harmony 鸿蒙@ohos.app.businessAbilityRouter (Business Ability Router)

2023-06-24
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@ohos.app.businessAbilityRouter (Business Ability Router)

The businessAbilityRouter module provides APIs for you to query the business ability information of applications installed on the device. It provides a unified template for you to register standard services by type. Based on the information, a system application or third-party application can obtain services that meet certain criteria and select a proper service. The module also provides unified rules to manage redirection between applications and services. It prevents arbitrary switching between the foreground and background and avoids the distribution of third-party applications by means of redirection.

NOTE

The initial APIs of this module are supported since API version 10. Newly added APIs will be marked with a superscript to indicate their earliest API version.

The APIs provided by this module are system APIs.

Modules to Import

import businessAbilityRouter from '@ohos.app.businessAbilityRouter';

Required Permissions

Permission	Permission Level	Description
ohos.permission.GET_BUNDLE_INFO_PRIVILEGED	system_basic	Permission to query information about all bundles.

For details, see Permission Levels.

BusinessType

Enumerates the types of business abilities.

System capability: SystemCapability.Ability.AbilityRuntime.Core

System API: This is a system API.

Name	Value	Description
SHARE	0	Business ability of the share type.
UNSPECIFIED	255	Business ability of an unspecified type.

BusinessAbilityFilter

Describes the criteria for filtering business abilities.

System capability: SystemCapability.Ability.AbilityRuntime.Core

System API: This is a system API.

Name	Type	Readable	Writable	Description
businessType	BusinessType	Yes	No	Type of the business ability.
mimeType	string	Yes	No	MIME type supported by the business ability.
uri	string	Yes	No	URI supported by the business ability.

businessAbilityRouter.queryBusinessAbilityInfo

queryBusinessAbilityInfo(filter: BusinessAbilityFilter, callback: AsyncCallback<Array<BusinessAbilityInfo>>): void;

Obtains the business ability information based on the specified filter criteria. This API uses an asynchronous callback to return the result. If the operation is successful, the business ability information is returned; otherwise, an error object is returned.

Required permissions: ohos.permission.GET_BUNDLE_INFO_PRIVILEGED

System capability: SystemCapability.Ability.AbilityRuntime.Core

System API: This is a system API.

Parameters

Name	Type	Mandatory	Description
filter	BusinessAbilityFilter	Yes	Object used to filter the business abilities.
callback	AsyncCallback<Array<BusinessAbilityInfo>>	Yes	Callback used to return the result. If the operation is successful, the business ability information that meets the filter criteria is returned; otherwise, an error object is returned.

Example

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

let filter: businessAbilityRouter.BusinessAbilityFilter = {businessType: businessAbilityRouter.BusinessType.SHARE};

try {
    businessAbilityRouter.queryBusinessAbilityInfo(filter, (error, data) => {
        if (error) {
            console.error('queryBusinessAbilityInfo failed ' + error.message);
            return;
        }
        console.info('queryBusinessAbilityInfo success');
    });
} catch (error) {
    let message = (error as BusinessError).message;
    console.error('queryBusinessAbilityInfo failed ' + message);
}

businessAbilityRouter.queryBusinessAbilityInfo

queryBusinessAbilityInfo(filter: BusinessAbilityFilter): Promise<Array<BusinessAbilityInfo>>;

Obtains the business ability information based on the specified filter criteria. This API uses a promise to return the result. If the operation is successful, the business ability information is returned; otherwise, an error object is returned.

Required permissions: ohos.permission.GET_BUNDLE_INFO_PRIVILEGED

System capability: SystemCapability.Ability.AbilityRuntime.Core

System API: This is a system API.

Parameters

Name	Type	Mandatory	Description
filter	BusinessAbilityFilter	Yes	Object used to filter the business abilities.

Return value

Type	Description
Promise<Array<BusinessAbilityInfo>>	Promise used to return the business ability information that meets the filter criteria.

Example

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

let filter: businessAbilityRouter.BusinessAbilityFilter = {businessType: businessAbilityRouter.BusinessType.SHARE};

try {
    businessAbilityRouter.queryBusinessAbilityInfo(filter)
        .then(() => {
            console.info('queryBusinessAbilityInfo success');
        }).catch((error: BusinessError) => {
            console.error('queryBusinessAbilityInfo failed ' + error.message);
        });
} catch (error) {
    let message = (error as BusinessError).message;
    console.error('queryBusinessAbilityInfo failed ' + message);
}