想要在用戶點擊選項菜單項

Question

時只播放一次音頻我想單擊選項菜單項時只播放一次音頻。當用戶下次點擊相同的項目時，音頻將會停止，我想，但找不到任何解決方案幫助我解決我的問題。這是我的代碼。當用戶交替點擊該項目時，音頻將播放並交替停止。

public boolean onCreateOptionsMenu(Menu menu) 
{ 
    // TODO Auto-generated method stub 
    MenuInflater menuInflater= getMenuInflater(); 
    menuInflater.inflate(R.menu.menu, menu); 
    return true; 
} 
@Override 
public boolean onOptionsItemSelected(MenuItem item) 
{ 
    if (item.getItemId()== R.id.item1) 
    { 
     Intent intent = new Intent(AthravaShirshaActivity.this, EnglishExpln.class); 
     startActivity(intent); 
    } 
    if(item.getItemId()== R.id.item2) 
    { 
     MediaPlayer mp= MediaPlayer.create(AthravaShirshaActivity.this, R.raw.mantra); 
     mp.start(); 
     mp.setLooping(false); 
     mp.setOnCompletionListener(new OnCompletionListener() 
     { 
      @Override 
      public void onCompletion(MediaPlayer mp) 
      { 
       mp.stop(); 
      } 
     }); 
     item.setIcon(android.R.drawable.ic_media_pause); 
    } 
    return true; 
} 

Answer 1

可以使mp公衆和MediaPlayer mp= MediaPlayer.create(AthravaShirshaActivity.this, R.raw.mantra);

現在onOptionsItemSelected

if(mp.isPlaying()) 
     { 
      mp.stop(); 
     mp=null; 
      item.setIcon(android.R.drawable.ic_media_play); 
     } 
     else 
     { 
        mp= MediaPlayer.create(AthravaShirshaActivity.this, R.raw.mantra); 
      mp.start(); 
       mp.setLooping(false); 
       mp.setOnCompletionListener(new OnCompletionListener() 
       { 
        @Override 
        public void onCompletion(MediaPlayer mp) 
        { 
         mp.stop(); 
        } 
       }); 
       item.setIcon(android.R.drawable.ic_media_pause); 
     }