指を上下にスライドさせるときにメディアプレイヤーのサウンドを増減するには？

Question

私はアンドロイド開発には新しく、現在はシンプルな音楽プレーヤーアプリを開発中です。ここで問題となるのは、メインの音楽プレーヤーの操作で指をスライドさせると、音楽プレーヤーの音量を増減する方法です。誰もがこれらのロジックを知っている場合

これは、このために私を助けてください、私の音楽プレーヤーフラグメント

public class Player extends Fragment implements WheelModel.Listener,MediaPlayer.OnCompletionListener,SeekBar.OnSeekBarChangeListener{ 

private ImageButton btnPlay; 
private ImageButton btnForward; 
private ImageButton btnBackward; 
private ImageButton btnNext; 
private ImageButton btnPrevious; 
private ImageButton btnRepeat; 
private ImageButton btnShuffle; 
private SeekBar songProgressBar; 
private TextView songTitleLabel; 
private TextView songCurrentDurationLabel; 
private TextView songTotalDurationLabel; 
// Media Player 
public static MediaPlayer mp,mp2; 
VisualizerView mVisualizerView; 
SliderView sl; 
private Visualizer mVisualizer; 
// Handler to update UI timer, progress bar etc,. 
private Handler mHandler = new Handler();; 
private SongsManager songManager; 
private Utilities utils; 
private int seekForwardTime = 5000; // 5000 milliseconds 
private int seekBackwardTime = 5000; // 5000 milliseconds 
private int currentSongIndex = 0; 
private boolean isShuffle = false; 
private boolean isRepeat = false; 
private ArrayList<SongModel> songsList = new ArrayList<SongModel>(); 
int songIndex; 
AudioManager audioManager; 
SongAdapter songAdapter; 

public Player(int position) { 
    songIndex = position; 
} 

public Player() { 

} 


    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, 
      Bundle savedInstanceState) { 

     View android = inflater.inflate(R.layout.player, container, false); 
     ClickWheel wheel = (ClickWheel) android.findViewById(R.id.wheel); 
     wheel.getModel().addListener(this); 
     return android; 

    } 
@Override 
public void onViewCreated(View v, Bundle savedInstanceState) { 
    super.onViewCreated(v, savedInstanceState); 

    btnPlay = (ImageButton)getView().findViewById(R.id.btnPlay); 
    btnForward = (ImageButton) getView().findViewById(R.id.btnForward); 
    btnBackward = (ImageButton) getView().findViewById(R.id.btnBackward); 
    btnNext = (ImageButton) getView().findViewById(R.id.btnNext); 
    btnPrevious = (ImageButton) getView().findViewById(R.id.btnPrevious); 
    btnRepeat = (ImageButton) getView().findViewById(R.id.btnRepeat); 
    btnShuffle = (ImageButton) getView().findViewById(R.id.btnShuffle); 
    songProgressBar = (SeekBar) getView().findViewById(R.id.songProgressBar); 
    songTitleLabel = (TextView) getView().findViewById(R.id.songTitle); 
    songTitleLabel.setSelected(true); 
    songCurrentDurationLabel = (TextView) getView().findViewById(R.id.songCurrentDurationLabel); 
    songTotalDurationLabel = (TextView) getView().findViewById(R.id.songTotalDurationLabel); 


    mp = new MediaPlayer(); 

    songManager = new SongsManager(); 
    utils = new Utilities(); 

    songProgressBar.setOnSeekBarChangeListener(this); 
    mp.setOnCompletionListener(this); 
    songsList = songManager.getPlayList(); 

    if (songIndex == 0) { 
     playSong(0); 
    } else { 
     playSong(songIndex); 
    } 
    btnPlay.setOnClickListener(new View.OnClickListener() { 

     @Override 
     public void onClick(View arg0) { 
      // check for already playing 
      if (mp.isPlaying()) { 
       if (mp != null) { 
        mp.pause(); 
        btnPlay.setImageResource(R.drawable.btn_play); 
       } 
      } else { 
       // Resume song 
       if (mp != null) { 
        mp.start(); 
        btnPlay.setImageResource(R.drawable.btn_pause); 
       } 
      } 

