harmony 鸿蒙@ohos.backgroundTaskManager (Background Task Management) (System API)
@ohos.backgroundTaskManager (Background Task Management) (System API)
The BackgroundTaskManager module provides APIs to manage background tasks.
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.
If an application has a task that needs to be continued when the application is switched to the background and can be completed within a short period of time, the application can request a transient task. For example, if a user chooses to clear junk files in the Files application and exits the application, the application can request a transient task to complete the cleanup.
If an application has a service that can be intuitively perceived by users and needs to run in the background for a long period of time (for example, music playback in the background), the application can request a continuous task.
If a privileged system application needs to use certain system resources (for example, it wants to receive common events when suspended), it can request efficiency resources.
NOTE
This module is deprecated since API version 9. You are advised to use @ohos.resourceschedule.backgroundTaskManager (Background Task Management).
The initial APIs of this module are supported since API version 7. Newly added APIs will be marked with a superscript to indicate their earliest API version.
This topic describes only system APIs provided by the module. For details about its public APIs, see @ohos.backgroundTaskManager (Background Task Management).
Modules to Import
import backgroundTaskManager from '@ohos.backgroundTaskManager';
BackgroundMode8+
System capability: SystemCapability.ResourceSchedule.BackgroundTaskManager.ContinuousTask
| Name | Value | Description |
|---|---|---|
| WIFI_INTERACTION | 7 | WLAN-related. This is a system API. |
| VOIP | 8 | Audio and video calls. This is a system API. |
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