从锁定屏幕开始活动时无声音 [英] No sound when the Activity starts from Lock Screen

问题描述

这似乎是一个奇怪的问题.我正在使用AlarmManager设置带有自定义音频轨道的警报.活动开始并正常播放音乐，但是当我锁定手机时，活动开始但音频没有播放.

This seems to be a strange issue. I am using AlarmManager to set a alarm with custom audio track. The activity start and plays the music normally, but when i lock the phone the activity starts but the audio is not playing.

这是我正在使用的代码.

Here is the code that i am using it.

onCreate方法

The onCreate Method

PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
    mWakelock = pm.newWakeLock(PowerManager.FULL_WAKE_LOCK|PowerManager.ACQUIRE_CAUSES_WAKEUP,"My Wake Log");
    mWakelock.acquire();
    this.requestWindowFeature(Window.FEATURE_NO_TITLE);
    this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD | 
            WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED | 
            WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON,
            WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD | 
            WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED | 
            WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON);
    setContentView(R.layout.sampleAlarm);
            mediplayer.setAudioStreamType(AudioManager.STREAM_MUSIC);  
            mediplayer.setDataSource(Environment.getExternalStorageDirectory()+"track1/1.mp3");                     
                            mediplayer.setVolume(100,100);
            mediplayer.prepare();
            mediplayer.setLooping(true);
            mediplayer.start();

任何想法我在做什么错.

Any idea what i am doing wrong.

推荐答案

我能够弄清楚.并解决了问题.我在onStop和onPause方法中添加了Mediaplayer版本，当手机从锁定模式唤醒时，由于某种原因，它反复触发onStop和onPause.因此，我在onStop和onPause中添加了isFinishing以确保活动实际上已停止.

I was able to figure out. And solved the problem. I had added a mediaplayer release in onStop and onPause method, and when the phone wakes up from the lock mode it was repetitively triggering onStop and onPause for some reason. So i added a isFinishing in onStop and onPause to make sure the activity is actually stopped.

if(this.isFinishing(){
   mediplayer.stop();
   mediplayer.release();
}

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