Want	Yes	Want information about the target ability.
options	StartOptions	Yes	Parameters used for starting the ability.
callback	AsyncCallback<AbilityResult>	Yes	Callback used to return the result.

Error codes

ID	Error Message
16000001	The specified ability does not exist.
16000002	Incorrect ability type.
16000004	Can not start invisible component.
16000005	The specified process does not have the permission.
16000006	Cross-user operations are not allowed.
16000008	The crowdtesting application expires.
16000009	An ability cannot be started or stopped in Wukong mode.
16000010	The call with the continuation flag is forbidden.
16000011	The context does not exist.
16000012	The application is controlled.
16000013	The application is controlled by EDM.
16000050	Internal error.
16000053	The ability is not on the top of the UI.
16000055	Installation-free timed out.
16200001	The caller has been released.

For details about the error codes, see Ability Error Codes.

Example

import UIAbility from '@ohos.app.ability.UIAbility';
import AbilityConstant from '@ohos.app.ability.AbilityConstant';
import common from '@ohos.app.ability.common';
import Want from '@ohos.app.ability.Want';
import StartOptions from '@ohos.app.ability.StartOptions';
import { BusinessError } from '@ohos.base';

let want: Want = {
  deviceId: '',
  bundleName: 'com.example.myapplication',
  abilityName: 'EntryAbility'
};
let options: StartOptions = {
  windowMode: 0,
};

try {
  this.context.startAbilityForResult(want, options, (err: BusinessError, result: common.AbilityResult) => {
    if (err.code) {
      // Process service logic errors.
      console.error(`startAbilityForResult failed, code is ${err.code}, message is ${err.message}`);  
      return;
    }
    // Carry out normal service processing.
    console.info('startAbilityForResult succeed');
  });
} catch (err) {
  // Process input parameter errors.
  let code = (err as BusinessError).code;
  let message = (err as BusinessError).message;
  console.error(`startAbilityForResult failed, code is ${code}, message is ${message}`);
}

UIAbilityContext.startAbilityForResult

startAbilityForResult(want: Want, options?: StartOptions): Promise<AbilityResult>;

Starts an ability. This API uses a promise to return the result when the ability is terminated. The following situations may be possible for a started ability: - Normally, you can call terminateSelfWithResult to terminate the ability. The result is returned to the caller. - If an exception occurs, for example, the ability is killed, an error message, in which resultCode is -1, is returned to the caller. - If different applications call this API to start an ability that uses the singleton mode and then call terminateSelfWithResult to terminate the ability, the normal result is returned to the last caller, and an error message, in which resultCode is -1, is returned to others.

System capability: SystemCapability.Ability.AbilityRuntime.Core

Parameters

Name	Type	Mandatory	Description
want	Want	Yes	Want information about the target ability.
options	StartOptions	No	Parameters used for starting the ability.

Return value

Type	Description
Promise<AbilityResult>	Promise used to return the result.

Error codes

ID	Error Message
16000001	The specified ability does not exist.
16000002	Incorrect ability type.
16000004	Can not start invisible component.
16000005	The specified process does not have the permission.
16000006	Cross-user operations are not allowed.
16000008	The crowdtesting application expires.
16000009	An ability cannot be started or stopped in Wukong mode.
16000010	The call with the continuation flag is forbidden.
16000011	The context does not exist.
16000012	The application is controlled.
16000013	The application is controlled by EDM.
16000050	Internal error.
16000053	The ability is not on the top of the UI.
16000055	Installation-free timed out.
16200001	The caller has been released.

For details about the error codes, see Ability Error Codes.

Example

import UIAbility from '@ohos.app.ability.UIAbility';
import AbilityConstant from '@ohos.app.ability.AbilityConstant';
import common from '@ohos.app.ability.common';
import Want from '@ohos.app.ability.Want';
import StartOptions from '@ohos.app.ability.StartOptions';
import { BusinessError } from '@ohos.base';

let want: Want = {
  bundleName: 'com.example.myapplication',
  abilityName: 'EntryAbility'
};
let options: StartOptions = {
  windowMode: 0,
};

try {
  this.context.startAbilityForResult(want, options)
    .then((result: common.AbilityResult) => {
      // Carry out normal service processing.
      console.info('startAbilityForResult succeed');
    })
    .catch((err: BusinessError) => {
      // Process service logic errors.
      console.error(`startAbilityForResult failed, code is ${err.code}, message is ${err.message}`);
    });
} catch (err) {
  // Process input parameter errors.
  let code = (err as BusinessError).code;
  let message = (err as BusinessError).message;
  console.error(`startAbilityForResult failed, code is ${code}, message is ${message}`);
}

UIAbilityContext.startAbilityForResultWithAccount

startAbilityForResultWithAccount(want: Want, accountId: number, callback: AsyncCallback<AbilityResult>): void;

Starts an ability with the account ID specified. This API uses an asynchronous callback to return the result when the ability is terminated.

Required permissions: ohos.permission.INTERACT_ACROSS_LOCAL_ACCOUNTS

System capability: SystemCapability.Ability.AbilityRuntime.Core

System API: This is a system API and cannot be called by third-party applications.

Parameters

Name	Type	Mandatory	Description
want	Want	Yes	Want information about the target ability.
accountId	number	Yes	ID of a system account. For details, see getCreatedOsAccountsCount.
callback	AsyncCallback<AbilityResult>	Yes	Callback used to return the result.

Error codes

ID	Error Message
16000001	The specified ability does not exist.
16000002	Incorrect ability type.
16000004	Can not start invisible component.
16000005	The specified process does not have the permission.
16000006	Cross-user operations are not allowed.
16000008	The crowdtesting application expires.
16000009	An ability cannot be started or stopped in Wukong mode.
16000010	The call with the continuation flag is forbidden.
16000011	The context does not exist.
16000012	The application is controlled.
16000013	The application is controlled by EDM.
16000050	Internal error.
16000053	The ability is not on the top of the UI.
16000055	Installation-free timed out.
16200001	The caller has been released.

For details about the error codes, see Ability Error Codes.

Example

import UIAbility from '@ohos.app.ability.UIAbility';
import AbilityConstant from '@ohos.app.ability.AbilityConstant';
import common from '@ohos.app.ability.common';
import Want from '@ohos.app.ability.Want';
import { BusinessError } from '@ohos.base';

let want: Want = {
  deviceId: '',
  bundleName: 'com.example.myapplication',
  abilityName: 'EntryAbility'
};
let accountId = 100;

try {
  this.context.startAbilityForResultWithAccount(want, accountId, (err: BusinessError, result: common.AbilityResult) => {
    if (err.code) {
      // Process service logic errors.
      console.error(`startAbilityForResultWithAccount failed, code is ${err.code}, message is ${err.message}`);
      return;
    }
    // Carry out normal service processing.
    console.info('startAbilityForResultWithAccount succeed');
  });
} catch (err) {
  // Process input parameter errors.
  let code = (err as BusinessError).code;
  let message = (err as BusinessError).message;
  console.error(`startAbilityForResultWithAccount failed, code is ${code}, message is ${message}`);
}

UIAbilityContext.startAbilityForResultWithAccount

startAbilityForResultWithAccount(want: Want, accountId: number, options: StartOptions, callback: AsyncCallback<void>): void;

Starts an ability with the start options and account ID specified. This API uses an asynchronous callback to return the result when the ability is terminated.

Required permissions: ohos.permission.INTERACT_ACROSS_LOCAL_ACCOUNTS

System capability: SystemCapability.Ability.AbilityRuntime.Core

System API: This is a system API and cannot be called by third-party applications.

Parameters

Name	Type	Mandatory	Description
want	Want	Yes	Want information about the target ability.
accountId	number	Yes	ID of a system account. For details, see getCreatedOsAccountsCount.
options	StartOptions	Yes	Parameters used for starting the ability.
callback	AsyncCallback<void>	Yes	Callback invoked when the ability is terminated.

Error codes

ID	Error Message
16000001	The specified ability does not exist.
16000002	Incorrect ability type.
16000004	Can not start invisible component.
16000005	The specified process does not have the permission.
16000006	Cross-user operations are not allowed.
16000008	The crowdtesting application expires.
16000009	An ability cannot be started or stopped in Wukong mode.
16000010	The call with the continuation flag is forbidden.
16000011	The context does not exist.
16000012	The application is controlled.
16000013	The application is controlled by EDM.
16000050	Internal error.
16000053	The ability is not on the top of the UI.
16000055	Installation-free timed out.
16200001	The caller has been released.

For details about the error codes, see Ability Error Codes.

Example

import Want from '@ohos.app.ability.Want';
import StartOptions from '@ohos.app.ability.StartOptions';
import { BusinessError } from '@ohos.base';

let want: Want = {
  deviceId: '',
  bundleName: 'com.example.myapplication',
  abilityName: 'EntryAbility'
};
let accountId = 100;
let options: StartOptions = {
  windowMode: 0
};

try {
  this.context.startAbilityForResultWithAccount(want, accountId, options, (err: BusinessError) => {
    if (err.code) {
      // Process service logic errors.
      console.error(`startAbilityForResultWithAccount failed, code is ${err.code}, message is ${err.message}`);
      return;
    }
    // Carry out normal service processing.
    console.info('startAbilityForResultWithAccount succeed');
  });
} catch (err) {
  // Process input parameter errors.
  let code = (err as BusinessError).code;
  let message = (err as BusinessError).message;
  console.error(`startAbilityForResultWithAccount failed, code is ${code}, message is ${message}`);
}

UIAbilityContext.startAbilityForResultWithAccount

startAbilityForResultWithAccount(want: Want, accountId: number, options?: StartOptions): Promise<AbilityResult>;

Starts an ability with the account ID specified. This API uses a promise to return the result when the ability is terminated.

Required permissions: ohos.permission.INTERACT_ACROSS_LOCAL_ACCOUNTS

System capability: SystemCapability.Ability.AbilityRuntime.Core

System API: This is a system API and cannot be called by third-party applications.

Parameters

Name	Type	Mandatory	Description
want	Want	Yes	Want information about the target ability.
accountId	number	Yes	ID of a system account. For details, see getCreatedOsAccountsCount.
options	StartOptions	No	Parameters used for starting the ability.

Return value

Type	Description
Promise<AbilityResult>	Promise used to return the ability result when the ability is terminated.

