harmony 鸿蒙@ohos.continuation.continuationManager (continuationManager)

2022-08-09
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@ohos.continuation.continuationManager (continuationManager)

The continuationManager module provides the continuation management entry. You can use the APIs of this module to connect to and cancel the continuation management service, subscribe to and unsubscribe from device connection events, start the device selection module, and update the device connection state.

Currently, this module provides incomplete functions, and its APIs are mainly used to start the device selection module. The continuation capability is not available for application development.

NOTE

The initial APIs of this module are supported since API version 8. Newly added APIs will be marked with a superscript to indicate their earliest API version.

Modules to Import

import continuationManager from '@ohos.continuation.continuationManager'

continuationManager.register^(deprecated)

Registers the continuation management service and obtains a token. This API does not involve any filter parameters and uses an asynchronous callback to return the result.

This API is deprecated since API version 9. You are advised to use registerContinuation instead.

System capability: SystemCapability.Ability.DistributedAbilityManager

Parameters

Name	Type	Mandatory	Description
callback	AsyncCallback<number>	Yes	Callback used to return the token generated after the continuation management service is connected.

Example

  import continuationManager from '@ohos.continuation.continuationManager'
  let token: number = -1;
  continuationManager.register((err, data) => {
    if (err.code != 0) {
      console.error('register failed, cause: ' + JSON.stringify(err));
      return;
    }
    console.info('register finished, ' + JSON.stringify(data));
    token = data;
  });

continuationManager.register^(deprecated)

Registers the continuation management service and obtains a token. This API uses an asynchronous callback to return the result.

This API is deprecated since API version 9. You are advised to use registerContinuation instead.

System capability: SystemCapability.Ability.DistributedAbilityManager

Parameters

Name	Type	Mandatory	Description
options	ContinuationExtraParams	Yes	Extra parameters used to filter the list of available devices.
callback	AsyncCallback<number>	Yes	Callback used to return the token generated after the continuation management service is connected.

Example

  import continuationManager from '@ohos.continuation.continuationManager'
  let token: number = -1;
  continuationManager.register(
    {
      deviceType: ["00E"]
    },
    (err, data) => {
      if (err.code != 0) {
        console.error('register failed, cause: ' + JSON.stringify(err));
        return;
      }
      console.info('register finished, ' + JSON.stringify(data));
      token = data;
  });

continuationManager.register^(deprecated)

Registers the continuation management service and obtains a token. This API uses a promise to return the result.

This API is deprecated since API version 9. You are advised to use registerContinuation instead.

System capability: SystemCapability.Ability.DistributedAbilityManager

Parameters

Name	Type	Mandatory	Description
options	ContinuationExtraParams	No	Extra parameters used to filter the list of available devices. This parameter can be null.

Return value

Type	Description
Promise<number>	Promise used to return the token generated after the continuation management service is connected.

Example

  import continuationManager from '@ohos.continuation.continuationManager'
  import { BusinessError } from '@ohos.base';
  let token: number = -1;
  continuationManager.register(
    { deviceType: ["00E"] }).then((data) => {
      console.info('register finished, ' + JSON.stringify(data));
      token = data;
    }).catch((err: BusinessError) => {
      console.error('register failed, cause: ' + JSON.stringify(err));
  });

continuationManager.registerContinuation⁹⁺

registerContinuation(callback: AsyncCallback<number>): void;

Registers the continuation management service and obtains a token. This API does not involve any filter parameters and uses an asynchronous callback to return the result.

Required permissions: ohos.permission.DISTRIBUTED_DATASYNC

System capability: SystemCapability.Ability.DistributedAbilityManager

Parameters

Name	Type	Mandatory	Description
callback	AsyncCallback<number>	Yes	Callback used to return the token generated after the continuation management service is connected.

Error codes

For details about the error codes, see Distributed Scheduler Error Codes.

ID	Error Message
16600001	The system ability works abnormally.
16600003	The number of token registration times has reached the upper limit.

Example

  import continuationManager from '@ohos.continuation.continuationManager'
  let token: number = -1;
  try {
    continuationManager.registerContinuation((err, data) => {
      if (err.code != 0) {
        console.error('registerContinuation failed, cause: ' + JSON.stringify(err));
        return;
      }
      console.info('registerContinuation finished, ' + JSON.stringify(data));
      token = data;
    });
  } catch (err) {
    console.error('registerContinuation failed, cause: ' + JSON.stringify(err));
  }

continuationManager.registerContinuation⁹⁺

registerContinuation(options: ContinuationExtraParams, callback: AsyncCallback<number>): void;

Registers the continuation management service and obtains a token. This API uses an asynchronous callback to return the result.

