1# Background Tasks Kit 2 3- ArkTS APIs 4 - [@ohos.reminderAgentManager (Reminder Agent Management)](js-apis-reminderAgentManager.md) 5 - [@ohos.resourceschedule.backgroundTaskManager (Background Task Management)](js-apis-resourceschedule-backgroundTaskManager.md) 6 - [@ohos.resourceschedule.workScheduler (Deferred Task Scheduling)](js-apis-resourceschedule-workScheduler.md) 7 - [@ohos.WorkSchedulerExtensionAbility (Deferred Task Scheduling Callbacks)](js-apis-WorkSchedulerExtensionAbility.md) 8 <!--Del--> 9 - [@ohos.reminderAgentManager (Reminder Agent Management) (System API)](js-apis-reminderAgentManager-sys.md) 10 - [@ohos.resourceschedule.backgroundTaskManager (Background Task Management) (System API)](js-apis-resourceschedule-backgroundTaskManager-sys.md) 11 - [@ohos.resourceschedule.deviceStandby (Device Standby) (System API)](js-apis-resourceschedule-deviceStandby-sys.md) 12 - [@ohos.resourceschedule.usageStatistics (Device Usage Statistics) (System API)](js-apis-resourceschedule-deviceUsageStatistics-sys.md) 13 <!--DelEnd--> 14 - application 15 - [WorkSchedulerExtensionContext](js-apis-inner-application-WorkSchedulerExtensionContext.md) 16 - APIs No Longer Maintained 17 - [@ohos.backgroundTaskManager (Background Task Management)](js-apis-backgroundTaskManager.md) 18 - [@ohos.bundleState (Device Usage Statistics)](js-apis-deviceUsageStatistics.md) 19 - [@ohos.reminderAgent (Reminder Agent)](js-apis-reminderAgent.md) 20 <!--Del--> 21 - [@ohos.backgroundTaskManager (Background Task Management) (System API)](js-apis-backgroundTaskManager-sys.md) 22 - [@ohos.bundleState (Device Usage Statistics) (System API)](js-apis-deviceUsageStatistics-sys.md) 23 <!--DelEnd--> 24- C APIs 25 - Modules 26 - [TransientTask](_transient_task.md) 27 - Header Files 28 - [transient_task_api.h](transient__task__api_8h.md) 29 - [transient_task_type.h](transient__task__type_8h.md) 30 - Structs 31 - [TransientTask_DelaySuspendInfo](_transient_task___delay_suspend_info.md) 32- Error Codes 33 - [backgroundTaskManager Error Codes](errorcode-backgroundTaskMgr.md) 34 - [DeviceUsageStatistics Error Codes](errorcode-DeviceUsageStatistics.md) 35 - [reminderAgentManager Error Codes](errorcode-reminderAgentManager.md) 36 - [workScheduler Error Codes](errorcode-workScheduler.md) 37