Error codes

ID	Error Message
16000001	The specified ability does not exist.
16000002	Incorrect ability type.
16000004	Can not start invisible component.
16000005	The specified process does not have the permission.
16000006	Cross-user operations are not allowed.
16000008	The crowdtesting application expires.
16000009	An ability cannot be started or stopped in Wukong mode.
16000010	The call with the continuation flag is forbidden.
16000011	The context does not exist.
16000012	The application is controlled.
16000013	The application is controlled by EDM.
16000050	Internal error.
16000053	The ability is not on the top of the UI.
16000055	Installation-free timed out.
16200001	The caller has been released.

For details about the error codes, see Ability Error Codes.

Example

import UIAbility from '@ohos.app.ability.UIAbility';
import AbilityConstant from '@ohos.app.ability.AbilityConstant';
import common from '@ohos.app.ability.common';
import Want from '@ohos.app.ability.Want';
import StartOptions from '@ohos.app.ability.StartOptions';
import { BusinessError } from '@ohos.base';

let want: Want = {
  deviceId: '',
  bundleName: 'com.example.myapplication',
  abilityName: 'EntryAbility'
};
let accountId = 100;
let options: StartOptions = {
  windowMode: 0
};

try {
  this.context.startAbilityForResultWithAccount(want, accountId, options)
    .then((result: common.AbilityResult) => {
      // Carry out normal service processing.
      console.info('startAbilityForResultWithAccount succeed');
    })
    .catch((err: BusinessError) => {
      // Process service logic errors.
      console.error(`startAbilityForResultWithAccount failed, code is ${err.code}, message is ${err.message}`);
    });
} catch (err) {
  // Process input parameter errors.
  let code = (err as BusinessError).code;
  let message = (err as BusinessError).message;
  console.error(`startAbilityForResultWithAccount failed, code is ${code}, message is ${message}`);
}

UIAbilityContext.startServiceExtensionAbility

startServiceExtensionAbility(want: Want, callback: AsyncCallback<void>): void;

Starts a ServiceExtensionAbility. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Ability.AbilityRuntime.Core

System API: This is a system API and cannot be called by third-party applications.

Parameters

Name	Type	Mandatory	Description
want	Want	Yes	Want information about the target ServiceExtensionAbility.
callback	AsyncCallback<void>	Yes	Callback used to return the result.

Error codes

ID	Error Message
16000001	The specified ability does not exist.
16000002	Incorrect ability type.
16000004	Can not start invisible component.
16000005	The specified process does not have the permission.
16000006	Cross-user operations are not allowed.
16000008	The crowdtesting application expires.
16000011	The context does not exist.
16000012	The application is controlled.
16000013	The application is controlled by EDM.
16000050	Internal error.
16200001	The caller has been released.

For details about the error codes, see Ability Error Codes.

Example

import Want from '@ohos.app.ability.Want';
import { BusinessError } from '@ohos.base';

let want: Want = {
  deviceId: '',
  bundleName: 'com.example.myapplication',
  abilityName: 'ServiceExtensionAbility'
};

try {
  this.context.startServiceExtensionAbility(want)
    .then(() => {
      // Carry out normal service processing.
      console.info('startServiceExtensionAbility succeed');
    })
    .catch((err: BusinessError) => {
      // Process service logic errors.
      console.error(`startServiceExtensionAbility failed, code is ${err.code}, message is ${err.message}`);
    });
} catch (err) {
  // Process input parameter errors.
  let code = (err as BusinessError).code;
  let message = (err as BusinessError).message;
  console.error(`startServiceExtensionAbility failed, code is ${code}, message is ${message}`);
}

UIAbilityContext.startServiceExtensionAbility

startServiceExtensionAbility(want: Want): Promise<void>;

Starts a ServiceExtensionAbility. This API uses a promise to return the result.

System capability: SystemCapability.Ability.AbilityRuntime.Core

System API: This is a system API and cannot be called by third-party applications.

Parameters

Name	Type	Mandatory	Description
want	Want	Yes	Want information about the target ServiceExtensionAbility.

Error codes

ID	Error Message
16000001	The specified ability does not exist.
16000002	Incorrect ability type.
16000004	Can not start invisible component.
16000005	The specified process does not have the permission.
16000006	Cross-user operations are not allowed.
16000008	The crowdtesting application expires.
16000011	The context does not exist.
16000012	The application is controlled.
16000013	The application is controlled by EDM.
16000050	Internal error.
16200001	The caller has been released.

For details about the error codes, see Ability Error Codes.

Example

import Want from '@ohos.app.ability.Want';
import { BusinessError } from '@ohos.base';

let want: Want = {
  deviceId: '',
  bundleName: 'com.example.myapplication',
  abilityName: 'ServiceExtensionAbility'
};

try {
  this.context.startServiceExtensionAbility(want)
    .then(() => {
      // Carry out normal service processing.
      console.info('startServiceExtensionAbility succeed');
    })
    .catch((err: BusinessError) => {
      // Process service logic errors.
      console.error(`startServiceExtensionAbility failed, code is ${err.code}, message is ${err.message}`);
    });
} catch (err) {
  // Process input parameter errors.
  let code = (err as BusinessError).code;
  let message = (err as BusinessError).message;
  console.error(`startServiceExtensionAbility failed, code is ${code}, message is ${message}`);
}

UIAbilityContext.startServiceExtensionAbilityWithAccount

startServiceExtensionAbilityWithAccount(want: Want, accountId: number, callback: AsyncCallback<void>): void;

Starts a ServiceExtensionAbility with the account ID specified. This API uses an asynchronous callback to return the result.

Required permissions: ohos.permission.INTERACT_ACROSS_LOCAL_ACCOUNTS

System capability: SystemCapability.Ability.AbilityRuntime.Core

System API: This is a system API and cannot be called by third-party applications.

Parameters

Name	Type	Mandatory	Description
want	Want	Yes	Want information about the target ServiceExtensionAbility.
accountId	number	Yes	ID of a system account. For details, see getCreatedOsAccountsCount.
callback	AsyncCallback<void>	Yes	Callback used to return the result.

Error codes

ID	Error Message
16000001	The specified ability does not exist.
16000002	Incorrect ability type.
16000004	Can not start invisible component.
16000005	The specified process does not have the permission.
16000006	Cross-user operations are not allowed.
16000008	The crowdtesting application expires.
16000011	The context does not exist.
16000012	The application is controlled.
16000013	The application is controlled by EDM.
16000050	Internal error.
16200001	The caller has been released.

For details about the error codes, see Ability Error Codes.

Example

import Want from '@ohos.app.ability.Want';
import { BusinessError } from '@ohos.base';

let want: Want = {
  deviceId: '',
  bundleName: 'com.example.myapplication',
  abilityName: 'ServiceExtensionAbility'
};
let accountId = 100;

try {
  this.context.startServiceExtensionAbilityWithAccount(want, accountId, (err: BusinessError) => {
    if (err.code) {
      // Process service logic errors.
      console.error(`startServiceExtensionAbilityWithAccount failed, code is ${err.code}, message is ${err.message}`);
      return;
    }
    // Carry out normal service processing.
    console.info('startServiceExtensionAbilityWithAccount succeed');
  });
} catch (err) {
  // Process input parameter errors.
  let code = (err as BusinessError).code;
  let message = (err as BusinessError).message;
  console.error(`startServiceExtensionAbilityWithAccount failed, code is ${code}, message is ${message}`);
}

UIAbilityContext.startServiceExtensionAbilityWithAccount

startServiceExtensionAbilityWithAccount(want: Want, accountId: number): Promise<void>;

Starts a ServiceExtensionAbility with the account ID specified. This API uses a promise to return the result.

Required permissions: ohos.permission.INTERACT_ACROSS_LOCAL_ACCOUNTS

System capability: SystemCapability.Ability.AbilityRuntime.Core

System API: This is a system API and cannot be called by third-party applications.

Parameters

Name	Type	Mandatory	Description
want	Want	Yes	Want information about the target ability.
accountId	number	Yes	ID of a system account. For details, see getCreatedOsAccountsCount.

Error codes

ID	Error Message
16000001	The specified ability does not exist.
16000002	Incorrect ability type.
16000004	Can not start invisible component.
16000005	The specified process does not have the permission.
16000006	Cross-user operations are not allowed.
16000008	The crowdtesting application expires.
16000011	The context does not exist.
16000012	The application is controlled.
16000013	The application is controlled by EDM.
16000050	Internal error.
16200001	The caller has been released.

For details about the error codes, see Ability Error Codes.

Example

import Want from '@ohos.app.ability.Want';
import { BusinessError } from '@ohos.base';

let want: Want = {
  deviceId: '',
  bundleName: 'com.example.myapplication',
  abilityName: 'ServiceExtensionAbility'
};
let accountId = 100;

try {
  this.context.startServiceExtensionAbilityWithAccount(want, accountId)
    .then(() => {
      // Carry out normal service processing.
      console.info('startServiceExtensionAbilityWithAccount succeed');
    })
    .catch((err: BusinessError) => {
      // Process service logic errors.
      console.error(`startServiceExtensionAbilityWithAccount failed, code is ${err.code}, message is ${err.message}`);
    });
} catch (err) {
  // Process input parameter errors.
  let code = (err as BusinessError).code;
  let message = (err as BusinessError).message;
  console.error(`startServiceExtensionAbilityWithAccount failed, code is ${code}, message is ${message}`);
}

UIAbilityContext.stopServiceExtensionAbility

stopServiceExtensionAbility(want: Want, callback: AsyncCallback<void>): void;

Stops a ServiceExtensionAbility in the same application. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Ability.AbilityRuntime.Core

System API: This is a system API and cannot be called by third-party applications.

Parameters

Name	Type	Mandatory	Description
want	Want	Yes	Want information about the target ServiceExtensionAbility.
callback	AsyncCallback<void>	Yes	Callback used to return the result.

Error codes

ID	Error Message
16000001	The specified ability does not exist.
16000002	Incorrect ability type.
16000004	Can not start invisible component.
16000005	The specified process does not have the permission.
16000006	Cross-user operations are not allowed.
16000011	The context does not exist.
16000012	The application is controlled.
16000013	The application is controlled by EDM.
16000050	Internal error.
16200001	The caller has been released.

For details about the error codes, see Ability Error Codes.