Required permissions: ohos.permission.DISTRIBUTED_DATASYNC

System capability: SystemCapability.Ability.DistributedAbilityManager

Parameters

Name	Type	Mandatory	Description
options	ContinuationExtraParams	Yes	Extra parameters used to filter the list of available devices.
callback	AsyncCallback<number>	Yes	Callback used to return the token generated after the continuation management service is connected.

Error codes

For details about the error codes, see Distributed Scheduler Error Codes.

ID	Error Message
16600001	The system ability works abnormally.
16600003	The number of token registration times has reached the upper limit.

Example

  import continuationManager from '@ohos.continuation.continuationManager';
  let token: number = -1;
  try {
    continuationManager.registerContinuation(
      {
        deviceType: ["00E"]
      },
      (err, data) => {
        if (err.code != 0) {
          console.error('registerContinuation failed, cause: ' + JSON.stringify(err));
          return;
        }
        console.info('registerContinuation finished, ' + JSON.stringify(data));
        token = data;
    });
  } catch (err) {
    console.error('registerContinuation failed, cause: ' + JSON.stringify(err));
  }

continuationManager.registerContinuation⁹⁺

registerContinuation(options?: ContinuationExtraParams): Promise<number>;

Registers the continuation management service and obtains a token. This API uses a promise to return the result.

Required permissions: ohos.permission.DISTRIBUTED_DATASYNC

System capability: SystemCapability.Ability.DistributedAbilityManager

Parameters

Name	Type	Mandatory	Description
options	ContinuationExtraParams	No	Extra parameters used to filter the list of available devices. This parameter can be null.

Return value

Type	Description
Promise<number>	Promise used to return the token generated after the continuation management service is connected.

Error codes

For details about the error codes, see Distributed Scheduler Error Codes.

ID	Error Message
16600001	The system ability works abnormally.
16600003	The number of token registration times has reached the upper limit.

Example

  import continuationManager from '@ohos.continuation.continuationManager';
  import { BusinessError } from '@ohos.base';
  let token: number = -1;
  try {
    continuationManager.register(
      {
        deviceType: ["00E"]
      }).then((data) => {
        console.info('registerContinuation finished, ' + JSON.stringify(data));
        token = data;
      }).catch((err: BusinessError) => {
        console.error('registerContinuation failed, cause: ' + JSON.stringify(err));
    });
  } catch (err) {
    console.error('registerContinuation failed, cause: ' + JSON.stringify(err));
  }

continuationManager.on(“deviceConnect”)^(deprecated)

on(type: “deviceConnect”, callback: Callback<ContinuationResult>): void;

Subscribes to device connection events. This API uses an asynchronous callback to return the result.

This API is deprecated since API version 9. You are advised to use on instead.

System capability: SystemCapability.Ability.DistributedAbilityManager

Parameters

Name	Type	Mandatory	Description
type	string	Yes	Event type. The value is fixed at deviceConnect.
callback	Callback<ContinuationResult>	Yes	Callback invoked when a device is selected from the device list provided by the device selection module. This callback returns the device ID, type, and name.

Example

  import continuationManager from '@ohos.continuation.continuationManager';
  continuationManager.on("deviceConnect", (data) => {
    console.info('onDeviceConnect deviceId: ' + JSON.stringify(data.id));
    console.info('onDeviceConnect deviceType: ' + JSON.stringify(data.type));
    console.info('onDeviceConnect deviceName: ' + JSON.stringify(data.name));
  });

continuationManager.on(“deviceDisconnect”)^(deprecated)

on(type: “deviceDisconnect”, callback: Callback<string>): void;

Subscribes to device disconnection events. This API uses an asynchronous callback to return the result.

This API is deprecated since API version 9. You are advised to use on instead.

System capability: SystemCapability.Ability.DistributedAbilityManager

Parameters

Name	Type	Mandatory	Description
type	string	Yes	Event type. The value is fixed at deviceDisconnect.
callback	Callback<string>	Yes	Callback invoked when a device is unselected from the device list provided by the device selection module. This callback returns the device ID.

Example

  import continuationManager from '@ohos.continuation.continuationManager';
  continuationManager.on("deviceDisconnect", (data) => {
    console.info('onDeviceDisconnect deviceId: ' + JSON.stringify(data));
  });

continuationManager.off(“deviceConnect”)^(deprecated)

off(type: “deviceConnect”, callback?: Callback<ContinuationResult>): void;

Unsubscribes from device connection events. This API uses an asynchronous callback to return the result.

This API is deprecated since API version 9. You are advised to use off instead.

System capability: SystemCapability.Ability.DistributedAbilityManager

Parameters

Name	Type	Mandatory	Description
type	string	Yes	Event type. The value is fixed at deviceConnect.
callback	Callback<ContinuationResult>	No	Callback invoked when a device is selected from the device list provided by the device selection module. This callback returns the device ID, type, and name.

