树莓派4B上Android 14连接DHU时Android Auto启动失败求助

问题详情 #

• 硬件：树莓派4B
• 系统：Konstakang构建的Android14版本，仅安装基础LiteGapps，无第三方应用
• 前置状态：已开启开发者模式，Head Unit Server运行正常，日志可正常输出
• 故障现象：通过USB使用DHU 2.0连接时，终端停留在Attached!状态，DHU显示“等待手机...”；重新连接日志后出现如下致命错误：

2024-09-07 11:51:52.609 2791-3413 GH.CrashHandler pid-2791
E GH FATAL EXCEPTION: CarService
Process: com.google.android.projection.gearhead:car
PID: 2791

java.lang.IllegalStateException: 无法向CDM注册车辆
at hhs.m(SourceFile:131)
at hhs.c(SourceFile:75)
at obg.run(SourceFile:24)
at android.os.Handler.handleCallback(Handler.java:959)
at android.os.Handler.dispatchMessage(Handler.java:100)
at android.os.Looper.loopOnce(Looper.java:232)
at android.os.Looper.loop(Looper.java:317)
at android.os.HandlerThread.run(Handler.java:85)
Caused by: java.util.concurrent.ExecutionException:
java.lang.SecurityException: 应用必须持有android.permission.REQUEST_COMPANION_PROFILE_AUTOMOTIVE_PROJECTION权限，才能与拥有android.app.role.SYSTEM_AUTOMOTIVE_PROJECTION配置文件的设备建立关联。
at cyt.k(SourceFile:21)
at cyt.get(SourceFile:20)
at cyy.get(SourceFile:2)
at hhs.m(SourceFile:39)
at hhs.c(SourceFile:75)
at obg.run(SourceFile:24)
at android.os.Handler.handleCallback(Handler.java:959)
at android.os.Handler.dispatchMessage(Handler.java:100)
at android.os.Looper.loopOnce(Looper.java:232)
at android.os.Looper.loop(Looper.java:317)
at android.os.HandlerThread.run(Handler.java:85)
Caused by: java.lang.SecurityException: 应用必须持有android.permission.REQUEST_COMPANION_PROFILE_AUTOMOTIVE_PROJECTION权限，才能与拥有android.app.role.SYSTEM_AUTOMOTIVE_PROJECTION配置文件的设备建立关联。
at android.os.Parcel.createExceptionOrNull(Parcel.java:3183)
at android.os.Parcel.createException(Parcel.java:3167)
at android.os.Parcel.readException(Parcel.java:3150)
at android.os.Parcel.readException(Parcel.java:3092)
at android.companion.ICompanionDeviceManager$Stub$Proxy.associate(ICompanionDeviceManager.java:878)
at android.companion.CompanionDeviceManager.associate(CompanionDeviceManager.java:441)
at ew$$ExternalSyntheticApiModelOutline1.m(D8$$SyntheticClass:60)
at hfh.a(SourceFile:77)
at hhk.a(SourceFile:106)
at yf.d(SourceFile:19)
at hhs.m(SourceFile:27)
at hhs.c(SourceFile:75)
at obg.run(SourceFile:24)
at android.os.Handler.handleCallback(Handler.java:959)
at android.os.Handler.dispatchMessage(Handler.java:100)
at android.os.Looper.loopOnce(Looper.java:232)
at android.os.Looper.loop(Looper.java:317)
at android.os.HandlerThread.run(Handler.java:85)
Caused by: android.os.RemoteException: Remote stack trace:
at com.android.server.companion.utils.PermissionsUtils.enforcePermissionForRequestingProfile(PermissionsUtils.java:105)
at com.android.server.companion.utils.PermissionsUtils.enforcePermissionForCreatingAssociation(PermissionsUtils.java:83)
at com.android.server.companion.AssociationRequestsProcessor.processNewAssociationRequest(AssociationRequestsProcessor.java:171)
at com.android.server.companion.CompanionDeviceManagerService$CompanionDeviceManagerImpl.associate(CompanionDeviceManagerService.java:713)
at android.companion.ICompanionDeviceManager$Stub.onTransact(ICompanionDeviceManager.java:392)

解决方案 #

问题核心是Android Auto的CarService进程缺少必要的系统权限，可按以下步骤修复：

• 用ADB连接树莓派的Android系统，执行命令授予权限：

  adb shell pm grant com.google.android.projection.gearhead android.permission.REQUEST_COMPANION_PROFILE_AUTOMOTIVE_PROJECTION
  

• 若上述命令无效，尝试关联系统角色权限：

  adb shell role add com.google.android.projection.gearhead android.app.role.SYSTEM_AUTOMOTIVE_PROJECTION
  

• 重启Head Unit Server或直接重启树莓派，再尝试连接DHU

如果以上方法无效，说明Konstakang的ROM构建未默认配置该权限，需修改ROM的权限配置文件（如privapp-permissions-google.xml）后重新编译刷入。

内容的提问来源于stack exchange，提问作者user7880543