Example

import Want from '@ohos.app.ability.Want';
import { BusinessError } from '@ohos.base';

let want: Want = {
  deviceId: '',
  bundleName: 'com.example.myapplication',
  abilityName: 'ServiceExtensionAbility'
};

try {
  this.context.stopServiceExtensionAbility(want, (err: BusinessError) => {
    if (err.code) {
      // Process service logic errors.
      console.error(`stopServiceExtensionAbility failed, code is ${err.code}, message is ${err.message}`);
      return;
    }
    // Carry out normal service processing.
    console.info('stopServiceExtensionAbility succeed');
  });
} catch (err) {
  // Process input parameter errors.
  let code = (err as BusinessError).code;
  let message = (err as BusinessError).message;
  console.error(`stopServiceExtensionAbility failed, code is ${code}, message is ${message}`);
}

UIAbilityContext.stopServiceExtensionAbility

stopServiceExtensionAbility(want: Want): Promise<void>;

Stops a ServiceExtensionAbility in the same application. This API uses a promise to return the result.

System capability: SystemCapability.Ability.AbilityRuntime.Core

System API: This is a system API and cannot be called by third-party applications.

Parameters

Name	Type	Mandatory	Description
want	Want	Yes	Want information about the target ServiceExtensionAbility.

Error codes

ID	Error Message
16000001	The specified ability does not exist.
16000002	Incorrect ability type.
16000004	Can not start invisible component.
16000005	The specified process does not have the permission.
16000006	Cross-user operations are not allowed.
16000011	The context does not exist.
16000050	Internal error.
16200001	The caller has been released.

For details about the error codes, see Ability Error Codes.

Example

import Want from '@ohos.app.ability.Want';
import { BusinessError } from '@ohos.base';

let want: Want = {
  deviceId: '',
  bundleName: 'com.example.myapplication',
  abilityName: 'ServiceExtensionAbility'
};

try {
  this.context.stopServiceExtensionAbility(want)
    .then(() => {
      // Carry out normal service processing.
      console.info('stopServiceExtensionAbility succeed');
    })
    .catch((err: BusinessError) => {
      // Process service logic errors.
      console.error(`stopServiceExtensionAbility failed, code is ${err.code}, message is ${err.message}`);
    });
} catch (err) {
  // Process input parameter errors.
  let code = (err as BusinessError).code;
  let message = (err as BusinessError).message;
  console.error(`stopServiceExtensionAbility failed, code is ${code}, message is ${message}`);
}

UIAbilityContext.stopServiceExtensionAbilityWithAccount

stopServiceExtensionAbilityWithAccount(want: Want, accountId: number, callback: AsyncCallback<void>): void;

Stops a ServiceExtensionAbility with the account ID specified in the same application. This API uses an asynchronous callback to return the result.

Required permissions: ohos.permission.INTERACT_ACROSS_LOCAL_ACCOUNTS

System capability: SystemCapability.Ability.AbilityRuntime.Core

System API: This is a system API and cannot be called by third-party applications.

Parameters

Name	Type	Mandatory	Description
want	Want	Yes	Want information about the target ServiceExtensionAbility.
accountId	number	Yes	ID of a system account. For details, see getCreatedOsAccountsCount.
callback	AsyncCallback<void>	Yes	Callback used to return the result.

Error codes

ID	Error Message
16000001	The specified ability does not exist.
16000002	Incorrect ability type.
16000004	Can not start invisible component.
16000005	The specified process does not have the permission.
16000006	Cross-user operations are not allowed.
16000011	The context does not exist.
16000050	Internal error.
16200001	The caller has been released.

For details about the error codes, see Ability Error Codes.

Example

import Want from '@ohos.app.ability.Want';
import { BusinessError } from '@ohos.base';

let want: Want = {
  deviceId: '',
  bundleName: 'com.example.myapplication',
  abilityName: 'ServiceExtensionAbility'
};
let accountId = 100;

try {
  this.context.stopServiceExtensionAbilityWithAccount(want, accountId, (err: BusinessError) => {
    if (err.code) {
      // Process service logic errors.
      console.error(`stopServiceExtensionAbilityWithAccount failed, code is ${err.code}, message is ${err.message}`);
      return;
    }
    // Carry out normal service processing.
    console.info('stopServiceExtensionAbilityWithAccount succeed');
  });
} catch (err) {
  // Process input parameter errors.
  let code = (err as BusinessError).code;
  let message = (err as BusinessError).message;
  console.error(`stopServiceExtensionAbilityWithAccount failed, code is ${code}, message is ${message}`);
}

UIAbilityContext.stopServiceExtensionAbilityWithAccount

stopServiceExtensionAbilityWithAccount(want: Want, accountId: number): Promise<void>;

Stops a ServiceExtensionAbility with the account ID specified in the same application. This API uses a promise to return the result.

Required permissions: ohos.permission.INTERACT_ACROSS_LOCAL_ACCOUNTS

System capability: SystemCapability.Ability.AbilityRuntime.Core

System API: This is a system API and cannot be called by third-party applications.

Parameters

Name	Type	Mandatory	Description
want	Want	Yes	Want information about the target ServiceExtensionAbility.
accountId	number	Yes	ID of a system account. For details, see getCreatedOsAccountsCount.

Error codes

ID	Error Message
16000001	The specified ability does not exist.
16000002	Incorrect ability type.
16000004	Can not start invisible component.
16000005	The specified process does not have the permission.
16000006	Cross-user operations are not allowed.
16000011	The context does not exist.
16000050	Internal error.
16200001	The caller has been released.

For details about the error codes, see Ability Error Codes.

Example

import Want from '@ohos.app.ability.Want';
import { BusinessError } from '@ohos.base';

let want: Want = {
  deviceId: '',
  bundleName: 'com.example.myapplication',
  abilityName: 'ServiceExtensionAbility'
};
let accountId = 100;

try {
  this.context.stopServiceExtensionAbilityWithAccount(want, accountId)
    .then(() => {
      // Carry out normal service processing.
      console.info('stopServiceExtensionAbilityWithAccount succeed');
    })
    .catch((err: BusinessError) => {
      // Process service logic errors.
      console.error(`stopServiceExtensionAbilityWithAccount failed, code is ${err.code}, message is ${err.message}`);
    });
} catch (err) {
  // Process input parameter errors.
  let code = (err as BusinessError).code;
  let message = (err as BusinessError).message;
  console.error(`stopServiceExtensionAbilityWithAccount failed, code is ${code}, message is ${message}`);
}

UIAbilityContext.terminateSelf

terminateSelf(callback: AsyncCallback<void>): void;

Terminates this ability. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Ability.AbilityRuntime.Core

Parameters

Name	Type	Mandatory	Description
callback	AsyncCallback<void>	Yes	Callback used to return the result.

Error codes

ID	Error Message
16000001	The specified ability does not exist.
16000004	Can not start invisible component.
16000005	The specified process does not have the permission.
16000009	An ability cannot be started or stopped in Wukong mode.
16000011	The context does not exist.
16000050	Internal error.

For details about the error codes, see Ability Error Codes.

Example

  import { BusinessError } from '@ohos.base';

  try {
    this.context.terminateSelf((err: BusinessError) => {
      if (err.code) {
        // Process service logic errors.
        console.error(`terminateSelf failed, code is ${err.code}, message is ${err.message}`);
        return;
      }
      // Carry out normal service processing.
      console.info('terminateSelf succeed');
    });
  } catch (err) {
    // Capture the synchronization parameter error.
    let code = (err as BusinessError).code;
    let message = (err as BusinessError).message;
    console.error(`terminateSelf failed, code is ${code}, message is ${message}`);
  }

UIAbilityContext.terminateSelf

terminateSelf(): Promise<void>;

Terminates this ability. This API uses a promise to return the result.

System capability: SystemCapability.Ability.AbilityRuntime.Core

Return value

Type	Description
Promise<void>	Promise used to return the result.

Error codes

ID	Error Message
16000001	The specified ability does not exist.
16000004	Can not start invisible component.
16000005	The specified process does not have the permission.
16000009	An ability cannot be started or stopped in Wukong mode.
16000011	The context does not exist.
16000050	Internal error.

For details about the error codes, see Ability Error Codes.

Example

  import { BusinessError } from '@ohos.base';

  try {
    this.context.terminateSelf()
      .then(() => {
        // Carry out normal service processing.
        console.info('terminateSelf succeed');
      })
      .catch((err: BusinessError) => {
        // Process service logic errors.
        console.error(`terminateSelf failed, code is ${err.code}, message is ${err.message}`);
      });
  } catch (err) {
    // Capture the synchronization parameter error.
    let code = (err as BusinessError).code;
    let message = (err as BusinessError).message;
    console.error(`terminateSelf failed, code is ${code}, message is ${message}`);
  }

UIAbilityContext.terminateSelfWithResult

terminateSelfWithResult(parameter: AbilityResult, callback: AsyncCallback<void>): void;

Terminates this ability. If the ability is started by calling startAbilityForResult, the result is returned to the caller in the form of an asynchronous callback when terminateSelfWithResult is called. Otherwise, no result is returned to the caller when terminateSelfWithResult is called.

System capability: SystemCapability.Ability.AbilityRuntime.Core

Parameters

Name	Type	Mandatory	Description
parameter	AbilityResult	Yes	Information returned to the caller.
callback	AsyncCallback<void>	Yes	Callback used to return the result.

Error codes

ID	Error Message
16000001	The specified ability does not exist.
16000004	Can not start invisible component.
16000005	The specified process does not have the permission.
16000009	An ability cannot be started or stopped in Wukong mode.
16000011	The context does not exist.
16000050	Internal error.

For details about the error codes, see Ability Error Codes.

Example

import UIAbility from '@ohos.app.ability.UIAbility';
import common from '@ohos.app.ability.common'; 
import Want from '@ohos.app.ability.Want';
import { BusinessError } from '@ohos.base';

let want: Want = {
  bundleName: 'com.example.myapplication',
  abilityName: 'EntryAbility'
};
let resultCode = 100;
// AbilityResult information returned to the caller.
let abilityResult: common.AbilityResult = {
  want,
  resultCode
};

try {
  this.context.terminateSelfWithResult(abilityResult, (err: BusinessError) => {
    if (err.code) {
      // Process service logic errors.
      console.error(`terminateSelfWithResult failed, code is ${err.code}, message is ${err.message}`);
      return;
    }
    // Carry out normal service processing.
    console.info('terminateSelfWithResult succeed');
  });
} catch (err) {
  // Process input parameter errors.
  let code = (err as BusinessError).code;
  let message = (err as BusinessError).message;
  console.error(`terminateSelfWithResult failed, code is ${code}, message is ${message}`);
}

UIAbilityContext.terminateSelfWithResult

terminateSelfWithResult(parameter: AbilityResult): Promise<void>;

Terminates this ability. If the ability is started by calling startAbilityForResult, the result is returned to the caller in the form of a promise when terminateSelfWithResult is called. Otherwise, no result is returned to the caller when terminateSelfWithResult is called.