Example

  import continuationManager from '@ohos.continuation.continuationManager';
  continuationManager.off("deviceConnect", (data) => {
    console.info('onDeviceConnect deviceId: ' + JSON.stringify(data.id));
    console.info('onDeviceConnect deviceType: ' + JSON.stringify(data.type));
    console.info('onDeviceConnect deviceName: ' + JSON.stringify(data.name));
  });

continuationManager.off(“deviceDisconnect”)^(deprecated)

off(type: “deviceDisconnect”, callback?: Callback<string>): void;

Unsubscribes from device disconnection events. This API uses an asynchronous callback to return the result.

This API is deprecated since API version 9. You are advised to use off instead.

System capability: SystemCapability.Ability.DistributedAbilityManager

Parameters

Name	Type	Mandatory	Description
type	string	Yes	Event type. The value is fixed at deviceDisconnect.
callback	Callback<string>	No	Callback invoked when a device is unselected from the device list provided by the device selection module. This callback returns the device ID.

Example

  import continuationManager from '@ohos.continuation.continuationManager';
  continuationManager.off("deviceDisconnect", (data) => {
    console.info('onDeviceDisconnect deviceId: ' + JSON.stringify(data));
  });

continuationManager.on(“deviceSelected”)⁹⁺

on(type: “deviceSelected”, token: number, callback: Callback<Array<ContinuationResult>>): void;

Subscribes to device connection events. This API uses an asynchronous callback to return the result.

Required permissions: ohos.permission.DISTRIBUTED_DATASYNC

System capability: SystemCapability.Ability.DistributedAbilityManager

Parameters

Name	Type	Mandatory	Description
type	string	Yes	Event type. The value is fixed at deviceSelected.
token	number	Yes	Token obtained after the registration of the continuation management service.
callback	Callback<Array<ContinuationResult>>	Yes	Callback invoked when a device is selected from the device list provided by the device selection module. This callback returns the device ID, type, and name.

Error codes

For details about the error codes, see Distributed Scheduler Error Codes.

ID	Error Message
16600001	The system ability works abnormally.
16600002	The specified token or callback is not registered.
16600004	The specified callback has been registered.

Example

  import continuationManager from '@ohos.continuation.continuationManager';
  let token: number = 1;
  try {
    continuationManager.on("deviceSelected", token, (data) => {
      console.info('onDeviceSelected len: ' + data.length);
      for (let i = 0; i < data.length; i++) {
        console.info('onDeviceSelected deviceId: ' + JSON.stringify(data[i].id));
        console.info('onDeviceSelected deviceType: ' + JSON.stringify(data[i].type));
        console.info('onDeviceSelected deviceName: ' + JSON.stringify(data[i].name));
      }
    });
  } catch (err) {
    console.error('on failed, cause: ' + JSON.stringify(err));
  }

continuationManager.on(“deviceUnselected”)⁹⁺

on(type: “deviceUnselected”, token: number, callback: Callback<Array<ContinuationResult>>): void;

Subscribes to device disconnection events. This API uses an asynchronous callback to return the result.

Required permissions: ohos.permission.DISTRIBUTED_DATASYNC

System capability: SystemCapability.Ability.DistributedAbilityManager

Parameters

Name	Type	Mandatory	Description
type	string	Yes	Event type. The value is fixed at deviceUnselected.
token	number	Yes	Token obtained after the registration of the continuation management service.
callback	Callback<Array<ContinuationResult>>	Yes	Callback invoked when a device is unselected from the device list provided by the device selection module. This callback returns the device ID, type, and name.

Error codes

For details about the error codes, see Distributed Scheduler Error Codes.

ID	Error Message
16600001	The system ability works abnormally.
16600002	The specified token or callback is not registered.
16600004	The specified callback has been registered.

Example

  import continuationManager from '@ohos.continuation.continuationManager';
  let token: number = 1;
  try {
    continuationManager.on("deviceUnselected", token, (data) => {
      console.info('onDeviceUnselected len: ' + data.length);
      for (let i = 0; i < data.length; i++) {
        console.info('onDeviceUnselected deviceId: ' + JSON.stringify(data[i].id));
        console.info('onDeviceUnselected deviceType: ' + JSON.stringify(data[i].type));
        console.info('onDeviceUnselected deviceName: ' + JSON.stringify(data[i].name));
      }
      console.info('onDeviceUnselected finished.');
    });
  } catch (err) {
    console.error('on failed, cause: ' + JSON.stringify(err));
  }

continuationManager.off(“deviceSelected”)⁹⁺

off(type: “deviceSelected”, token: number): void;

Unsubscribes from device connection events.

