前台服务类型

从 Android 14（API 级别 34）开始，您必须为每项前台服务声明适当的服务类型。这意味着，除了请求 FOREGROUND_SERVICE 权限之外，您还必须在应用清单中声明服务类型，并请求相应类型的前台服务权限。此外，根据具体的前台服务类型，您可能必须在启动服务之前请求运行时权限。

相机

Foreground service type to declare in manifest under android:foregroundServiceType

camera

Permission to declare in your manifest

FOREGROUND_SERVICE_CAMERA

Constant to pass to startForeground()

FOREGROUND_SERVICE_TYPE_CAMERA

Runtime prerequisites

Request and be granted the CAMERA runtime permission

Description

Continue to access the camera from the background, such as video chat apps that allow for multitasking.

连接的设备

Foreground service type to declare in manifest under

android:foregroundServiceType

connectedDevice

Permission to declare in your manifest

FOREGROUND_SERVICE_CONNECTED_DEVICE

Constant to pass to startForeground()

FOREGROUND_SERVICE_TYPE_CONNECTED_DEVICE

Runtime prerequisites

At least one of the following conditions must be true:

• Declare at least one of the following permissions in your manifest:

  • CHANGE_NETWORK_STATE
  • CHANGE_WIFI_STATE
  • CHANGE_WIFI_MULTICAST_STATE
  • NFC
  • TRANSMIT_IR

• Request and be granted at least one of the following runtime permissions:

  • BLUETOOTH_CONNECT
  • BLUETOOTH_ADVERTISE
  • BLUETOOTH_SCAN
  • UWB_RANGING

• Call UsbManager.requestPermission()

Description

Interactions with external devices that require a Bluetooth, NFC, IR, USB, or network connection.

Alternatives

If your app needs to do continuous data transfer to an external device, consider using the companion device manager instead. Use the companion device presence API to help your app stay running while the companion device is in range.

If your app needs to scan for bluetooth devices, consider using the Bluetooth scan API instead.

数据同步

要在清单中的以下位置声明的前台服务类型

android:foregroundServiceType

dataSync

在清单中声明的权限

FOREGROUND_SERVICE_DATA_SYNC

要传递给 startForeground() 的常量

FOREGROUND_SERVICE_TYPE_DATA_SYNC

运行时前提条件

无

说明

数据传输操作，例如：

• 数据上传或下载
• 备份和恢复操作
• 导入或导出操作
• 获取数据
• 本地文件处理
• 通过网络在设备和云端之间传输数据

替代方案

如需了解详情，请参阅数据同步前台服务的替代方案。

健康

要在清单中的以下位置声明的前台服务类型

android:foregroundServiceType

health

在清单中声明的权限

FOREGROUND_SERVICE_HEALTH

要传递给 startForeground() 的常量

FOREGROUND_SERVICE_TYPE_HEALTH

运行时前提条件

必须至少满足以下其中一个条件：

• 在清单中声明 HIGH_SAMPLING_RATE_SENSORS 权限。

• 至少请求并被授予以下其中一项运行时权限：

  • BODY_SENSORS
  • ACTIVITY_RECOGNITION

说明

为健身类别的应用（例如锻炼追踪器）提供支持的所有长时间运行的用例。

位置

Foreground service type to declare in manifest under

android:foregroundServiceType

location

Permission to declare in your manifest

FOREGROUND_SERVICE_LOCATION

Constant to pass to startForeground()

FOREGROUND_SERVICE_TYPE_LOCATION

Runtime prerequisites

The user must have enabled location services and the app must be granted at least one of the following runtime permissions:

• ACCESS_COARSE_LOCATION
• ACCESS_FINE_LOCATION

Description

Long-running use cases that require location access, such as navigation and location sharing.

Alternatives

If your app needs to be triggered when the user reaches specific locations, consider using the geofence API instead.

媒体

Foreground service type to declare in manifest under

android:foregroundServiceType

mediaPlayback

Permission to declare in your manifest

FOREGROUND_SERVICE_MEDIA_PLAYBACK

Constant to pass to startForeground()

FOREGROUND_SERVICE_TYPE_MEDIA_PLAYBACK

Runtime prerequisites

None

Description

Continue audio or video playback from the background. Support Digital Video Recording (DVR) functionality on Android TV.

