@ohos.application.StaticSubscriberExtensionContext (StaticSubscriberExtensionContext)

The StaticSubscriberExtensionContext module, inherited from ExtensionContext, provides context for StaticSubscriberExtensionAbilities.

You can use the APIs of this module to start StaticSubscriberExtensionAbilities.

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 of this module can be used only in the stage model.

Modules to Import

import StaticSubscriberExtensionContext from '@ohos.application.StaticSubscriberExtensionContext'

Usage

Before using the StaticSubscriberExtensionContext module, you must first obtain a StaticSubscriberExtensionAbility instance.

import StaticSubscriberExtensionAbility from '@ohos.application.StaticSubscriberExtensionAbility'
import StaticSubscriberExtensionContext from '@ohos.application.StaticSubscriberExtensionContext'

export default class MyStaticSubscriberExtensionAbility extends StaticSubscriberExtensionAbility {
    context: StaticSubscriberExtensionContext = this.context;
};

StaticSubscriberExtensionContext.startAbility

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

Starts an ability that belongs to the same application as this StaticSubscriberExtensionAbility. 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 visible of the target ability is false in cross-application scenarios, the caller must have the ohos.permission.START_INVISIBLE_ABILITY permission.

Required permissions: ohos.permission.START_ABILITIES_FROM_BACKGROUND

System capability: SystemCapability.Ability.AbilityRuntime.Core

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

Parameters

Error codes

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.myapp",
    abilityName: "MyAbility"
  };

  try {
    this.context.startAbility(want, (error: BusinessError) => {
      if (error) {
        // Process service logic errors.
        console.log('startAbility failed, error.code: ' + JSON.stringify(error.code) +
        ' error.message: ' + JSON.stringify(error.message));
        return;
      }
      // Carry out normal service processing.
      console.log('startAbility succeed');
    });
  } catch (paramError) {
    // Process input parameter errors.
    let code = (paramError as BusinessError).code;
    let message = (paramError as BusinessError).message;
    console.log('startAbility failed, error.code: ' + JSON.stringify(code) +
    ' error.message: ' + JSON.stringify(message));
  }

StaticSubscriberExtensionContext.startAbility

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

Starts an ability that belongs to the same application as this StaticSubscriberExtensionAbility. This API uses a promise 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 visible of the target ability is false in cross-application scenarios, the caller must have the ohos.permission.START_INVISIBLE_ABILITY permission.

Required permissions: ohos.permission.START_ABILITIES_FROM_BACKGROUND

System capability: SystemCapability.Ability.AbilityRuntime.Core

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

Parameters

Return value

Error codes

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.myapp",
    abilityName: "MyAbility"
  };

  try {
    this.context.startAbility(want)
      .then(() => {
        // Carry out normal service processing.
        console.log('startAbility succeed');
      })
      .catch((error: BusinessError) => {
        // Process service logic errors.
        console.log('startAbility failed, error.code: ' + JSON.stringify(error.code) +
        ' error.message: ' + JSON.stringify(error.message));
      });
  } catch (paramError) {
    // Process input parameter errors.
    let code = (paramError as BusinessError).code;
    let message = (paramError as BusinessError).message;
    console.log('startAbility failed, error.code: ' + JSON.stringify(code) +
    ' error.message: ' + JSON.stringify(message));
  }

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