Background Task Management
Introduction
This sample shows how a download task can be performed at the background even if the app exits. The display effect is as follows:
Concepts
If a service needs to be continued when the application or service module is running in the background (not visible to users), the application or service module can request a transient task to delay the suspension or a continuous task to prevent the suspension.
Required Permissions
ohos.permission.KEEP_BACKGROUND_RUNNING
Usage
- Touch the Download button and exit the app. The download task is pushed to the background for execution. When a task starts to be executed in the background, a notification and the download progress will be displayed.
Constraints
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This sample can only be run on standard-system devices.
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You need to refresh the notification window to view the download progress. In addition, the download ends when the download progress reaches 20% in this sample.
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This feature is supported form API version 9.
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DevEco Studio 3.0 Beta3 (Build version: 3.0.0.901, built on May 30, 2022) must be used.