Alternatives

If you're showing picture-in-picture video, use Picture-in-Picture mode.

仍在处理中的媒体内容

要在其清单中声明的前台服务类型

android:foregroundServiceType

mediaProcessing

在清单中声明的权限

FOREGROUND_SERVICE_MEDIA_PROCESSING

要传递给 startForeground() 的常量

FOREGROUND_SERVICE_TYPE_MEDIA_PROCESSING

运行时前提条件

无

说明

用于对媒体资源执行耗时操作的服务，例如将媒体转换为不同格式。系统允许此服务有有限的运行时间；在正常情况下，此时间限制为每 24 小时 6 小时。（此限制由应用的所有 mediaProcessing 前台服务共享。）

您的应用应在以下情况下手动停止媒体处理服务：

• 当转码操作完成或达到失败状态时，让服务调用 Service.stopForeground() 和 Service.stopSelf() 以彻底停止服务。

如果达到超时期限，系统会调用服务的 Service.onTimeout(int, int) 方法。此时，服务有几秒钟时间来调用 Service.stopSelf()。如果服务未调用 Service.stopSelf()，将发生 ANR，并显示以下错误消息：“<fgs_type> 的前台服务未在其超时内停止：<component_name>”。

注意：Service.onTimeout(int, int) 不适用于 Android 14 或更低版本。在运行这些版本的设备上，如果媒体处理服务达到超时期限，系统会立即缓存应用。因此，您的应用不应等待收到超时通知。而是应尽快终止前台服务或将其更改为后台服务。

媒体投影

Foreground service type to declare in manifest under

android:foregroundServiceType

mediaProjection

Permission to declare in your manifest

FOREGROUND_SERVICE_MEDIA_PROJECTION

Constant to pass to startForeground()

FOREGROUND_SERVICE_TYPE_MEDIA_PROJECTION

Runtime prerequisites

Call the createScreenCaptureIntent() method before starting the foreground service. Doing so shows a permission notification to the user; the user must grant the permission before you can create the service.

After you have created the foreground service, you can call MediaProjectionManager.getMediaProjection().

Description

Project content to non-primary display or external device using the MediaProjection APIs. This content doesn't have to be exclusively media content.

Alternatives

To stream media to another device, use the Google Cast SDK.

麦克风

Foreground service type to declare in manifest under

android:foregroundServiceType

microphone

Permission to declare in your manifest

FOREGROUND_SERVICE_MICROPHONE

Constant to pass to startForeground()

FOREGROUND_SERVICE_TYPE_MICROPHONE

Runtime prerequisites

Request and be granted the RECORD_AUDIO runtime permission.

Description

Continue microphone capture from the background, such as voice recorders or communication apps.

致电

Foreground service type to declare in manifest under

android:foregroundServiceType

phoneCall

Permission to declare in your manifest

FOREGROUND_SERVICE_PHONE_CALL

Constant to pass to startForeground()

FOREGROUND_SERVICE_TYPE_PHONE_CALL

Runtime prerequisites

At least one of these conditions must be true:

• App has declared the MANAGE_OWN_CALLS permission in its manifest file.

• App is the default dialer app through the ROLE_DIALER role.

Description

Continue an ongoing call using the ConnectionService APIs.

Alternatives

If you need to make phone, video, or VoIP calls, consider using the android.telecom library.

Consider using CallScreeningService to screen calls.

远程消息传递

要在其清单中声明的前台服务类型

android:foregroundServiceType

remoteMessaging

在清单中声明的权限

FOREGROUND_SERVICE_REMOTE_MESSAGING

要传递给 startForeground() 的常量

FOREGROUND_SERVICE_TYPE_REMOTE_MESSAGING

运行时前提条件

无

说明

将短信从一台设备转移到另一台设备。在用户切换设备时，帮助确保用户消息任务的连续性。

短期服务

Foreground service type to declare in manifest under

android:foregroundServiceType

shortService

Permission to declare in your manifest

None

Constant to pass to startForeground()

FOREGROUND_SERVICE_TYPE_SHORT_SERVICE

Runtime prerequisites

None

Description

Quickly finish critical work that cannot be interrupted or postponed.

