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相应的服务类型。这意味着，您必须在应用清单中声明服务类型，并请求与该类型相符的前台服务权限（除了请求 FOREGROUND_SERVICE 权限之外）。此外，根据前台服务类型，您可能必须在启动服务之前请求运行时权限。

注意： 在许多情况下，您可以使用专门构建的 API，而无需创建特定类型的前台服务。如果可以使用专用 API，那么它们通常比创建前台服务更好。这些 API 列在相应前台服务类型中的替代方案部分。

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

Note: The CAMERA runtime permission is subject to while-in-use restrictions. For this reason, you cannot create a camera foreground service while your app is in the background and you cannot launch a camera foreground service from a BOOT_COMPLETED receiver, with a few exceptions. For more information, see Restrictions on starting foreground services that need while-in-use permissions.

Description

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

连接的设备

要在其清单中声明的前台服务类型

android:foregroundServiceType

connectedDevice

在清单中声明的权限

FOREGROUND_SERVICE_CONNECTED_DEVICE

要传递给 startForeground() 的常量

FOREGROUND_SERVICE_TYPE_CONNECTED_DEVICE

运行时前提条件

必须至少满足以下其中一个条件：

• 在清单中至少声明以下其中一项权限：

  • CHANGE_NETWORK_STATE
  • CHANGE_WIFI_STATE
  • CHANGE_WIFI_MULTICAST_STATE
  • NFC
  • TRANSMIT_IR

• 请求并获得以下至少一项运行时权限：

  • BLUETOOTH_CONNECT
  • BLUETOOTH_ADVERTISE
  • BLUETOOTH_SCAN
  • UWB_RANGING

• 调用 UsbManager.requestPermission()

说明

与需要蓝牙、NFC、IR、USB 或网络连接的外部设备进行互动。

注意 ：如果您的应用执行投影或远程消息传递操作，请改用相应的媒体投影或远程消息传递类型。

替代方案

如果您的应用需要持续将数据传输到外部设备，请考虑改用配套设备管理器。使用配套设备在线状态 API 帮助您的应用在配套设备在范围内时保持运行。

如果您的应用需要扫描蓝牙设备，请考虑改用 Bluetooth Scanner API。

数据同步

Foreground service type to declare in manifest under

android:foregroundServiceType

dataSync

Permission to declare in your manifest

FOREGROUND_SERVICE_DATA_SYNC

Constant to pass to startForeground()

FOREGROUND_SERVICE_TYPE_DATA_SYNC

Runtime prerequisites

None

Description

Data transfer operations, such as the following:

• Data upload or download
• Backup-and-restore operations
• Import or export operations
• Fetch data
• Local file processing
• Transfer data between a device and the cloud over a network

Note: Apps that target Android 15 or higher are not allowed to launch a data sync foreground service from a BOOT_COMPLETED broadcast receiver. For more information, see Restrictions on BOOT_COMPLETED broadcast receivers launching foreground services.

Alternatives

See Alternatives to data sync foreground services for detailed information.

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（API 35 及更低版本中）
  • READ_HEART_RATE
  • READ_SKIN_TEMPERATURE
  • READ_OXYGEN_SATURATION
  • ACTIVITY_RECOGNITION

注意： BODY_SENSORS 和基于传感器的读取运行时权限受“在使用时”限制。因此，除非您已获得 BODY_SENSORS_BACKGROUND（API 级别 33 到 API 级别 35）或 READ_HEALTH_DATA_IN_BACKGROUND（API 级别 36）权限，否则您无法创建在应用处于后台运行时使用身体传感器的 health 前台服务。如需了解详情，请参阅与启动需要“使用时”权限的前台服务相关的限制。

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

Note: In order to check that the user has enabled location services as well as granted access to the runtime permissions, use PermissionChecker#checkSelfPermission()

Note: The location runtime permissions are subject to while-in-use restrictions. For this reason, you cannot create a location foreground service while your app is in the background, unless you've been granted the ACCESS_BACKGROUND_LOCATION runtime permission. For more information, see Restrictions on starting foreground services that need while-in-use permissions.