System capability: SystemCapability.Ability.AbilityRuntime.Core

Parameters

Name	Type	Mandatory	Description
parameter	AbilityResult	Yes	Information returned to the caller.

Return value

Type	Description
Promise<void>	Promise used to return the result.

Error codes

ID	Error Message
16000001	The specified ability does not exist.
16000004	Can not start invisible component.
16000005	The specified process does not have the permission.
16000009	An ability cannot be started or stopped in Wukong mode.
16000011	The context does not exist.
16000050	Internal error.

For details about the error codes, see Ability Error Codes.

Example

import UIAbility from '@ohos.app.ability.UIAbility';
import common from '@ohos.app.ability.common';
import Want from '@ohos.app.ability.Want';
import { BusinessError } from '@ohos.base';

let want: Want = {
  bundleName: 'com.example.myapplication',
  abilityName: 'EntryAbility'
};
let resultCode = 100;
// AbilityResult information returned to the caller.
let abilityResult: common.AbilityResult = {
  want,
  resultCode
};

try {
  this.context.terminateSelfWithResult(abilityResult)
    .then(() => {
      // Carry out normal service processing.
      console.info('terminateSelfWithResult succeed');
    })
    .catch((err: BusinessError) => {
      // Process service logic errors.
      console.error(`terminateSelfWithResult failed, code is ${err.code}, message is ${err.message}`);
    });
} catch (err) {
  // Process input parameter errors.
  let code = (err as BusinessError).code;
  let message = (err as BusinessError).message;
  console.error(`terminateSelfWithResult failed, code is ${code}, message is ${message}`);
}

UIAbilityContext.connectServiceExtensionAbility

connectServiceExtensionAbility(want: Want, options: ConnectOptions): number;

Connects this ability to an ability that uses the AbilityInfo.AbilityType.SERVICE template.

System capability: SystemCapability.Ability.AbilityRuntime.Core

Parameters

Name	Type	Mandatory	Description
want	Want	Yes	Want information for connecting to the ServiceExtensionAbility.
options	ConnectOptions	Yes	Instance of the callback function after the connection to the ServiceExtensionAbility is set up.

Return value

Type	Description
number	Result code of the ability connection.

Error codes

ID	Error Message
16000001	The specified ability does not exist.
16000002	Incorrect ability type.
16000004	Can not start invisible component.
16000005	The specified process does not have the permission.
16000006	Cross-user operations are not allowed.
16000008	The crowdtesting application expires.
16000053	The ability is not on the top of the UI.
16000055	Installation-free timed out.
16000011	The context does not exist.
16000050	Internal error.

For details about the error codes, see Ability Error Codes.

Example

import UIAbility from '@ohos.app.ability.UIAbility';
import common from '@ohos.app.ability.common';
import Want from '@ohos.app.ability.Want';
import { BusinessError } from '@ohos.base';
import rpc from '@ohos.rpc';

let want: Want = {
  deviceId: '',
  bundleName: 'com.example.myapplication',
  abilityName: 'ServiceExtensionAbility'
};
let commRemote: rpc.IRemoteObject;
let options: common.ConnectOptions = {
  onConnect(elementName, remote) {
    commRemote = remote;
    console.info('onConnect...')
  },
  onDisconnect(elementName) {
    console.info('onDisconnect...')
  },
  onFailed(code) {
    console.info('onFailed...')
  }
};
let connection: number;
try {
  connection = this.context.connectServiceExtensionAbility(want, options);
} catch (err) {
  // Process input parameter errors.
  let code = (err as BusinessError).code;
  let message = (err as BusinessError).message;
  console.error(`connectServiceExtensionAbility failed, code is ${code}, message is ${message}`);
}

UIAbilityContext.connectServiceExtensionAbilityWithAccount

connectServiceExtensionAbilityWithAccount(want: Want, accountId: number, options: ConnectOptions): number;

Connects this ability to an ability that uses the AbilityInfo.AbilityType.SERVICE template, with the account ID specified.

Required permissions: ohos.permission.INTERACT_ACROSS_LOCAL_ACCOUNTS

System capability: SystemCapability.Ability.AbilityRuntime.Core

System API: This is a system API and cannot be called by third-party applications.

Parameters

Name	Type	Mandatory	Description
want	Want	Yes	Want information about the target ability.
accountId	number	Yes	ID of a system account. For details, see getCreatedOsAccountsCount.
options	ConnectOptions	Yes	Instance of the callback function after the connection to the ServiceExtensionAbility is set up.

Return value

Type	Description
number	Result code of the ability connection.

Error codes

ID	Error Message
16000001	The specified ability does not exist.
16000002	Incorrect ability type.
16000004	Can not start invisible component.
16000005	The specified process does not have the permission.
16000006	Cross-user operations are not allowed.
16000008	The crowdtesting application expires.
16000053	The ability is not on the top of the UI.
16000055	Installation-free timed out.
16000011	The context does not exist.
16000050	Internal error.

For details about the error codes, see Ability Error Codes.

Example

import UIAbility from '@ohos.app.ability.UIAbility';
import common from '@ohos.app.ability.common';
import Want from '@ohos.app.ability.Want';
import { BusinessError } from '@ohos.base';
import rpc from '@ohos.rpc';

let want: Want = {
  deviceId: '',
  bundleName: 'com.example.myapplication',
  abilityName: 'ServiceExtensionAbility'
};
let accountId = 100;
let commRemote: rpc.IRemoteObject;
let options: common.ConnectOptions = {
  onConnect(elementName, remote) {
    commRemote = remote;
    console.info('onConnect...')
  },
  onDisconnect(elementName) {
    console.info('onDisconnect...')
  },
  onFailed(code) {
    console.info('onFailed...')
  }
};
let connection: number;
try {
  connection = this.context.connectServiceExtensionAbilityWithAccount(want, accountId, options);
} catch (err) {
  // Process input parameter errors.
  let code = (err as BusinessError).code;
  let message = (err as BusinessError).message;
  console.error(`connectServiceExtensionAbility failed, code is ${code}, message is ${message}`);
}

UIAbilityContext.disconnectServiceExtensionAbility

disconnectServiceExtensionAbility(connection: number): Promise<void>;

Disconnects this ability from a ServiceExtensionAbility and after the successful disconnection, sets the remote object returned upon the connection to void. This API uses a promise to return the result.

System capability: SystemCapability.Ability.AbilityRuntime.Core

Parameters

Name	Type	Mandatory	Description
connection	number	Yes	Digital code of the connected ServiceExtensionAbility, that is, connectionId returned by connectServiceExtensionAbility.

Return value

Type	Description
Promise<void>	Promise used to return the result.

Error codes

ID	Error Message
16000011	The context does not exist.
16000050	Internal error.

For details about the error codes, see Ability Error Codes.

Example

import { BusinessError } from '@ohos.base';

// connection is the return value of connectServiceExtensionAbility.
let connection = 1;
let commRemote: rpc.IRemoteObject|null;

try {
  this.context.disconnectServiceExtensionAbility(connection).then(() => {
    commRemote = null;
    // Carry out normal service processing.
    console.info('disconnectServiceExtensionAbility succeed');
  }).catch((err: BusinessError) => {
    // Process service logic errors.
    console.error(`disconnectServiceExtensionAbility failed, code is ${err.code}, message is ${err.message}`);
  })
} catch (err) {
  commRemote = null;
  // Process input parameter errors.
  let code = (err as BusinessError).code;
  let message = (err as BusinessError).message;
  console.error(`disconnectServiceExtensionAbility failed, code is ${code}, message is ${message}`);
}

UIAbilityContext.disconnectServiceExtensionAbility

disconnectServiceExtensionAbility(connection: number, callback:AsyncCallback<void>): void;

Disconnects this ability from a ServiceExtensionAbility and after the successful disconnection, sets the remote object returned upon the connection to void. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Ability.AbilityRuntime.Core

Parameters

Name	Type	Mandatory	Description
connection	number	Yes	Digital code of the connected ServiceExtensionAbility, that is, connectionId returned by connectServiceExtensionAbility.
callback	AsyncCallback<void>	Yes	Callback used to return the result.

Error codes

ID	Error Message
16000011	The context does not exist.
16000050	Internal error.

For details about the error codes, see Ability Error Codes.

Example

import { BusinessError } from '@ohos.base';

// connection is the return value of connectServiceExtensionAbility.
let connection = 1;
let commRemote: rpc.IRemoteObject|null;

try {
  this.context.disconnectServiceExtensionAbility(connection, (err: BusinessError) => {
    commRemote = null;
    if (err.code) {
      // Process service logic errors.
      console.error(`disconnectServiceExtensionAbility failed, code is ${err.code}, message is ${err.message}`);
      return;
    }
    // Carry out normal service processing.
    console.info('disconnectServiceExtensionAbility succeed');
  });
} catch (err) {
  commRemote = null;
  // Process input parameter errors.
  let code = (err as BusinessError).code;
  let message = (err as BusinessError).message;
  console.error(`disconnectServiceExtensionAbility failed, code is ${code}, message is ${message}`);
}

UIAbilityContext.startAbilityByCall

startAbilityByCall(want: Want): Promise<Caller>;

Starts an ability in the foreground or background and obtains the caller object for communicating with the ability.

Observe the following when using this API: - If an application running in the background needs to call this API to start an ability, it must have the ohos.permission.START_ABILITIES_FROM_BACKGROUND permission. - If exported of the target ability is false in cross-application scenarios, the caller must have the ohos.permission.START_INVISIBLE_ABILITY permission. - The rules for using this API in the same-device and cross-device scenarios are different. For details, see Component Startup Rules (Stage Model).

Required permissions: ohos.permission.ABILITY_BACKGROUND_COMMUNICATION

System capability: SystemCapability.Ability.AbilityRuntime.Core

Parameters

Name	Type	Mandatory	Description
want	Want	Yes	Information about the ability to start, including abilityName, moduleName, bundleName, deviceId (optional), and parameters (optional). If deviceId is left blank or null, the local ability is started. If parameters is left blank or null, the ability is started in the background.