Required permissions: ohos.permission.DISTRIBUTED_DATASYNC

System capability: SystemCapability.Ability.DistributedAbilityManager

Parameters

Name	Type	Mandatory	Description
type	string	Yes	Event type. The value is fixed at deviceSelected.
token	number	Yes	Token obtained after the registration of the continuation management service.

Error codes

For details about the error codes, see Distributed Scheduler Error Codes.

ID	Error Message
16600001	The system ability works abnormally.
16600002	The specified token or callback is not registered.
16600004	The specified callback has been registered.

Example

  import continuationManager from '@ohos.continuation.continuationManager';
  let token: number = 1;
  try {
    continuationManager.off("deviceSelected", token);
  } catch (err) {
    console.error('off failed, cause: ' + JSON.stringify(err));
  }

continuationManager.off(“deviceUnselected”)⁹⁺

off(type: “deviceUnselected”, token: number): void;

Unsubscribes from device disconnection events.

Required permissions: ohos.permission.DISTRIBUTED_DATASYNC

System capability: SystemCapability.Ability.DistributedAbilityManager

Parameters

Name	Type	Mandatory	Description
type	string	Yes	Event type. The value is fixed at deviceUnselected.
token	number	Yes	Token obtained after the registration of the continuation management service.

Error codes

For details about the error codes, see Distributed Scheduler Error Codes.

ID	Error Message
16600001	The system ability works abnormally.
16600002	The specified token or callback is not registered.
16600004	The specified callback has been registered.

Example

  import continuationManager from '@ohos.continuation.continuationManager';
  let token: number = 1;
  try {
    continuationManager.off("deviceUnselected", token);
  } catch (err) {
    console.error('off failed, cause: ' + JSON.stringify(err));
  }

continuationManager.startDeviceManager^(deprecated)

startDeviceManager(token: number, callback: AsyncCallback<void>): void;

Starts the device selection module to show the list of available devices on the network. This API does not involve any filter parameters and uses an asynchronous callback to return the result.

This API is deprecated since API version 9. You are advised to use startContinuationDeviceManager instead.

System capability: SystemCapability.Ability.DistributedAbilityManager

Parameters

Name	Type	Mandatory	Description
token	number	Yes	Token obtained after the registration of the continuation management service.
callback	AsyncCallback<void>	Yes	Callback used to return the result.

Example

  import continuationManager from '@ohos.continuation.continuationManager';
  let token: number = 1;
  continuationManager.startDeviceManager(token, (err, data) => {
    if (err.code != 0) {
      console.error('startDeviceManager failed, cause: ' + JSON.stringify(err));
      return;
    }
    console.info('startDeviceManager finished, ' + JSON.stringify(data));
  });

continuationManager.startDeviceManager^(deprecated)

startDeviceManager(token: number, options: ContinuationExtraParams, callback: AsyncCallback<void>): void;

Starts the device selection module to show the list of available devices on the network. This API uses an asynchronous callback to return the result.

This API is deprecated since API version 9. You are advised to use startContinuationDeviceManager instead.

System capability: SystemCapability.Ability.DistributedAbilityManager

Parameters

Name	Type	Mandatory	Description
token	number	Yes	Token obtained after the registration of the continuation management service.
options	ContinuationExtraParams	Yes	Extra parameters used to filter the list of available devices.
callback	AsyncCallback<void>	Yes	Callback used to return the result.

Example

  import continuationManager from '@ohos.continuation.continuationManager';
  let token: number = 1;
  continuationManager.startDeviceManager(
    token,
    {
      deviceType: ["00E"]
    },
    (err, data) => {
      if (err.code != 0) {
        console.error('startDeviceManager failed, cause: ' + JSON.stringify(err));
        return;
      }
      console.info('startDeviceManager finished, ' + JSON.stringify(data));
  });

continuationManager.startDeviceManager^(deprecated)

startDeviceManager(token: number, options?: ContinuationExtraParams): Promise<void>;

Starts the device selection module to show the list of available devices on the network. This API uses a promise to return the result.

This API is deprecated since API version 9. You are advised to use startContinuationDeviceManager instead.

System capability: SystemCapability.Ability.DistributedAbilityManager

Parameters

Name	Type	Mandatory	Description
token	number	Yes	Token obtained after the registration of the continuation management service.
options	ContinuationExtraParams	No	Extra parameters used to filter the list of available devices. This parameter can be null.

