1.  frameworks/base/services/core/java/com/android/server/notification/NotificationManagerService.java disableNotificationEffects()中，注掉 /* if (mCallState != TelephonyManager.CALL_STATE_IDLE && !mZenModeHelper.isCall(record)) { return "callState"; } */  2.  frameworks/av/services/audiopolicy/AudioPolicyManager.cpp setStreamMute()中开头，添加 if(stream == AUDIO_STREAM_NOTIFICATION) { on = false; }