Android 11 Sending non-protected broadcast问题分析

带android:sharedUserId=“android.uid.system” 发送广播时，会出现 Sending non-protected broadcast 异常提醒；

11-19 08:26:47.436  1380  1407 W ContextImpl: Calling a method in the system process without a qualified user: android.app.ContextImpl.sendBroadcast:1111 android.content.ContextWrapper.sendBroadcast:468 
...
11-19 08:26:47.438   382   975 E ActivityManager: Sending non-protected broadcast com.login.progress from system 1380:com.android.bootguide/1000 pkg com.android.bootguide
11-19 08:26:47.438   382   975 E ActivityManager: java.lang.Throwable
11-19 08:26:47.438   382   975 E ActivityManager: 	at com.android.server.am.ActivityManagerService.checkBroadcastFromSystem(ActivityManagerService.java:15910)
11-19 08:26:47.438   382   975 E ActivityManager: 	at com.android.server.am.ActivityManagerService.broadcastIntentLocked(ActivityManagerService.java:16585)
11-19 08:26:47.438   382   975 E ActivityManager: 	at com.android.server.am.ActivityManagerService.broadcast