Return value

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

Example

  import continuationManager from '@ohos.continuation.continuationManager';
  import { BusinessError } from '@ohos.base';
  let token: number = -1;
  continuationManager.startDeviceManager(
    token,
    {
      deviceType: ["00E"]
    }).then((data) => {
      console.info('startDeviceManager finished, ' + JSON.stringify(data));
    }).catch((err: BusinessError) => {
      console.error('startDeviceManager failed, cause: ' + JSON.stringify(err));
  });

continuationManager.startContinuationDeviceManager⁹⁺

startContinuationDeviceManager(token: number, callback: AsyncCallback<void>): void;

Starts the device selection module to show the list of available devices on the network. This API does not involve any filter parameters and uses an asynchronous callback to return the result.

Required permissions: ohos.permission.DISTRIBUTED_DATASYNC

System capability: SystemCapability.Ability.DistributedAbilityManager

Parameters

Name	Type	Mandatory	Description
token	number	Yes	Token obtained after the registration of the continuation management service.
callback	AsyncCallback<void>	Yes	Callback used to return the result.

Error codes

For details about the error codes, see Distributed Scheduler Error Codes.

ID	Error Message
16600001	The system ability works abnormally.
16600002	The specified token or callback is not registered.

Example

  import continuationManager from '@ohos.continuation.continuationManager';
  let token: number = -1;
  try {
    continuationManager.startContinuationDeviceManager(token, (err, data) => {
      if (err.code != 0) {
        console.error('startContinuationDeviceManager failed, cause: ' + JSON.stringify(err));
        return;
      }
      console.info('startContinuationDeviceManager finished, ' + JSON.stringify(data));
    });
  } catch (err) {
    console.error('startContinuationDeviceManager failed, cause: ' + JSON.stringify(err));
  }

continuationManager.startContinuationDeviceManager⁹⁺

startContinuationDeviceManager(token: number, options: ContinuationExtraParams, callback: AsyncCallback<void>): void;

Starts the device selection module to show the list of available devices on the network. This API uses an asynchronous callback to return the result.

Required permissions: ohos.permission.DISTRIBUTED_DATASYNC

System capability: SystemCapability.Ability.DistributedAbilityManager

Parameters

Name	Type	Mandatory	Description
token	number	Yes	Token obtained after the registration of the continuation management service.
options	ContinuationExtraParams	Yes	Extra parameters used to filter the list of available devices.
callback	AsyncCallback<void>	Yes	Callback used to return the result.

Error codes

For details about the error codes, see Distributed Scheduler Error Codes.

ID	Error Message
16600001	The system ability works abnormally.
16600002	The specified token or callback is not registered.

Example

  import continuationManager from '@ohos.continuation.continuationManager';
  let token: number = -1;
  try {
    continuationManager.startContinuationDeviceManager(
      token,
      {
        deviceType: ["00E"]
      },
      (err, data) => {
        if (err.code != 0) {
          console.error('startContinuationDeviceManager failed, cause: ' + JSON.stringify(err));
          return;
        }
        console.info('startContinuationDeviceManager finished, ' + JSON.stringify(data));
    });
  } catch (err) {
    console.error('startContinuationDeviceManager failed, cause: ' + JSON.stringify(err));
  }

continuationManager.startContinuationDeviceManager⁹⁺

startContinuationDeviceManager(token: number, options?: ContinuationExtraParams): Promise<void>;

Starts the device selection module to show the list of available devices on the network. This API uses a promise to return the result.

Required permissions: ohos.permission.DISTRIBUTED_DATASYNC

System capability: SystemCapability.Ability.DistributedAbilityManager

Parameters

Name	Type	Mandatory	Description
token	number	Yes	Token obtained after the registration of the continuation management service.
options	ContinuationExtraParams	No	Extra parameters used to filter the list of available devices. This parameter can be null.

Return value

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

Error codes

For details about the error codes, see Distributed Scheduler Error Codes.

ID	Error Message
16600001	The system ability works abnormally.
16600002	The specified token or callback is not registered.

Example

  import continuationManager from '@ohos.continuation.continuationManager';
  import { BusinessError } from '@ohos.base';
  let token: number = -1;
  try {
    continuationManager.startContinuationDeviceManager(
      token,
      {
        deviceType: ["00E"]
      }).then((data) => {
        console.info('startContinuationDeviceManager finished, ' + JSON.stringify(data));
      }).catch((err: BusinessError) => {
        console.error('startContinuationDeviceManager failed, cause: ' + JSON.stringify(err));
      });
  } catch (err) {
    console.error('startContinuationDeviceManager failed, cause: ' + JSON.stringify(err));
  }

continuationManager.updateConnectStatus^(deprecated)

updateConnectStatus(token: number, deviceId: string, status: DeviceConnectState, callback: AsyncCallback<void>): void;

Instructs the device selection module to update the device connection state. This API uses an asynchronous callback to return the result.

This API is deprecated since API version 9. You are advised to use updateContinuationState instead.