Return value

Type	Description
Promise<Caller>	Promise used to return the caller object to communicate with.

Error codes

ID	Error Message
16000001	The specified ability does not exist.
16000002	Incorrect ability type.
16000004	Can not start invisible component.
16000005	The specified process does not have the permission.
16000006	Cross-user operations are not allowed.
16000008	The crowdtesting application expires.
16000011	The context does not exist.
16000012	The application is controlled.
16000013	The application is controlled by EDM.
16000050	Internal error.
16200001	The caller has been released.

For details about the error codes, see Ability Error Codes.

Example

Start an ability in the background.

import { Caller } from '@ohos.app.ability.UIAbility';
import Want from '@ohos.app.ability.Want';
import { BusinessError } from '@ohos.base';

let caller: Caller;

// Start an ability in the background by not passing parameters.
let wantBackground: Want = {
  bundleName: 'com.example.myapplication',
  moduleName: 'entry',
  abilityName: 'EntryAbility',
  deviceId: ''
};

try {
  this.context.startAbilityByCall(wantBackground)
    .then((obj: Caller) => {
      // Carry out normal service processing.
      caller = obj;
      console.info('startAbilityByCall succeed');
    }).catch((err: BusinessError) => {
    // Process service logic errors.
    console.error(`startAbilityByCall failed, code is ${err.code}, message is ${err.message}`);
  });
} catch (err) {
  // Process input parameter errors.
  let code = (err as BusinessError).code;
  let message = (err as BusinessError).message;
  console.error(`startAbilityByCall failed, code is ${code}, message is ${message}`);
}

Start an ability in the foreground.

import { Caller } from '@ohos.app.ability.UIAbility';
import Want from '@ohos.app.ability.Want';
import { BusinessError } from '@ohos.base';

let caller: Caller;

// Start an ability in the foreground with 'ohos.aafwk.param.callAbilityToForeground' in parameters set to true.
let wantForeground: Want = {
  bundleName: 'com.example.myapplication',
  moduleName: 'entry',
  abilityName: 'EntryAbility',
  deviceId: '',
  parameters: {
    'ohos.aafwk.param.callAbilityToForeground': true
  }
};

try {
  this.context.startAbilityByCall(wantForeground)
    .then((obj: Caller) => {
      // Carry out normal service processing.
      caller = obj;
      console.info('startAbilityByCall succeed');
    }).catch((err: BusinessError) => {
    // Process service logic errors.
    console.error(`startAbilityByCall failed, code is ${err.code}, message is ${err.message}`);
  });
} catch (err) {
  // Process input parameter errors.
  let code = (err as BusinessError).code;
  let message = (err as BusinessError).message;
  console.error(`startAbilityByCall failed, code is ${code}, message is ${message}`);
}

UIAbilityContext.startAbilityWithAccount

startAbilityWithAccount(want: Want, accountId: number, callback: AsyncCallback<void>): void;

Starts an ability with the account ID specified. This API uses an asynchronous callback to return the result.

Required permissions: ohos.permission.INTERACT_ACROSS_LOCAL_ACCOUNTS

System capability: SystemCapability.Ability.AbilityRuntime.Core

System API: This is a system API and cannot be called by third-party applications.

Parameters

Name	Type	Mandatory	Description
want	Want	Yes	Want information about the target ability.
accountId	number	Yes	ID of a system account. For details, see getCreatedOsAccountsCount.
callback	AsyncCallback<void>	Yes	Callback used to return the result.

Error codes

ID	Error Message
16000001	The specified ability does not exist.
16000002	Incorrect ability type.
16000004	Can not start invisible component.
16000005	The specified process does not have the permission.
16000006	Cross-user operations are not allowed.
16000008	The crowdtesting application expires.
16000009	An ability cannot be started or stopped in Wukong mode.
16000010	The call with the continuation flag is forbidden.
16000011	The context does not exist.
16000012	The application is controlled.
16000013	The application is controlled by EDM.
16000050	Internal error.
16000053	The ability is not on the top of the UI.
16000055	Installation-free timed out.
16200001	The caller has been released.

For details about the error codes, see Ability Error Codes.

Example

import Want from '@ohos.app.ability.Want';
import { BusinessError } from '@ohos.base';

let want: Want = {
  deviceId: '',
  bundleName: 'com.example.myapplication',
  abilityName: 'EntryAbility'
};
let accountId = 100;

try {
  this.context.startAbilityWithAccount(want, accountId, (err: BusinessError) => {
    if (err.code) {
      // Process service logic errors.
      console.error(`startAbilityWithAccount failed, code is ${err.code}, message is ${err.message}`);
      return;
    }
    // Carry out normal service processing.
    console.info('startAbilityWithAccount succeed');
  });
} catch (err) {
  // Process input parameter errors.
  let code = (err as BusinessError).code;
  let message = (err as BusinessError).message;
  console.error(`startAbilityWithAccount failed, code is ${code}, message is ${message}`);
}

UIAbilityContext.startAbilityWithAccount

startAbilityWithAccount(want: Want, accountId: number, options: StartOptions, callback: AsyncCallback<void>): void;

Starts an ability with the account ID and start options specified. This API uses an asynchronous callback to return the result.

Required permissions: ohos.permission.INTERACT_ACROSS_LOCAL_ACCOUNTS

System capability: SystemCapability.Ability.AbilityRuntime.Core

System API: This is a system API and cannot be called by third-party applications.

Parameters

Name	Type	Mandatory	Description
want	Want	Yes	Want information about the target ability.
accountId	number	Yes	ID of a system account. For details, see getCreatedOsAccountsCount.
options	StartOptions	Yes	Parameters used for starting the ability.
callback	AsyncCallback<void>	Yes	Callback used to return the result.

Error codes

ID	Error Message
16000001	The specified ability does not exist.
16000002	Incorrect ability type.
16000004	Can not start invisible component.
16000005	The specified process does not have the permission.
16000006	Cross-user operations are not allowed.
16000008	The crowdtesting application expires.
16000009	An ability cannot be started or stopped in Wukong mode.
16000010	The call with the continuation flag is forbidden.
16000011	The context does not exist.
16000012	The application is controlled.
16000013	The application is controlled by EDM.
16000050	Internal error.
16000053	The ability is not on the top of the UI.
16000055	Installation-free timed out.
16200001	The caller has been released.

For details about the error codes, see Ability Error Codes.

Example

import Want from '@ohos.app.ability.Want';
import StartOptions from '@ohos.app.ability.StartOptions';
import { BusinessError } from '@ohos.base';

let want: Want = {
  deviceId: '',
  bundleName: 'com.example.myapplication',
  abilityName: 'EntryAbility'
};
let accountId = 100;
let options: StartOptions = {
  windowMode: 0
};

try {
  this.context.startAbilityWithAccount(want, accountId, options, (err: BusinessError) => {
    if (err.code) {
      // Process service logic errors.
      console.error(`startAbilityWithAccount failed, code is ${err.code}, message is ${err.message}`);
      return;
    }
    // Carry out normal service processing.
    console.info('startAbilityWithAccount succeed');
  });
} catch (err) {
  // Process input parameter errors.
  let code = (err as BusinessError).code;
  let message = (err as BusinessError).message;
  console.error(`startAbilityWithAccount failed, code is ${code}, message is ${message}`);
}

UIAbilityContext.startAbilityWithAccount

startAbilityWithAccount(want: Want, accountId: number, options?: StartOptions): Promise<void>;

Starts an ability with the account ID specified. This API uses a promise to return the result.

Required permissions: ohos.permission.INTERACT_ACROSS_LOCAL_ACCOUNTS

System capability: SystemCapability.Ability.AbilityRuntime.Core

System API: This is a system API and cannot be called by third-party applications.

Parameters

Name	Type	Mandatory	Description
want	Want	Yes	Want information about the target ability.
accountId	number	Yes	ID of a system account. For details, see getCreatedOsAccountsCount.
options	StartOptions	No	Parameters used for starting the ability.

Error codes

ID	Error Message
16000001	The specified ability does not exist.
16000002	Incorrect ability type.
16000004	Can not start invisible component.
16000005	The specified process does not have the permission.
16000006	Cross-user operations are not allowed.
16000008	The crowdtesting application expires.
16000009	An ability cannot be started or stopped in Wukong mode.
16000010	The call with the continuation flag is forbidden.
16000011	The context does not exist.
16000012	The application is controlled.
16000013	The application is controlled by EDM.
16000050	Internal error.
16000053	The ability is not on the top of the UI.
16000055	Installation-free timed out.
16200001	The caller has been released.

For details about the error codes, see Ability Error Codes.

Example

import Want from '@ohos.app.ability.Want';
import StartOptions from '@ohos.app.ability.StartOptions';
import { BusinessError } from '@ohos.base';

let want: Want = {
  deviceId: '',
  bundleName: 'com.example.myapplication',
  abilityName: 'EntryAbility'
};
let accountId = 100;
let options: StartOptions = {
  windowMode: 0
};

try {
  this.context.startAbilityWithAccount(want, accountId, options)
    .then(() => {
      // Carry out normal service processing.
      console.info('startAbilityWithAccount succeed');
    })
    .catch((err: BusinessError) => {
      // Process service logic errors.
      console.error(`startAbilityWithAccount failed, code is ${err.code}, message is ${err.message}`);
    });
} catch (err) {
  // Process input parameter errors.
  let code = (err as BusinessError).code;
  let message = (err as BusinessError).message;
  console.error(`startAbilityWithAccount failed, code is ${code}, message is ${message}`);
}

UIAbilityContext.setMissionLabel

setMissionLabel(label: string, callback:AsyncCallback<void>): void;

Sets a label for this UIAbility in the mission. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Ability.AbilityRuntime.Core

Parameters

Name	Type	Mandatory	Description
label	string	Yes	Label of the ability to set.
callback	AsyncCallback<void>	Yes	Callback used to return the result.

Error codes

ID	Error Message
16000011	The context does not exist.
16000050	Internal error.

For details about the error codes, see Ability Error Codes.

Example

  import { BusinessError } from '@ohos.base';

  this.context.setMissionLabel('test', (result: BusinessError) => {
    console.info(`setMissionLabel: ${JSON.stringify(result)}`);
  });

UIAbilityContext.setMissionLabel

setMissionLabel(label: string): Promise<void>;

Sets a label for this UIAbility in the mission. This API uses a promise to return the result.

