# Background Tasks Kit

- ArkTS APIs
  - [@ohos.reminderAgentManager (Reminder Agent Management)](js-apis-reminderAgentManager.md)
  - [@ohos.resourceschedule.backgroundTaskManager (Background Task Management)](js-apis-resourceschedule-backgroundTaskManager.md)
  - [@ohos.resourceschedule.workScheduler (Deferred Task Scheduling)](js-apis-resourceschedule-workScheduler.md)
  - [@ohos.WorkSchedulerExtensionAbility (Deferred Task Scheduling Callbacks)](js-apis-WorkSchedulerExtensionAbility.md)
  <!--Del-->
  - [@ohos.reminderAgentManager (Reminder Agent Management) (System API)](js-apis-reminderAgentManager-sys.md)
  - [@ohos.resourceschedule.backgroundTaskManager (Background Task Management) (System API)](js-apis-resourceschedule-backgroundTaskManager-sys.md)
  - [@ohos.resourceschedule.deviceStandby (Device Standby) (System API)](js-apis-resourceschedule-deviceStandby-sys.md)
  - [@ohos.resourceschedule.usageStatistics (Device Usage Statistics) (System API)](js-apis-resourceschedule-deviceUsageStatistics-sys.md)
  <!--DelEnd-->
  - application
    - [WorkSchedulerExtensionContext](js-apis-inner-application-WorkSchedulerExtensionContext.md)
    - [WorkSchedulerExtensionContext (System API)](js-apis-inner-application-WorkSchedulerExtensionContext-sys.md)
  - APIs No Longer Maintained
    - [@ohos.backgroundTaskManager (Background Task Management)](js-apis-backgroundTaskManager.md)
    - [@ohos.bundleState (Device Usage Statistics)](js-apis-deviceUsageStatistics.md)
    - [@ohos.reminderAgent (Reminder Agent)](js-apis-reminderAgent.md)
    <!--Del-->
    - [@ohos.backgroundTaskManager (Background Task Management) (System API)](js-apis-backgroundTaskManager-sys.md)
    - [@ohos.bundleState (Device Usage Statistics) (System API)](js-apis-deviceUsageStatistics-sys.md)
    <!--DelEnd-->
- C APIs
  - Modules
    - [TransientTask](_transient_task.md)
  - Header Files
    - [transient_task_api.h](transient__task__api_8h.md)
    - [transient_task_type.h](transient__task__type_8h.md)
  - Structs
    - [TransientTask_DelaySuspendInfo](_transient_task___delay_suspend_info.md)
- Error Codes
  - [backgroundTaskManager Error Codes](errorcode-backgroundTaskMgr.md)
  - [DeviceUsageStatistics Error Codes](errorcode-DeviceUsageStatistics.md)
  - [reminderAgentManager Error Codes](errorcode-reminderAgentManager.md)
  - [workScheduler Error Codes](errorcode-workScheduler.md)