System capability: SystemCapability.Ability.DistributedAbilityManager

Parameters

Name	Type	Mandatory	Description
token	number	Yes	Token obtained after the registration of the continuation management service.
deviceId	string	Yes	Device ID.
status	DeviceConnectState	Yes	Device connection state.
callback	AsyncCallback<void>	Yes	Callback used to return the result.

Example

  import continuationManager from '@ohos.continuation.continuationManager';
  let token: number = -1;
  let deviceId: string = "test deviceId";
  continuationManager.updateConnectStatus(token, deviceId, continuationManager.DeviceConnectState.CONNECTED, (err, data) => {
    if (err.code != 0) {
      console.error('updateConnectStatus failed, cause: ' + JSON.stringify(err));
      return;
    }
    console.info('updateConnectStatus finished, ' + JSON.stringify(data));
  });

continuationManager.updateConnectStatus^(deprecated)

updateConnectStatus(token: number, deviceId: string, status: DeviceConnectState): Promise<void>;

Instructs the device selection module to update the device connection state. This API uses a promise to return the result.

This API is deprecated since API version 9. You are advised to use updateContinuationState instead.

System capability: SystemCapability.Ability.DistributedAbilityManager

Parameters

Name	Type	Mandatory	Description
token	number	Yes	Token obtained after the registration of the continuation management service.
deviceId	string	Yes	Device ID.
status	DeviceConnectState	Yes	Device connection state.

Return value

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

Example

  import continuationManager from '@ohos.continuation.continuationManager';
  import { BusinessError } from '@ohos.base';
  let token: number = 1;
  let deviceId: string = "test deviceId";
  continuationManager.updateConnectStatus(token, deviceId, continuationManager.DeviceConnectState.CONNECTED)
    .then((data) => {
      console.info('updateConnectStatus finished, ' + JSON.stringify(data));
    })
    .catch((err: BusinessError) => {
      console.error('updateConnectStatus failed, cause: ' + JSON.stringify(err));
  });

continuationManager.updateContinuationState⁹⁺

updateContinuationState(token: number, deviceId: string, status: DeviceConnectState, callback: AsyncCallback<void>): void;

Instructs the device selection module to update the device connection state. This API uses an asynchronous callback to return the result.

Required permissions: ohos.permission.DISTRIBUTED_DATASYNC

System capability: SystemCapability.Ability.DistributedAbilityManager

Parameters

Name	Type	Mandatory	Description
token	number	Yes	Token obtained after the registration of the continuation management service.
deviceId	string	Yes	Device ID.
status	DeviceConnectState	Yes	Device connection state.
callback	AsyncCallback<void>	Yes	Callback used to return the result.

Error codes

For details about the error codes, see Distributed Scheduler Error Codes.

ID	Error Message
16600001	The system ability works abnormally.
16600002	The specified token or callback is not registered.

Example

  import continuationManager from '@ohos.continuation.continuationManager';
  let token: number = 1;
  let deviceId: string = "test deviceId";
  try {
    continuationManager.updateContinuationState(token, deviceId, continuationManager.DeviceConnectState.CONNECTED, (err, data) => {
      if (err.code != 0) {
        console.error('updateContinuationState failed, cause: ' + JSON.stringify(err));
        return;
      }
      console.info('updateContinuationState finished, ' + JSON.stringify(data));
    });
  } catch (err) {
    console.error('updateContinuationState failed, cause: ' + JSON.stringify(err));
  }

continuationManager.updateContinuationState⁹⁺

updateContinuationState(token: number, deviceId: string, status: DeviceConnectState): Promise<void>;

Instructs the device selection module to update the device connection state. This API uses a promise to return the result.

Required permissions: ohos.permission.DISTRIBUTED_DATASYNC

System capability: SystemCapability.Ability.DistributedAbilityManager

Parameters

Name	Type	Mandatory	Description
token	number	Yes	Token obtained after the registration of the continuation management service.
deviceId	string	Yes	Device ID.
status	DeviceConnectState	Yes	Device connection state.

Return value

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

Error codes

For details about the error codes, see Distributed Scheduler Error Codes.

ID	Error Message
16600001	The system ability works abnormally.
16600002	The specified token or callback is not registered.

Example

  import continuationManager from '@ohos.continuation.continuationManager';
  import { BusinessError } from '@ohos.base';
  let token: number = 1;
  let deviceId: string = "test deviceId";
  try {
    continuationManager.updateContinuationState(token, deviceId, continuationManager.DeviceConnectState.CONNECTED)
      .then((data) => {
        console.info('updateContinuationState finished, ' + JSON.stringify(data));
      })
      .catch((err: BusinessError) => {
        console.error('updateContinuationState failed, cause: ' + JSON.stringify(err));
      });
  } catch (err) {
    console.error('updateContinuationState failed, cause: ' + JSON.stringify(err));
  }

continuationManager.unregister^(deprecated)

unregister(token: number, callback: AsyncCallback<void>): void;

Deregisters the continuation management service. This API uses an asynchronous callback to return the result.