System capability: SystemCapability.Ability.AbilityRuntime.Core

Parameters

Name	Type	Mandatory	Description
label	string	Yes	Label of the ability to set.

Return value

Type	Description
Promise<void>	Promise used to return the result.

Error codes

ID	Error Message
16000011	The context does not exist.
16000050	Internal error.

For details about the error codes, see Ability Error Codes.

Example

  import { BusinessError } from '@ohos.base';

  this.context.setMissionLabel('test').then(() => {
    console.info('success');
  }).catch((err: BusinessError) => {
    let code = (err as BusinessError).code;
    let message = (err as BusinessError).message;
    console.error(`setMissionLabel failed, code is ${code}, message is ${message}`);
  });

UIAbilityContext.setMissionIcon

setMissionIcon(icon: image.PixelMap, callback:AsyncCallback<void>): void;

Sets an icon for this ability in the mission. This API uses an asynchronous callback to return the result. The maximum size of the icon is 600 MB.

System capability: SystemCapability.Ability.AbilityRuntime.Core

System API: This is a system API and cannot be called by third-party applications.

Parameters

Name	Type	Mandatory	Description
icon	image.PixelMap	Yes	Icon of the ability to set.
callback	AsyncCallback<void>	Yes	Callback used to return the result.

Error codes

ID	Error Message
16000011	The context does not exist.
16000050	Internal error.

For details about the error codes, see Ability Error Codes.

Example

  import UIAbility from '@ohos.app.ability.UIAbility';
  import { BusinessError } from '@ohos.base';
  import image from '@ohos.multimedia.image';
  
  export default class EntryAbility extends UIAbility {
    onForeground() {
      let imagePixelMap: image.PixelMap;
      let color = new ArrayBuffer(0);
      image.createPixelMap(color, {
        size: {
          height: 100,
          width: 100
        }
      }).then((data) => {
        imagePixelMap = data;
        this.context.setMissionIcon(imagePixelMap, (err: BusinessError) => {
          console.error(`setMissionLabel failed, code is ${err.code}, message is ${err.message}`);
        })
      })
        .catch((err: BusinessError) => {
          console.error(`createPixelMap failed, code is ${err.code}, message is ${err.message}`);
        });
    }
  }

UIAbilityContext.setMissionIcon

setMissionIcon(icon: image.PixelMap): Promise<void>;

Sets an icon for this ability in the mission. This API uses a promise to return the result. The maximum size of the icon is 600 MB.

System capability: SystemCapability.Ability.AbilityRuntime.Core

System API: This is a system API and cannot be called by third-party applications.

Parameters

Name	Type	Mandatory	Description
icon	image.PixelMap	Yes	Icon of the ability to set.

Return value

Type	Description
Promise<void>	Promise used to return the result.

Error codes

ID	Error Message
16000011	The context does not exist.
16000050	Internal error.

For details about the error codes, see Ability Error Codes.

Example

  import UIAbility from '@ohos.app.ability.UIAbility';
  import { BusinessError } from '@ohos.base';
  import image from '@ohos.multimedia.image';

  export default class EntryAbility extends UIAbility {
    onForeground() {
      let imagePixelMap: image.PixelMap;
      let color = new ArrayBuffer(0);
      image.createPixelMap(color, {
        size: {
          height: 100,
          width: 100
        }
      }).then((data) => {
          imagePixelMap = data;
          this.context.setMissionIcon(imagePixelMap)
            .then(() => {
              console.info('setMissionIcon succeed');
            })
            .catch((err: BusinessError) => {
              console.error(`setMissionLabel failed, code is ${err.code}, message is ${err.message}`);
            });
        })
        .catch((err: BusinessError) => {
          console.error(`createPixelMap failed, code is ${err.code}, message is ${err.message}`);
        });
    }
  }

UIAbilityContext.setMissionContinueState¹⁰⁺

setMissionContinueState(state: AbilityConstant.ContinueState, callback:AsyncCallback<void>): void;

Sets the mission continuation state of this UIAbility. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Ability.AbilityRuntime.Core

Parameters

Name	Type	Mandatory	Description
state	AbilityConstant.ContinueState	Yes	Mission continuation state.
callback	AsyncCallback<void>	Yes	Callback used to return the result.

Error codes

ID	Error Message
16000011	The context does not exist.
16000050	Internal error.

For details about the error codes, see Ability Error Codes.

Example

  import AbilityConstant from '@ohos.app.ability.AbilityConstant';
  import { BusinessError } from '@ohos.base';

  this.context.setMissionContinueState(AbilityConstant.ContinueState.INACTIVE, (result: BusinessError) => {
    console.info(`setMissionContinueState: ${JSON.stringify(result)}`);
  });

UIAbilityContext.setMissionContinueState¹⁰⁺

setMissionContinueState(state: AbilityConstant.ContinueState): Promise<void>;

Sets the mission continuation state of this UIAbility. This API uses a promise to return the result.

System capability: SystemCapability.Ability.AbilityRuntime.Core

Parameters

Name	Type	Mandatory	Description
state	AbilityConstant.ContinueState	Yes	Mission continuation state.

Return value

Type	Description
Promise<void>	Promise used to return the result.

Error codes

ID	Error Message
16000011	The context does not exist.
16000050	Internal error.

For details about the error codes, see Ability Error Codes.

Example

  import AbilityConstant from '@ohos.app.ability.AbilityConstant';
  import { BusinessError } from '@ohos.base';

  this.context.setMissionContinueState(AbilityConstant.ContinueState.INACTIVE).then(() => {
    console.info('success');
  }).catch((err: BusinessError) => {
    console.error(`setMissionContinueState failed, code is ${err.code}, message is ${err.message}`);
  });

UIAbilityContext.restoreWindowStage

restoreWindowStage(localStorage: LocalStorage) : void;

Restores the WindowStage data in the UIAbility.

System capability: SystemCapability.Ability.AbilityRuntime.Core

Parameters

Name	Type	Mandatory	Description
localStorage	LocalStorage	Yes	Storage used to store the restored window stage.

Error codes

ID	Error Message
16000011	The context does not exist.
16000050	Internal error.

For details about the error codes, see Ability Error Codes.

Example

  let storage = new LocalStorage();
  this.context.restoreWindowStage(storage);

UIAbilityContext.isTerminating

isTerminating(): boolean;

Checks whether this UIAbility is in the terminating state.

System capability: SystemCapability.Ability.AbilityRuntime.Core

Return value

Type	Description
boolean	The value true means that the UIAbility is in the terminating state, and false means the opposite.

Error codes

ID	Error Message
16000011	The context does not exist.

For details about the error codes, see Ability Error Codes.

Example

  let isTerminating: boolean = this.context.isTerminating();
  console.info(`ability state is ${isTerminating}`);

UIAbilityContext.requestDialogService

requestDialogService(want: Want, result: AsyncCallback<dialogRequest.RequestResult>): void;

Starts a ServiceExtensionAbility that supports modal dialog boxes. After the ServiceExtensionAbility is started, the application displays a modal dialog box. You can call setRequestResult to obtain the result.

System capability: SystemCapability.Ability.AbilityRuntime.Core

Parameters

Name	Type	Mandatory	Description
want	Want	Yes	Want information about the target ServiceExtensionAbility.
result	AsyncCallback<dialogRequest.RequestResult>	Yes	Callback used to return the result.

Error codes

ID	Error Message
16000001	The specified ability does not exist.
16000002	Incorrect ability type.
16000004	Can not start invisible component.
16000005	The specified process does not have the permission.
16000006	Cross-user operations are not allowed.
16000008	The crowdtesting application expires.
16000009	An ability cannot be started or stopped in Wukong mode.
16000010	The call with the continuation flag is forbidden.
16000011	The context does not exist.
16000012	The application is controlled.
16000013	The application is controlled by EDM.
16000050	Internal error.
16000053	The ability is not on the top of the UI.
16000055	Installation-free timed out.
16200001	The caller has been released.

For details about the error codes, see Ability Error Codes.

Example

import dialogRequest from '@ohos.app.ability.dialogRequest';
import Want from '@ohos.app.ability.Want';
import { BusinessError } from '@ohos.base';

let want: Want = {
  deviceId: '',
  bundleName: 'com.example.myapplication',
  abilityName: 'AuthAccountServiceExtension'
};

try {
  this.context.requestDialogService(want, (err: BusinessError, result: dialogRequest.RequestResult) => {
    if (err.code) {
      // Process service logic errors.
      console.error(`requestDialogService failed, code is ${err.code}, message is ${err.message}`);
      return;
    }
    // Carry out normal service processing.
    console.info(`requestDialogService succeed, result = ${JSON.stringify(result)}`);
  });
} catch (err) {
  // Process input parameter errors.
  let code = (err as BusinessError).code;
  let message = (err as BusinessError).message;
  console.error(`requestDialogService failed, code is ${code}, message is ${message}`);
}

## UIAbilityContext.requestDialogService

requestDialogService(want: Want): Promise<dialogRequest.RequestResult>;

System capability: SystemCapability.Ability.AbilityRuntime.Core

Parameters

Name	Type	Mandatory	Description
want	Want	Yes	Want information about the target ServiceExtensionAbility.

Return value

Type	Description
Promise<dialogRequest.RequestResult>	Promise used to return the result.

Error codes

ID	Error Message
16000001	The specified ability does not exist.
16000002	Incorrect ability type.
16000004	Can not start invisible component.
16000005	The specified process does not have the permission.
16000006	Cross-user operations are not allowed.
16000008	The crowdtesting application expires.
16000009	An ability cannot be started or stopped in Wukong mode.
16000010	The call with the continuation flag is forbidden.
16000011	The context does not exist.
16000012	The application is controlled.
16000013	The application is controlled by EDM.
16000050	Internal error.
16000053	The ability is not on the top of the UI.
16000055	Installation-free timed out.
16200001	The caller has been released.

For details about the error codes, see Ability Error Codes.

