如何播放音频文件时，某个按钮从以前的activiy点击

Question

我作出了语言的应用程序为我的学习目的和实践中的Android 我想存储阵列中的音频教训和我有一个活动当我按下例如音频1弹窗是一项新的活动与玩家（AudioPopup.java） 但我dont't问题每节课要做出一个弹出播放某些音频，每节课 我需要的是认识到这按钮被按下，打开我创造了AudioPopup和播放MP3一定

AudioPopup代码

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(); 


     } 
    } 

} 

这只能播放音频，我插不承认从第一活动按钮从

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); 

    } 
}); 

我有许多按钮按在每节课每个音频他们是24课居然排:(

Answer 1

你需要做的是通过从第一个活动 和负载所选择的课程起到第二个

适当的音频您可以识别哪个按钮（教训）通过多种方式玩什么，

简单的一个是数字1,2,3 ......每个数字代表课程 或者您可以传递音频文件的资源ID并在下一个活动中播放 此选项更好，因为您不必使用如果在下一个活动中声明了解索引4代表的是哪一课。

所以在这里我们去

为音频1按钮，通过第1课

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); 

    } 
}); 

和音频2按钮的资源ID，通过第2课

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); 

    } 
}); 

的资源ID现在，在第二活动，获取此传递的值，并播放音频。

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); 

你可以通过创建启动弹出活性的方法重构代码（如果你有太多的按钮） ，和的onClick通过音频资源称它为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会是

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