This API is deprecated since API version 9. You are advised to use unregisterContinuation instead.

System capability: SystemCapability.Ability.DistributedAbilityManager

Parameters

Name	Type	Mandatory	Description
token	number	Yes	Token obtained after the registration of the continuation management service.
callback	AsyncCallback<void>	Yes	Callback used to return the result.

Example

  import continuationManager from '@ohos.continuation.continuationManager';
  let token: number = 1;
  continuationManager.unregister(token, (err, data) => {
    if (err.code != 0) {
      console.error('unregister failed, cause: ' + JSON.stringify(err));
      return;
    }
    console.info('unregister finished, ' + JSON.stringify(data));
  });

continuationManager.unregister^(deprecated)

unregister(token: number): Promise<void>;

Deregisters the continuation management service. This API uses a promise to return the result.

This API is deprecated since API version 9. You are advised to use unregisterContinuation instead.

System capability: SystemCapability.Ability.DistributedAbilityManager

Parameters

Name	Type	Mandatory	Description
token	number	Yes	Token obtained after the registration of the continuation management service.

Return value

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

Example

  import continuationManager from '@ohos.continuation.continuationManager';
  import { BusinessError } from '@ohos.base';
  let token: number = 1;
  continuationManager.unregister(token)
    .then((data) => {
      console.info('unregister finished, ' + JSON.stringify(data));
    }).catch((err: BusinessError) => {
      console.error('unregister failed, cause: ' + JSON.stringify(err));
  });

continuationManager.unregisterContinuation⁹⁺

unregisterContinuation(token: number, callback: AsyncCallback<void>): void;

Deregisters the continuation management service. This API uses an asynchronous callback to return the result.

Required permissions: ohos.permission.DISTRIBUTED_DATASYNC

System capability: SystemCapability.Ability.DistributedAbilityManager

Parameters

Name	Type	Mandatory	Description
token	number	Yes	Token obtained after the registration of the continuation management service.
callback	AsyncCallback<void>	Yes	Callback used to return the result.

Error codes

For details about the error codes, see Distributed Scheduler Error Codes.

ID	Error Message
16600001	The system ability works abnormally.
16600002	The specified token or callback is not registered.

Example

  import continuationManager from '@ohos.continuation.continuationManager';
  import { BusinessError } from '@ohos.base';
  let token: number = 1;
  try {
    continuationManager.unregisterContinuation(token, (err, data) => {
      if (err.code != 0) {
        console.error('unregisterContinuation failed, cause: ' + JSON.stringify(err));
        return;
      }
      console.info('unregisterContinuation finished, ' + JSON.stringify(data));
    });
  } catch (err) {
    console.error('unregisterContinuation failed, cause: ' + JSON.stringify(err));
  }

continuationManager.unregisterContinuation⁹⁺

unregisterContinuation(token: number): Promise<void>;

Deregisters the continuation management service. This API uses a promise to return the result.

Required permissions: ohos.permission.DISTRIBUTED_DATASYNC

System capability: SystemCapability.Ability.DistributedAbilityManager

Parameters

Name	Type	Mandatory	Description
token	number	Yes	Token obtained after the registration of the continuation management service.

Return value

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

Error codes

For details about the error codes, see Distributed Scheduler Error Codes.

ID	Error Message
16600001	The system ability works abnormally.
16600002	The specified token or callback is not registered.

Example

  import continuationManager from '@ohos.continuation.continuationManager';
  import { BusinessError } from '@ohos.base';
  let token: number = -1;
  try {
    continuationManager.unregisterContinuation(token).then((data) => {
        console.info('unregisterContinuation finished, ' + JSON.stringify(data));
      }).catch((err: BusinessError) => {
        console.error('unregisterContinuation failed, cause: ' + JSON.stringify(err));
    });
  } catch (err) {
    console.error('unregisterContinuation failed, cause: ' + JSON.stringify(err));
  }

DeviceConnectState

Enumerates the device connection states.

System capability: SystemCapability.Ability.DistributedAbilityManager

Name	Value	Description
IDLE	0	The device is in the initial state.
CONNECTING	1	The device is being connected.
CONNECTED	2	The device is connected.
DISCONNECTING	3	The device is being disconnected.

ContinuationMode

Enumerates the continuation modes provided by the device selection module.

System capability: SystemCapability.Ability.DistributedAbilityManager

Name	Value	Description
COLLABORATION_SINGLE	0	Single-choice mode.
COLLABORATION_MULTIPLE	1	Multi-choice mode.

