如何播放音頻文件時，某個按鈕從以前的activiy點擊

Question

我作出了語言的應用程序爲我的學習目的和實踐中的Android 我想存儲陣列中的音頻教訓和我有一個活動當我按下例如音頻1彈窗是一項新的活動與玩家（AudioPopup.java） 但我dont't問題每節課要做出一個彈出播放某些音頻，每節課 我需要的是認識到這按鈕被按下，打開我創造了AudioPopup和播放MP3一定

AudioPopup代碼

public class AudioPopup extends AppCompatActivity { 

    SeekBar seek_bar; 
    ImageView play_button, pause_button; 
    MediaPlayer player; 
    ImageView exitPlayer; 
    Handler seekHandler = new Handler(); 
    private int [] audioFiles; 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.audio_popup); 

     setFinishOnTouchOutside(false); 
     audioFiles = new int [] {R.raw.lesson1-1,R.raw.lesson1-2,R.raw.lesson1-3,R.raw.lesson1-4}; 


     getInit(); 
     seekUpdation(); 

     exitPlayer = (ImageView) findViewById(R.id.audio_exit_1); 
     exitPlayer.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       finish(); 
       player.stop(); 

      } 
     }); 

    } 

    public void getInit() { 
     seek_bar = (SeekBar) findViewById(R.id.seekbar_1); 
     play_button = (ImageView) findViewById(R.id.audio_play_1); 
     pause_button = (ImageView) findViewById(R.id.audio_stop_1); 

     play_button.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 


       PlayAudio(); 

      } 
     }); 
     pause_button.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       player.stop(); 
       releaseMediaPlayer(); 
       player = MediaPlayer.create(AudioPopup.this, lesson1-1); 
       play_button.setImageResource(R.drawable.ic_play_circle_filled_black_48dp); 
      } 
     }); 

     player = MediaPlayer.create(this, R.raw.l01_audiotraining_grammatik_01); 
     seek_bar.setMax(player.getDuration()); 
     seek_bar.setOnTouchListener(new View.OnTouchListener() { 
      @Override 
      public boolean onTouch(View v, MotionEvent event) { 
       seekChange(v); 
       return false; 
      } 
     }); 


    } 

    Runnable run = new Runnable() { 
     @Override 
     public void run() { 
      seekUpdate(); 

     } 
    }; 

public void seekUpdate() { 


    seek_bar.setProgress(player.getCurrentPosition()); 
    seekHandler.postDelayed(run, 1000); 



} 

//event handler for the progress of seek bar 
private void seekChange(View view) { 
    if (player.isPlaying()) { 
     SeekBar sb = (SeekBar) view; 
     player.seekTo(sb.getProgress()); 

    } 

} 

private void releaseMediaPlayer() { 
    // If the media player is not null, then it may be currently playing a sound. 
    if (player != null) { 
     // Regardless of the current state of the media player, release its resources 
      // because we no longer need it. 
      player.release(); 

      // Set the media player back to null. For our code, we've decided that 
      // setting the media player to null is an easy way to tell that the media player 
      // is not configured to play an audio file at the moment. 
      player = null; 
     } 
    } 

    private void PlayAudio(){ 

     if (player == null) { 
      player = MediaPlayer.create(AudioPopup.this,R.raw.lesson1-1); 
     } 

     if (player.isPlaying()) { 

      player.pause(); 
      play_button.setImageResource(R.drawable.ic_play_circle_filled_black_48dp); 
      try { 
       player.prepare(); 
      } catch (IllegalStateException e) { 

       e.printStackTrace(); 
      } catch (IOException e) { 
       e.printStackTrace(); 
      } 

     } else { 


      play_button.setImageResource(R.drawable.ic_pause_circle_filled_black_48dp); 
      player.start(); 


     } 
    } 

} 

這隻能播放音頻，我插不承認從第一活動按鈕從

audio1 = (ImageView) popupView.findViewById(R.id.lesson1_audio_gramar_1); 
assert audio1 != null; 
audio1.setOnClickListener(new View.OnClickListener() { 
    @Override 
    public void onClick(View v) { 
     Intent audio_intent = new Intent(getApplicationContext(), AudioPopup.class); 
     startActivity(audio_intent); 

    } 
}); 

我有許多按鈕按在每節課每個音頻他們是24課居然排:(

Answer 1

你需要做的是通過從第一個活動 和負載所選擇的課程起到第二個

適當的音頻您可以識別哪個按鈕（教訓）通過多種方式玩什麼，

簡單的一個是數字1,2,3 ......每個數字代表課程 或者您可以傳遞音頻文件的資源ID並在下一個活動中播放 此選項更好，因爲您不必使用如果在下一個活動中聲明瞭解索引4代表的是哪一課。

所以在這裏我們去

爲音頻1按鈕，通過第1課

audio1.setOnClickListener(new View.OnClickListener() { 
    @Override 
    public void onClick(View v) { 
     Intent audio_intent = new Intent(getApplicationContext(), AudioPopup.class); 
     audio_intent.putExtra("lesson_res_id", R.raw.lesson1-1); 
     startActivity(audio_intent); 

    } 
}); 

和音頻2按鈕的資源ID，通過第2課

audio2.setOnClickListener(new View.OnClickListener() { 
    @Override 
    public void onClick(View v) { 
     Intent audio_intent = new Intent(getApplicationContext(), AudioPopup.class); 
     audio_intent.putExtra("lesson_res_id", R.raw.lesson2-2); 
     startActivity(audio_intent); 

    } 
}); 

的資源ID現在，在第二活動，獲取此傳遞的值，並播放音頻。

int lessonResId = getIntent().getIntExtra("lesson_res_id", -100); //-100 is default, means the key 'lesson_res_id' was not found in extras bundle 
playAudio(lessonResId); 

你可以通過創建啓動彈出活性的方法重構代碼（如果你有太多的按鈕） ，和的onClick通過音頻資源稱它爲ID

private void openPopupActivity(int resId){ 
    Intent audio_intent = new Intent(getApplicationContext(), AudioPopup.class); 
    audio_intent.putExtra("lesson_res_id", resId); 
    startActivity(audio_intent); 
} 

和的onClick會是

audio2.setOnClickListener(new View.OnClickListener() { 
    @Override 
    public void onClick(View v) { 
     openPopupActivity(R.raw.lesson2-2); 
    } 
});