Example

import dialogRequest from '@ohos.app.ability.dialogRequest';
import Want from '@ohos.app.ability.Want';
import { BusinessError } from '@ohos.base';

let want: Want = {
  bundleName: 'com.example.myapplication',
  abilityName: 'AuthAccountServiceExtension'
};

try {
  this.context.requestDialogService(want)
    .then((result: dialogRequest.RequestResult) => {
      // Carry out normal service processing.
      console.info(`requestDialogService succeed, result = ${JSON.stringify(result)}`);
    })
    .catch((err: BusinessError) => {
      // Process service logic errors.
      console.error(`requestDialogService failed, code is ${err.code}, message is ${err.message}`);
    });
} catch (err) {
  // Process input parameter errors.
  let code = (err as BusinessError).code;
  let message = (err as BusinessError).message;
  console.error(`requestDialogService failed, code is ${code}, message is ${message}`);
}

## UIAbilityContext.startRecentAbility

startRecentAbility(want: Want, callback: AsyncCallback<void>): void;

Starts an ability. If the ability has multiple instances, the latest instance is started. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Ability.AbilityRuntime.Core

System API: This is a system API and cannot be called by third-party applications.

Parameters

Name	Type	Mandatory	Description
want	Want	Yes	Want information about the target ability.
callback	AsyncCallback<void>	Yes	Callback used to return the result.

Error codes

For details about the error codes, see Ability Error Codes.

ID	Error Message
16000001	The specified ability does not exist.
16000002	Incorrect ability type.
16000004	Can not start invisible component.
16000005	The specified process does not have the permission.
16000006	Cross-user operations are not allowed.
16000008	The crowdtesting application expires.
16000009	An ability cannot be started or stopped in Wukong mode.
16000010	The call with the continuation flag is forbidden.
16000011	The context does not exist.
16000012	The application is controlled.
16000013	The application is controlled by EDM.
16000050	Internal error.
16000053	The ability is not on the top of the UI.
16000055	Installation-free timed out.
16200001	The caller has been released.

Example

import Want from '@ohos.app.ability.Want';
import { BusinessError } from '@ohos.base';

let want: Want = {
  bundleName: 'com.example.myapplication',
  abilityName: 'EntryAbility'
};

try {
  this.context.startRecentAbility(want, (err: BusinessError) => {
    if (err.code) {
      // Process service logic errors.
      console.error(`startRecentAbility failed, code is ${err.code}, message is ${err.message}`);
      return;
    }
    // Carry out normal service processing.
    console.info('startRecentAbility succeed');
  });
} catch (err) {
  // Process input parameter errors.
  let code = (err as BusinessError).code;
  let message = (err as BusinessError).message;
  console.error(`startRecentAbility failed, code is ${code}, message is ${message}`);
}

UIAbilityContext.startRecentAbility

startRecentAbility(want: Want, options: StartOptions, callback: AsyncCallback<void>): void;

Starts an ability with the start options specified. If the ability has multiple instances, the latest instance is started. This API uses an asynchronous callback to return the result. You can use this API to carry start options.

System capability: SystemCapability.Ability.AbilityRuntime.Core

System API: This is a system API and cannot be called by third-party applications.

Parameters

Name	Type	Mandatory	Description
want	Want	Yes	Want information about the target ability.
options	StartOptions	Yes	Parameters used for starting the ability.
callback	AsyncCallback<void>	Yes	Callback used to return the result.

Error codes

For details about the error codes, see Ability Error Codes.

ID	Error Message
16000001	The specified ability does not exist.
16000002	Incorrect ability type.
16000004	Can not start invisible component.
16000005	The specified process does not have the permission.
16000006	Cross-user operations are not allowed.
16000008	The crowdtesting application expires.
16000009	An ability cannot be started or stopped in Wukong mode.
16000010	The call with the continuation flag is forbidden.
16000011	The context does not exist.
16000012	The application is controlled.
16000013	The application is controlled by EDM.
16000050	Internal error.
16000053	The ability is not on the top of the UI.
16000055	Installation-free timed out.
16200001	The caller has been released.

Example

import Want from '@ohos.app.ability.Want';
import StartOptions from '@ohos.app.ability.StartOptions';
import { BusinessError } from '@ohos.base';

let want: Want = {
  deviceId: '',
  bundleName: 'com.example.myapplication',
  abilityName: 'EntryAbility'
};
let options: StartOptions = {
  windowMode: 0
};

try {
  this.context.startRecentAbility(want, options, (err: BusinessError) => {
    if (err.code) {
      // Process service logic errors.
      console.error(`startRecentAbility failed, code is ${err.code}, message is ${err.message}`);
      return;
    }
    // Carry out normal service processing.
    console.info('startRecentAbility succeed');
  });
} catch (err) {
  // Process input parameter errors.
  let code = (err as BusinessError).code;
  let message = (err as BusinessError).message;
  console.error(`startRecentAbility failed, code is ${code}, message is ${message}`);
}

UIAbilityContext.startRecentAbility

startRecentAbility(want: Want, options?: StartOptions): Promise<void>;

Starts an ability. If the ability has multiple instances, the latest instance is started. This API uses a promise to return the result.

System capability: SystemCapability.Ability.AbilityRuntime.Core

System API: This is a system API and cannot be called by third-party applications.

Parameters

Name	Type	Mandatory	Description
want	Want	Yes	Want information about the target ability.
options	StartOptions	No	Parameters used for starting the ability.

Error codes

For details about the error codes, see Ability Error Codes.

ID	Error Message
16000001	The specified ability does not exist.
16000002	Incorrect ability type.
16000004	Can not start invisible component.
16000005	The specified process does not have the permission.
16000006	Cross-user operations are not allowed.
16000008	The crowdtesting application expires.
16000009	An ability cannot be started or stopped in Wukong mode.
16000010	The call with the continuation flag is forbidden.
16000011	The context does not exist.
16000012	The application is controlled.
16000013	The application is controlled by EDM.
16000050	Internal error.
16000053	The ability is not on the top of the UI.
16000055	Installation-free timed out.
16200001	The caller has been released.

Example

import Want from '@ohos.app.ability.Want';
import StartOptions from '@ohos.app.ability.StartOptions';
import { BusinessError } from '@ohos.base';

let want: Want = {
  bundleName: 'com.example.myapplication',
  abilityName: 'EntryAbility'
};
let options: StartOptions = {
  windowMode: 0,
};

try {
  this.context.startRecentAbility(want, options)
    .then(() => {
      // Carry out normal service processing.
      console.info('startRecentAbility succeed');
    })
    .catch((err: BusinessError) => {
      // Process service logic errors.
      console.error(`startRecentAbility failed, code is ${err.code}, message is ${err.message}`);
    });
} catch (err) {
  // Process input parameter errors.
  let code = (err as BusinessError).code;
  let message = (err as BusinessError).message;
  console.error(`startRecentAbility failed, code is ${code}, message is ${message}`);
}

UIAbilityContext.startAbilityByCallWithAccount¹⁰⁺

startAbilityByCallWithAccount(want: Want, accountId: number): Promise<Caller>;

Starts an ability with the account ID specified and obtains the caller object for communicating with the ability.

Observe the following when using this API: - If an application needs to call this API to start an ability that belongs to another user, it must have the ohos.permission.ABILITY_BACKGROUND_COMMUNICATION and ohos.permission.INTERACT_ACROSS_LOCAL_ACCOUNTS permissions. - If an application running in the background needs to call this API to start an ability, it must have the ohos.permission.START_ABILITIES_FROM_BACKGROUND permission. - If exported of the target ability is false in cross-application scenarios, the caller must have the ohos.permission.START_INVISIBLE_ABILITY permission. - The rules for using this API in the same-device and cross-device scenarios are different. For details, see Component Startup Rules (Stage Model).

Required permissions: ohos.permission.ABILITY_BACKGROUND_COMMUNICATION and ohos.permission.INTERACT_ACROSS_LOCAL_ACCOUNTS

System capability: SystemCapability.Ability.AbilityRuntime.Core

System API: This is a system API and cannot be called by third-party applications.

Parameters

Name	Type	Mandatory	Description
want	Want	Yes	Information about the ability to start, including abilityName, moduleName, bundleName, deviceId (optional), and parameters (optional). If deviceId is left blank or null, the local ability is started. If parameters is left blank or null, the ability is started in the background.
accountId	number	Yes	ID of a system account. The value -1 indicates the current user. For details, see getCreatedOsAccountsCount.

Return value

Type	Description
Promise<Caller>	Promise used to return the caller object to communicate with.

Error codes

ID	Error Message
16000001	The specified ability does not exist.
16000002	Incorrect ability type.
16000004	Can not start invisible component.
16000005	Static permission denied. The specified process does not have the permission.
16000006	Cross-user operations are not allowed.
16000008	The crowdtesting application expires.
16000011	The context does not exist.
16000012	The application is controlled.
16000013	The application is controlled by EDM.
16000050	Internal error.
16200001	The caller has been released.

For details about the error codes, see Ability Error Codes.

Example

  import { Caller } from '@ohos.app.ability.UIAbility';
  import Want from '@ohos.app.ability.Want';
  import { BusinessError } from '@ohos.base';

  let caller: Caller;

  // ID of a system account. The value -1 indicates the current user.
  let accountId = -1;

  // Specify the ability to start.
  let want: Want = {
      bundleName: 'com.acts.actscalleeabilityrely',
      moduleName: 'entry',
      abilityName: 'EntryAbility',
      deviceId: '',
      parameters: {
        // If the value of 'ohos.aafwk.param.callAbilityToForeground' is true, the ability is started in the foreground. If the value is false or not set, the ability is started in the background.
        'ohos.aafwk.param.callAbilityToForeground': true
      }
  };

  try {
    this.context.startAbilityByCallWithAccount(want, accountId)
      .then((obj: Caller) => {
        // Carry out normal service processing.
        caller = obj;
        console.log('startAbilityByCallWithAccount succeed');
      }).catch((error: BusinessError) => {
        // Process service logic errors.
        console.error('startAbilityByCallWithAccount failed, error.code: ${error.code}, error.message: ${error.message}');
      });
  } catch (paramError) {
    // Process input parameter errors.
    console.error('error.code: ${paramError.code}, error.message: ${paramError.message}');
  }

UIAbilityContext.startAbilityAsCaller¹⁰⁺

startAbilityAsCaller(want: Want, callback: AsyncCallback<void>): void;

Starts an ability with the caller information specified. The caller information is carried in want and identified at the system service layer. The ability can obtain the caller information from the want parameter in the onCreate lifecycle callback. When this API is used to start an ability, the caller information carried in want is not overwritten by the current application information. The system service layer can obtain the initial caller information. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Ability.AbilityRuntime.Core

System API: This is a system API and cannot be called by third-party applications.

Parameters

Name	Type	Mandatory	Description
want	Want	Yes	Want information about the target ability.
callback	AsyncCallback<void>	Yes	Callback used to return the result. If the ability is started, err is undefined. Otherwise, err is an error object.