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harmony 鸿蒙@ohos.continuation.continuationManager (continuationManager)

@ohos.continuation.continuationManager (continuationManager)

Modules to Import

continuationManager.register^(deprecated)

continuationManager.register^(deprecated)

continuationManager.register^(deprecated)

continuationManager.registerContinuation⁹⁺

continuationManager.registerContinuation⁹⁺

continuationManager.registerContinuation⁹⁺

continuationManager.on(“deviceConnect”)^(deprecated)

continuationManager.on(“deviceDisconnect”)^(deprecated)

continuationManager.off(“deviceConnect”)^(deprecated)

continuationManager.off(“deviceDisconnect”)^(deprecated)

continuationManager.on(“deviceSelected”)⁹⁺

continuationManager.on(“deviceUnselected”)⁹⁺

continuationManager.off(“deviceSelected”)⁹⁺

continuationManager.off(“deviceUnselected”)⁹⁺

continuationManager.startDeviceManager^(deprecated)

continuationManager.startDeviceManager^(deprecated)

continuationManager.startDeviceManager^(deprecated)

continuationManager.startContinuationDeviceManager⁹⁺

continuationManager.startContinuationDeviceManager⁹⁺

continuationManager.startContinuationDeviceManager⁹⁺

continuationManager.updateConnectStatus^(deprecated)

continuationManager.updateConnectStatus^(deprecated)

continuationManager.updateContinuationState⁹⁺

continuationManager.updateContinuationState⁹⁺

continuationManager.unregister^(deprecated)

continuationManager.unregister^(deprecated)

continuationManager.unregisterContinuation⁹⁺

continuationManager.unregisterContinuation⁹⁺

DeviceConnectState

ContinuationMode

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harmony 鸿蒙@ohos.continuation.continuationManager (continuationManager)

@ohos.continuation.continuationManager (continuationManager)

Modules to Import

continuationManager.register(deprecated)

continuationManager.register(deprecated)

continuationManager.register(deprecated)

continuationManager.registerContinuation9+

continuationManager.registerContinuation9+

continuationManager.registerContinuation9+

continuationManager.on(“deviceConnect”)(deprecated)

continuationManager.on(“deviceDisconnect”)(deprecated)

continuationManager.off(“deviceConnect”)(deprecated)

continuationManager.off(“deviceDisconnect”)(deprecated)

continuationManager.on(“deviceSelected”)9+

continuationManager.on(“deviceUnselected”)9+

continuationManager.off(“deviceSelected”)9+

continuationManager.off(“deviceUnselected”)9+

continuationManager.startDeviceManager(deprecated)

continuationManager.startDeviceManager(deprecated)

continuationManager.startDeviceManager(deprecated)

continuationManager.startContinuationDeviceManager9+

continuationManager.startContinuationDeviceManager9+

continuationManager.startContinuationDeviceManager9+

continuationManager.updateConnectStatus(deprecated)

continuationManager.updateConnectStatus(deprecated)

continuationManager.updateContinuationState9+

continuationManager.updateContinuationState9+

continuationManager.unregister(deprecated)

continuationManager.unregister(deprecated)

continuationManager.unregisterContinuation9+

continuationManager.unregisterContinuation9+

DeviceConnectState

ContinuationMode

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本文目录

continuationManager.register^(deprecated)

continuationManager.register^(deprecated)

continuationManager.register^(deprecated)

continuationManager.registerContinuation⁹⁺

continuationManager.registerContinuation⁹⁺

continuationManager.registerContinuation⁹⁺

continuationManager.on(“deviceConnect”)^(deprecated)

continuationManager.on(“deviceDisconnect”)^(deprecated)

continuationManager.off(“deviceConnect”)^(deprecated)

continuationManager.off(“deviceDisconnect”)^(deprecated)

continuationManager.on(“deviceSelected”)⁹⁺

continuationManager.on(“deviceUnselected”)⁹⁺

continuationManager.off(“deviceSelected”)⁹⁺

continuationManager.off(“deviceUnselected”)⁹⁺

continuationManager.startDeviceManager^(deprecated)

continuationManager.startDeviceManager^(deprecated)

continuationManager.startDeviceManager^(deprecated)

continuationManager.startContinuationDeviceManager⁹⁺

continuationManager.startContinuationDeviceManager⁹⁺

continuationManager.startContinuationDeviceManager⁹⁺

continuationManager.updateConnectStatus^(deprecated)

continuationManager.updateConnectStatus^(deprecated)

continuationManager.updateContinuationState⁹⁺

continuationManager.updateContinuationState⁹⁺

continuationManager.unregister^(deprecated)

continuationManager.unregister^(deprecated)

continuationManager.unregisterContinuation⁹⁺

continuationManager.unregisterContinuation⁹⁺