미디어 플레이어 여러개의 트랙 동시에 일시정지하는법 질문입니다

Question

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import android.content.Intent; import android.media.MediaPlayer; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.Toast;   public class MainActivity extends AppCompatActivity {       MediaPlayer[] mediaPlayer = new MediaPlayer[3];       private Button sound1StartButton;     private Button sound2StartButton;     private Button sound3StartButton;     private Button sound1StopButton;     private Button sound2StopButton;     private Button sound3StopButton;       private Button playpauseButton;       private boolean isPlaying;       @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_main);           sound1StartButton = (Button) findViewById(R.id.sound1StartButton);         sound2StartButton = (Button) findViewById(R.id.sound2StartButton);         sound3StartButton = (Button) findViewById(R.id.sound3StartButton);         sound1StopButton = (Button) findViewById(R.id.sound1StopButton);         sound2StopButton = (Button) findViewById(R.id.sound2StopButton);         sound3StopButton = (Button) findViewById(R.id.sound3StopButton);           playpauseButton = (Button) findViewById(R.id.PlayPauseButton) ;           sound1StopButton.setVisibility(View.INVISIBLE);         sound2StopButton.setVisibility(View.INVISIBLE);         sound3StopButton.setVisibility(View.INVISIBLE);     }       public void onPlaySound(View v) {         switch (v.getId()) {             case R.id.sound1StartButton:                 mediaPlayer[0] = MediaPlayer.create(getApplicationContext(), R.raw.book);                   mediaPlayer[0].start();                   sound1StartButton.setVisibility(View.INVISIBLE);                 sound1StopButton.setVisibility(View.VISIBLE);                   playpauseButton.setText("Pause");                   isPlaying = true;                   break;               case R.id.sound2StartButton:                 mediaPlayer[1] = MediaPlayer.create(getApplicationContext(), R.raw.silhum);                   mediaPlayer[1].start();                   sound2StartButton.setVisibility(View.INVISIBLE);                 sound2StopButton.setVisibility(View.VISIBLE);                   playpauseButton.setText("Pause");                   isPlaying = true;                   break;                 case R.id.sound3StartButton:                 mediaPlayer[2] = MediaPlayer.create(getApplicationContext(), R.raw.sunburst);                   mediaPlayer[2].start();                   sound3StartButton.setVisibility(View.INVISIBLE);                 sound3StopButton.setVisibility(View.VISIBLE);                   playpauseButton.setText("Pause");                   isPlaying = true;                   break;           }     }       public void onStopSound(View v) {         switch (v.getId()) {             case R.id.sound1StopButton:                 //mediaPlayer = MediaPlayer.create(getApplicationContext(), R.raw.book);                   mediaPlayer[0].stop();                 //mediaPlayer.release();                   sound1StartButton.setVisibility(View.VISIBLE);                 sound1StopButton.setVisibility(View.INVISIBLE);                   playpauseButton.setText("Play");                   isPlaying = false;                   break;               case R.id.sound2StopButton:                 //mediaPlayer = MediaPlayer.create(getApplicationContext(), R.raw.silhum);                   mediaPlayer[1].stop();                 //mediaPlayer.release();                   sound2StartButton.setVisibility(View.VISIBLE);                 sound2StopButton.setVisibility(View.INVISIBLE);                   playpauseButton.setText("Play");                   isPlaying = false;                   break;               case R.id.sound3StopButton:                 //mediaPlayer = MediaPlayer.create(getApplicationContext(), R.raw.sunburst);                   mediaPlayer[2].stop();                 //mediaPlayer.release();                   sound3StartButton.setVisibility(View.VISIBLE);                 sound3StopButton.setVisibility(View.INVISIBLE);                   playpauseButton.setText("Play");                   isPlaying = false;                   break;         }     }       public void onPlayPause(View v) {         if (mediaPlayer == null) {             Toast.makeText(this, "재생 할 것이 없습니다", Toast.LENGTH_SHORT).show();         } else {             if (mediaPlayer.isPlaying()) {                 mediaPlayer.pause();                 playpauseButton.setText("Play");             } else {                 mediaPlayer.start();                 playpauseButton.setText("Pause");             }         }     } }

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if (mediaPlayer.isPlaying()) {                 mediaPlayer.pause();                 playpauseButton.setText("Play");             } else {                 mediaPlayer.start();                 playpauseButton.setText("Pause"); <<이 조건문을 어떻게 해야 트랙이 동시에 일시정지되고 일시정지된트랙만 재생시킬수 있을까요??

Answer 1

for(int i = 0; i < mediaPlayer.length;i++) {
    MediaPlayer currentMediaPlayer = mediaPlayer[i];
    if (currentMediaPlayer.isPlaying()) {
        currentMediaPlayer.pause();
    } else {
        currentMediaPlayer.start();
    }
}

if(playpauseButton.getText().toString().equal("Play") ) {
    playpauseButton.setText("Pause");
} else {
    playpauseButton.setText("Play");
}