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

要在清单中声明的前台服务类型，位于

android:foregroundServiceType

mediaPlayback

要在清单中声明的权限

FOREGROUND_SERVICE_MEDIA_PLAYBACK

要传递给 startForeground() 的常量

FOREGROUND_SERVICE_TYPE_MEDIA_PLAYBACK

运行时前提条件

无

说明

在后台继续播放音频或视频。在 Android TV 上支持数字视频录制 (DVR) 功能。

注意： 以 Android 15 或更高版本为目标平台的应用不得从 BOOT_COMPLETED 广播接收器启动媒体播放前台服务。如需了解详情，请参阅与 BOOT_COMPLETED 广播接收器启动前台服务相关的限制。

替代方案

如果您要显示画中画视频，请使用画中画模式。

仍在处理中的媒体内容

Foreground service type to declare in manifest under

android:foregroundServiceType

mediaProcessing

Permission to declare in your manifest

FOREGROUND_SERVICE_MEDIA_PROCESSING

Constant to pass to startForeground()

FOREGROUND_SERVICE_TYPE_MEDIA_PROCESSING

Runtime prerequisites

None

Description

Service for performing time-consuming operations on media assets, like converting media to different formats. The system allows this service a limited time to run; under normal circumstances, this time limit would be 6 hours out of every 24. (This limit is shared by all of an app's mediaProcessing foreground services.)

Your app should manually stop the media processing service in the following scenario:

• When the transcoding operation finishes or reaches a failure state, have the service call Service.stopForeground() and Service.stopSelf() to stop the service completely.

If the timeout period is reached, the system calls the service's Service.onTimeout(int, int) method. At this time, the service has a few seconds to call Service.stopSelf(). If the service does not call Service.stopSelf(), an ANR will occur with this error message: "A foreground service of <fgs_type> did not stop within its timeout: <component_name>".

Note: Service.onTimeout(int, int) is not available on Android 14 or lower. On devices running those versions, if a media processing service reaches the timeout period, the system immediately caches the app. For this reason, your app shouldn't wait to get a timeout notification. Instead, it should terminate the foreground service or change it to a background service as soon as appropriate.

媒体投影

要在清单中声明的前台服务类型，位于

android:foregroundServiceType

mediaProjection

要在清单中声明的权限

FOREGROUND_SERVICE_MEDIA_PROJECTION

要传递给 startForeground() 的常量

FOREGROUND_SERVICE_TYPE_MEDIA_PROJECTION

运行时前提条件

在启动前台服务之前，调用 createScreenCaptureIntent() 方法。这样做会向用户显示权限通知；用户必须授予权限，您才能创建服务。

创建前台服务后，您可以调用 MediaProjectionManager.getMediaProjection()。

说明

使用 MediaProjection API 将内容投影到非主要显示屏或外部设备。这些内容不必全都为媒体内容。

注意： 以 Android 15 或更高版本为目标平台的应用不得从 BOOT_COMPLETED 广播接收器启动媒体投影前台服务。如需了解详情，请参阅与 BOOT_COMPLETED 广播接收器启动前台服务相关的限制。

替代方案

如需将媒体内容流式传输到其他设备，请使用 Google Cast SDK。

麦克风

要在清单中声明的前台服务类型，位于

android:foregroundServiceType

microphone

要在清单中声明的权限

FOREGROUND_SERVICE_MICROPHONE

要传递给 startForeground() 的常量

FOREGROUND_SERVICE_TYPE_MICROPHONE

运行时前提条件

请求并被授予 RECORD_AUDIO 运行时权限。

注意： RECORD_AUDIO 运行时权限受“使用时”限制。因此，当应用在后台运行时，您无法创建 microphone 前台服务，也无法从 BOOT_COMPLETED 接收器启动 microphone 前台服务，但有少数例外情况。如需了解详情，请参阅与启动需要“使用时”权限的前台服务相关的限制。

说明

在后台继续捕获麦克风内容，例如录音器或通信应用。

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.

