Thanks for answering.
I have verified that the code runs correctly. Everything works perfectly if the phone is on the active screen. A call is received, the volume is muted, check if you have to change or not change the volume, and do it correctly.
But if the phone has the screen off, the process does not work. First off the volume, it checks the caller, but below the volume is NOT active.
Also, if you have the screen off, I get this error in the log:
ProcessState dead: name=com.android.systemui pkg=com.android.keyguard uid=10007 common.name=com.android.systemui
android.util.Log$TerribleFailure: ProcessState dead: name=com.android.systemui pkg=com.android.keyguard uid=10007 common.name=com.android.systemui
at android.util.Log.wtf(Log.java:290)
at android.util.Slog.wtfStack(Slog.java:86)
at com.android.internal.app.ProcessStats$ProcessState.ensureNotDead(ProcessStats.java:2495)
at com.android.internal.app.ProcessStats$ProcessState.setState(ProcessStats.java:2593)
at com.android.internal.app.ProcessStats$ProcessState.setState(ProcessStats.java:2578)
at com.android.server.am.ActivityManagerService.setProcessTrackerState(ActivityManagerService.java:15348)
at com.android.server.am.ActivityManagerService.updateOomAdjLocked(ActivityManagerService.java:15722)
at com.android.server.am.ActivityStack.destroyActivityLocked(ActivityStack.java:2803)
at com.android.server.am.ActivityStack.finishCurrentActivityLocked(ActivityStack.java:2517)
at com.android.server.am.ActivityStackSupervisor.activityIdleInternalLocked(ActivityStackSupervisor.java:1906)
at com.android.server.am.ActivityStackSupervisor$ActivityStackSupervisorHandler.activityIdleInternal(ActivityStackSupervisor.java:2592)
at com.android.server.am.ActivityStackSupervisor$ActivityStackSupervisorHandler.handleMessage(ActivityStackSupervisor.java:2614)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at com.android.server.am.ActivityManagerService$AThread.run(ActivityManagerService.java:1870)
With what I think the problem stems from here. (maybe it has nothing to do ...)
I really am very concerned to read TerribleFailure ... had never had a terrible failure ...
Thank you for your atention.