setOnCompletionListener問題

Question

嘿傢伙我完全陌生的Java，試圖完成我的大學第一個項目。我想通過設置OnCompletionListener來完成代碼，將聲音設置爲null。因此，它看起來像這樣：

package com.example.alaiborys.newfuckingshit; 

public class campfire extends AppCompatActivity { 
MediaPlayer campfiresound; 
int paused; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_campfire); 
} 

public void play(View view) { 
    if (campfiresound == null) { 
     campfiresound = MediaPlayer.create(this, R.raw.campfire); 
     campfiresound.start(); 
    } 
    else if(!campfiresound.isPlaying()) 
    { 
     campfiresound.seekTo(paused); 
     campfiresound.start(); 
    } 
} 

public void stop(View view) { 
    campfiresound.release(); 
    campfiresound = null; 
} 

public void pause(View view) { 
    campfiresound.pause(); 
    paused = campfiresound.getCurrentPosition(); 
} 
} 

所以，我想補充OnCompletionListener():但不知道放在哪裏以及如何編寫它，任何想法？

Answer 1

嗯，這是很容易的......你有一個媒體播放器對象campfiresound 所以你需要regisdter接口OnCompletionListener

campfiresound.setOnCompletionListener(new MediaPlayer.OnCompletionListener() { 
    public void onCompletion(MediaPlayer mp) { 
     //toast...am done!! 
    } 
});