Note: Apps that target Android 15 or higher are not allowed to launch a phone call foreground service from a BOOT_COMPLETED broadcast receiver. For more information, see Restrictions on BOOT_COMPLETED broadcast receivers launching foreground services.

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

要在其清单中声明的前台服务类型

android:foregroundServiceType

shortService

在清单中声明的权限

无

要传递给 startForeground() 的常量

FOREGROUND_SERVICE_TYPE_SHORT_SERVICE

运行时前提条件

无

说明

快速完成不可中断或推迟的关键工作。

这种类型有一些独特的特征：

• 只能持续运行一小段时间（大约 3 分钟）。
• 不支持粘性前台服务。
• 无法启动其他前台服务。
• 不需要类型专用权限，不过它仍需要 FOREGROUND_SERVICE 权限。
• 只有当应用当前有资格启动新的前台服务时，shortService 才能更改为另一种服务类型。
• 前台服务可以随时将其类型更改为 shortService，届时超时期限将开始。

shortService 的超时时间从调用 Service.startForeground() 开始算起。应用应在发生超时之前调用 Service.stopSelf() 或 Service.stopForeground()。否则，系统会调用新的 Service.onTimeout()，让应用有机会调用 stopSelf() 或 stopForeground() 来停止其服务。

调用 Service.onTimeout() 后的短时间内，应用会进入缓存状态，并且不再被视为处于前台，除非用户正在主动与应用互动。应用缓存一小段时间后，服务还未停止，该应用会收到 ANR 消息。ANR 消息提及 FOREGROUND_SERVICE_TYPE_SHORT_SERVICE。出于这些原因，实现 Service.onTimeout() 回调被视为一种最佳实践。

Android 13 及更低版本中不存在 Service.onTimeout() 回调。如果同一服务在此类设备上运行，则不会出现超时，也不会发生 ANR。确保您的服务在完成处理任务后立即停止，即使它尚未收到 Service.onTimeout() 回调也是如此。

请务必注意，如果未遵循 shortService 的超时设置，即使应用还有其他有效的前台服务或其他应用生命周期进程，应用也会遇到 ANR。

如果应用对用户可见，或满足允许从后台启动前台服务的某一豁免条件，则使用 FOREGROUND_SERVICE_TYPE_SHORT_SERVICE 参数再次调用 Service.StartForeground() 会将超时时间再延长 3 分钟。如果应用对用户不可见且不满足其中一个豁免条件，则尝试启动其他前台服务（无论其类型如何）都会导致 ForegroundServiceStartNotAllowedException。

即使用户为您的应用停用电池优化功能，仍然会受到 shortService FGS 的影响。

如果您启动包含 shortService 类型和另一个前台服务类型的前台服务，系统会忽略 shortService 类型声明。不过，该服务仍必须遵守其他声明类型的前提条件。如需了解详情，请参阅前台服务文档。

特殊用途

Foreground service type to declare in manifest under

android:foregroundServiceType

specialUse

Permission to declare in your manifest

FOREGROUND_SERVICE_SPECIAL_USE

Constant to pass to startForeground()

FOREGROUND_SERVICE_TYPE_SPECIAL_USE

Runtime prerequisites

None

Description

Covers any valid foreground service use cases that aren't covered by the other foreground service types.

In addition to declaring the FOREGROUND_SERVICE_TYPE_SPECIAL_USE foreground service type, developers should declare use cases in the manifest. To do so, they specify the <property> element within the <service> element. These values and corresponding use cases are reviewed when you submit your app in the Google Play Console. The use cases you provide are free-form, and you should make sure to provide enough information to let the reviewer see why you need to use the specialUse type.

<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

如果您的应用以 Android 14 或更高版本为目标平台，您需要在 Play 管理中心的“应用内容”页面（政策 > 应用内容）中声明应用的前台服务类型。如需详细了解如何在 Play 管理中心内声明前台服务类型，请参阅了解前台服务和全屏 intent 要求。