Error codes

ID	Error Message
16000001	The specified ability does not exist.
16000002	Incorrect ability type.
16000004	Can not start invisible component.
16000005	The specified process does not have the permission.
16000006	Cross-user operations are not allowed.
16000008	The crowdtesting application expires.
16000009	An ability cannot be started or stopped in Wukong mode.
16000010	The call with the continuation flag is forbidden.
16000011	The context does not exist.
16000012	The application is controlled.
16000013	The application is controlled by EDM.
16000050	Internal error.
16000053	The ability is not on the top of the UI.
16000055	Installation-free timed out.
16200001	The caller has been released.

For details about the error codes, see Ability Error Codes.

Example

import UIAbility from '@ohos.app.ability.UIAbility';
import AbilityConstant from '@ohos.app.ability.AbilityConstant';
import Want from '@ohos.app.ability.Want';

export default class EntryAbility extends UIAbility {
  onCreate(want: Want, launchParam: AbilityConstant.LaunchParam) {
    // want contains the information about the caller who starts the application.
    let localWant: Want = want;
    localWant.bundleName = 'com.example.demo';
    localWant.moduleName = 'entry';
    localWant.abilityName = 'TestAbility';

    // Start a new ability using the caller information.
    this.context.startAbilityAsCaller(localWant, (err) => {
      if (err && err.code != 0) {
        console.error('startAbilityAsCaller failed, err:' + JSON.stringify(err));
      } else {
        console.log('startAbilityAsCaller success.');
      }
    })
  }
}

UIAbilityContext.startAbilityAsCaller¹⁰⁺

startAbilityAsCaller(want: Want, options: StartOptions, callback: AsyncCallback<void>): void;

Starts an ability with the caller information and start options specified. The caller information is carried in want and identified at the system service layer. The ability can obtain the caller information from the want parameter in the onCreate lifecycle callback. When this API is used to start an ability, the caller information carried in want is not overwritten by the current application information. The system service layer can obtain the initial caller information. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Ability.AbilityRuntime.Core

System API: This is a system API and cannot be called by third-party applications.

Parameters

Name	Type	Mandatory	Description
want	Want	Yes	Want information about the target ability.
options	StartOptions	Yes	Parameters used for starting the ability.
callback	AsyncCallback<void>	Yes	Callback used to return the result. If the ability is started, err is undefined. Otherwise, err is an error object.

Error codes

ID	Error Message
16000001	The specified ability does not exist.
16000004	Can not start invisible component.
16000005	The specified process does not have the permission.
16000006	Cross-user operations are not allowed.
16000008	The crowdtesting application expires.
16000009	An ability cannot be started or stopped in Wukong mode.
16000011	The context does not exist.
16000012	The application is controlled.
16000013	The application is controlled by EDM.
16000050	Internal error.
16000053	The ability is not on the top of the UI.
16000055	Installation-free timed out.
16200001	The caller has been released.

For details about the error codes, see Ability Error Codes.

Example

import UIAbility from '@ohos.app.ability.UIAbility';
import AbilityConstant from '@ohos.app.ability.AbilityConstant';
import StartOptions from '@ohos.app.ability.StartOptions';
import Want from '@ohos.app.ability.Want';

export default class EntryAbility extends UIAbility {
  onCreate(want: Want, launchParam: AbilityConstant.LaunchParam) {
    // want contains the information about the caller who starts the application.
    let localWant: Want = want;
    localWant.bundleName = 'com.example.demo';
    localWant.moduleName = 'entry';
    localWant.abilityName = 'TestAbility';

    let option: StartOptions = {
      displayId: 0
    }

    // Start a new ability using the caller information.
    this.context.startAbilityAsCaller(localWant, option, (err) => {
      if (err && err.code != 0) {
        console.error('startAbilityAsCaller failed, err:' + JSON.stringify(err));
      } else {
        console.log('startAbilityAsCaller success.');
      }
    })
  }
}

UIAbilityContext.startAbilityAsCaller¹⁰⁺

startAbilityAsCaller(want: Want, options?: StartOptions): Promise<void>;

System capability: SystemCapability.Ability.AbilityRuntime.Core

System API: This is a system API and cannot be called by third-party applications.

Parameters

Name	Type	Mandatory	Description
want	Want	Yes	Want information about the target ability.
options	StartOptions	No	Parameters used for starting the ability.

Return value

Type	Description
Promise<void>	Promise that returns no value.

Error codes

ID	Error Message
16000001	The specified ability does not exist.
16000002	Incorrect ability type.
16000004	Can not start invisible component.
16000005	The specified process does not have the permission.
16000006	Cross-user operations are not allowed.
16000008	The crowdtesting application expires.
16000009	An ability cannot be started or stopped in Wukong mode.
16000010	The call with the continuation flag is forbidden.
16000011	The context does not exist.
16000012	The application is controlled.
16000013	The application is controlled by EDM.
16000050	Internal error.
16000053	The ability is not on the top of the UI.
16000055	Installation-free timed out.
16200001	The caller has been released.

For details about the error codes, see Ability Error Codes.

Example

import UIAbility from '@ohos.app.ability.UIAbility';
import AbilityConstant from '@ohos.app.ability.AbilityConstant';
import StartOptions from '@ohos.app.ability.StartOptions';
import Want from '@ohos.app.ability.Want';
import { BusinessError } from '@ohos.base';

export default class EntryAbility extends UIAbility {
  onCreate(want: Want, launchParam: AbilityConstant.LaunchParam) {
    // want contains the information about the caller who starts the application.
    let localWant: Want = want;
    localWant.bundleName = 'com.example.demo';
    localWant.moduleName = 'entry';
    localWant.abilityName = 'TestAbility';

    let option: StartOptions = {
      displayId: 0
    }

    // Start a new ability using the caller information.
    this.context.startAbilityAsCaller(localWant, option)
      .then(() => {
        console.log('startAbilityAsCaller success.');
      })
      .catch((err: BusinessError) => {
        console.error('startAbilityAsCaller failed, err:' + JSON.stringify(err));
      })
  }
}

UIAbilityContext.reportDrawnCompleted¹⁰⁺

reportDrawnCompleted(callback: AsyncCallback<void>): void;

Reports an event indicating that page loading is complete (loadContent() is successfully called). This API uses an asynchronous callback to return the result. System capability: SystemCapability.Ability.AbilityRuntime.Core

Parameters

Name	Type	Mandatory	Description
callback	AsyncCallback<void>	Yes	Callback used to report that page loading is complete.

Error codes

ID	Error Message
16000011	The context does not exist.
16000050	Internal error.

For details about the error codes, see Ability Error Codes.

Example

import UIAbility from '@ohos.app.ability.UIAbility';
import window from '@ohos.window';
import { BusinessError } from '@ohos.base';

export default class EntryAbility extends UIAbility {
  onWindowStageCreate(windowStage: window.WindowStage) {
    windowStage.loadContent('pages/Index', (err, data) => {
      if (err.code) {
        return;
      }
      try {
        this.context.reportDrawnCompleted((err) => {
          if (err.code) {
            // Process service logic errors.
            console.error(`reportDrawnCompleted failed, code is ${err.code}, message is ${err.message}`);
            return;
          }
          // Carry out normal service processing.
          console.info('reportDrawnCompleted succeed');
        });
      } catch (err) {
        // Capture the synchronization parameter error.
        let code = (err as BusinessError).code;
        let message = (err as BusinessError).message;
        console.error(`reportDrawnCompleted failed, code is ${code}, message is ${message}`);
      }
    });
    console.log("MainAbility onWindowStageCreate")
  }
};

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harmony 鸿蒙UIAbilityContext

UIAbilityContext

Modules to Import

Attributes

UIAbilityContext.startAbility

UIAbilityContext.startAbility

UIAbilityContext.startAbility

UIAbilityContext.startAbilityForResult

UIAbilityContext.startAbilityForResult

UIAbilityContext.startAbilityForResult

UIAbilityContext.startAbilityForResultWithAccount

UIAbilityContext.startAbilityForResultWithAccount

UIAbilityContext.startAbilityForResultWithAccount

UIAbilityContext.startServiceExtensionAbility

UIAbilityContext.startServiceExtensionAbility

UIAbilityContext.startServiceExtensionAbilityWithAccount

UIAbilityContext.startServiceExtensionAbilityWithAccount

UIAbilityContext.stopServiceExtensionAbility

UIAbilityContext.stopServiceExtensionAbility

UIAbilityContext.stopServiceExtensionAbilityWithAccount

UIAbilityContext.stopServiceExtensionAbilityWithAccount

UIAbilityContext.terminateSelf

UIAbilityContext.terminateSelf

UIAbilityContext.terminateSelfWithResult

UIAbilityContext.terminateSelfWithResult

UIAbilityContext.connectServiceExtensionAbility

UIAbilityContext.connectServiceExtensionAbilityWithAccount

UIAbilityContext.disconnectServiceExtensionAbility

UIAbilityContext.disconnectServiceExtensionAbility

UIAbilityContext.startAbilityByCall

UIAbilityContext.startAbilityWithAccount

UIAbilityContext.startAbilityWithAccount

UIAbilityContext.startAbilityWithAccount

UIAbilityContext.setMissionLabel

UIAbilityContext.setMissionLabel

UIAbilityContext.setMissionIcon

UIAbilityContext.setMissionIcon

UIAbilityContext.setMissionContinueState10+

UIAbilityContext.setMissionContinueState10+

UIAbilityContext.restoreWindowStage

UIAbilityContext.isTerminating

UIAbilityContext.requestDialogService

UIAbilityContext.startRecentAbility

UIAbilityContext.startRecentAbility

UIAbilityContext.startAbilityByCallWithAccount10+

UIAbilityContext.startAbilityAsCaller10+

UIAbilityContext.startAbilityAsCaller10+

UIAbilityContext.startAbilityAsCaller10+

UIAbilityContext.reportDrawnCompleted10+

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本文目录

UIAbilityContext.setMissionContinueState¹⁰⁺

UIAbilityContext.setMissionContinueState¹⁰⁺

UIAbilityContext.startAbilityByCallWithAccount¹⁰⁺

UIAbilityContext.startAbilityAsCaller¹⁰⁺

UIAbilityContext.startAbilityAsCaller¹⁰⁺

UIAbilityContext.startAbilityAsCaller¹⁰⁺

UIAbilityContext.reportDrawnCompleted¹⁰⁺