This type has some unique characteristics:

• Can only run for a short period of time (about 3 minutes).
• No support for sticky foreground services.
• Cannot start other foreground services.
• Doesn't require a type-specific permission, though it still requires the FOREGROUND_SERVICE permission.
• A shortService can only change to another service type if the app is currently eligible to start a new foreground service.
• A foreground service can change its type to shortService at any time, at which point the timeout period begins.

The timeout for shortService begins from the moment that Service.startForeground() is called. The app is expected to call Service.stopSelf() or Service.stopForeground() before the timeout occurs. Otherwise, the new Service.onTimeout() is called, giving apps a brief opportunity to call stopSelf() or stopForeground() to stop their service.

A short time after Service.onTimeout() is called, the app enters a cached state and is no longer considered to be in the foreground, unless the user is actively interacting with the app. A short time after the app is cached and the service has not stopped, the app receives an ANR. The ANR message mentions FOREGROUND_SERVICE_TYPE_SHORT_SERVICE. For these reasons, it's considered best practice to implement the Service.onTimeout() callback.

The Service.onTimeout() callback doesn't exist on Android 13 and lower. If the same service runs on such devices, it doesn't receive a timeout, nor does it ANR. Make sure that your service stops as soon as it finishes the processing task, even if it hasn't received the Service.onTimeout() callback yet.

It's important to note that if the timeout of the shortService is not respected, the app will ANR even if it has other valid foreground services or other app lifecycle processes running.

If an app is visible to the user or satisfies one of the exemptions that allow foreground services to be started from the background, calling Service.StartForeground() again with the FOREGROUND_SERVICE_TYPE_SHORT_SERVICE parameter extends the timeout by another 3 minutes. If the app isn't visible to the user and doesn't satisfy one of the exemptions, any attempt to start another foreground service, regardless of type, causes a ForegroundServiceStartNotAllowedException.

If a user disables battery optimization for your app, it's still affected by the timeout of shortService FGS.

If you start a foreground service that includes the shortService type and another foreground service type, the system ignores the shortService type declaration. However, the service must still adhere to the prerequisites of the other declared types. For more information, see the Foreground services documentation.

特殊用途

要在清单中声明的前台服务类型

android:foregroundServiceType

specialUse

在清单中声明的权限

FOREGROUND_SERVICE_SPECIAL_USE

要传递给 startForeground() 的常量

FOREGROUND_SERVICE_TYPE_SPECIAL_USE

运行时前提条件

无

说明

涵盖其他前台服务类型未涵盖的所有有效前台服务用例。

除了声明 FOREGROUND_SERVICE_TYPE_SPECIAL_USE 前台服务类型之外，开发者还应在清单中声明用例。为此，他们会在 <service> 元素内指定 <property> 元素。这些值和相应的应用场景 。用途 您提供的案例均为自由形式，因此，您应确保提供足够的 提供相关信息，让审核者了解您为何需要使用 specialUse 类型。

<service android:name="fooService" android:foregroundServiceType="specialUse">
  <property android:name="android.app.PROPERTY_SPECIAL_USE_FGS_SUBTYPE"
      android:value="explanation_for_special_use"/>
</service>

系统豁免

Foreground service type to declare in manifest under

android:foregroundServiceType

systemExempted

Permission to declare in your manifest

FOREGROUND_SERVICE_SYSTEM_EXEMPTED

Constant to pass to startForeground()

FOREGROUND_SERVICE_TYPE_SYSTEM_EXEMPTED

Runtime prerequisites

None

Description

Reserved for system applications and specific system integrations, to continue to use foreground services.

To use this type, an app must meet at least one of the following criteria:

• Device is in demo mode state
• App is a Device Owner
• App is a Profiler Owner
• Safety Apps that have the ROLE_EMERGENCY role
• Device Admin apps
• Apps holding SCHEDULE_EXACT_ALARM or USE_EXACT_ALARM permission

• VPN apps (configured using Settings > Network & Internet > VPN)

  Otherwise, declaring this type causes the system to throw a ForegroundServiceTypeNotAllowedException.

使用前台服务类型时强制执行的 Google Play 政策

If your app targets Android 14 or higher, you'll need to declare your app's foreground service types in the Play Console's app content page (Policy > App content). For more information on how to declare your foreground service types in Play Console, see Understanding foreground service and full-screen intent requirements.