     } 
    }); 
    btnForward.setOnClickListener(new View.OnClickListener() { 

     @Override 
     public void onClick(View arg0) { 
      int currentPosition = mp.getCurrentPosition(); 
      if(currentPosition + seekForwardTime <= mp.getDuration()){ 
       mp.seekTo(currentPosition + seekForwardTime); 
      }else{ 
       mp.seekTo(mp.getDuration()); 
      } 
     } 
    }); 
    btnBackward.setOnClickListener(new View.OnClickListener() { 

     @Override 
     public void onClick(View arg0) { 
      int currentPosition = mp.getCurrentPosition(); 
      if(currentPosition - seekBackwardTime >= 0){ 
       mp.seekTo(currentPosition - seekBackwardTime); 
      }else{ 
       mp.seekTo(0); 
      } 

     } 
    }); 
    btnNext.setOnClickListener(new View.OnClickListener() { 

     @Override 
     public void onClick(View arg0) { 
      if(currentSongIndex < (songsList.size() - 1)){ 
       playSong(currentSongIndex + 1); 
       currentSongIndex = currentSongIndex + 1; 
      }else{ 
       playSong(0); 
       currentSongIndex = 0; 
      } 

     } 
    }); 
    btnPrevious.setOnClickListener(new View.OnClickListener() { 

     @Override 
     public void onClick(View arg0) { 
      if(currentSongIndex > 0){ 
       playSong(currentSongIndex - 1); 
       currentSongIndex = currentSongIndex - 1; 
      }else{ 
       playSong(songsList.size() - 1); 
       currentSongIndex = songsList.size() - 1; 
      } 

     } 
    }); 
    btnRepeat.setOnClickListener(new View.OnClickListener() { 

     @Override 
     public void onClick(View arg0) { 
      if(isRepeat){ 
       isRepeat = false; 
       Toast.makeText(getActivity().getApplicationContext(), "Repeat is OFF", Toast.LENGTH_SHORT).show(); 
       btnRepeat.setImageResource(R.drawable.btn_repeat); 
      }else{ 
       isRepeat = true; 
       Toast.makeText(getActivity().getApplicationContext(), "Repeat is ON", Toast.LENGTH_SHORT).show(); 
       isShuffle = false; 
       btnRepeat.setImageResource(R.drawable.btn_repeat_focused); 
       btnShuffle.setImageResource(R.drawable.btn_shuffle); 
      } 
     } 
    }); 
    btnShuffle.setOnClickListener(new View.OnClickListener() { 

     @Override 
     public void onClick(View arg0) { 
      if(isShuffle){ 
       isShuffle = false; 
       Toast.makeText(getActivity().getApplicationContext(), "Shuffle is OFF", Toast.LENGTH_SHORT).show(); 
       btnShuffle.setImageResource(R.drawable.btn_shuffle); 
      }else{ 
       isShuffle= true; 
       Toast.makeText(getActivity().getApplicationContext(), "Shuffle is ON", Toast.LENGTH_SHORT).show(); 
       isRepeat = false; 
       btnShuffle.setImageResource(R.drawable.btn_shuffle_focused); 
       btnRepeat.setImageResource(R.drawable.btn_repeat); 
      } 
     } 
    }); 

} 
public void playSong(int songIndex) { 
    try { 
     Log.e("playSong()...", "....is called"); 
     mp.reset(); 
     mp.setDataSource(songsList.get(songIndex).getSongPath()); 
     mp.prepare(); 
     songProgressBar.setProgress(0); 
     songProgressBar.setMax(100); 
     String songTitle = songsList.get(songIndex).getSongTitle(); 
     songTitleLabel.setText(songTitle); 
     btnPlay.setImageResource(R.drawable.btn_pause); 
     mp.start(); 
     updateProgressBar(); 
    } catch (IllegalArgumentException e) { 
     e.printStackTrace(); 
    } catch (IllegalStateException e) { 
     e.printStackTrace(); 
    } catch (IOException e) { 
     e.printStackTrace(); 
    } 
} 
@Override 
public void onActivityResult(int requestCode, int resultCode, Intent data) { 
    super.onActivityResult(requestCode, resultCode, data); 

    Log.i("song...songIndex...", "..." + songIndex); 
    mHandler.removeCallbacks(mUpdateTimeTask); 
    if(resultCode == 100){ 
     currentSongIndex = data.getExtras().getInt("songIndex"); 
     // play selected song 
     playSong(currentSongIndex); 
    } 

} 
private Runnable mUpdateTimeTask = new Runnable() { 
    public void run() { 
     long totalDuration = mp.getDuration(); 
     long currentDuration = mp.getCurrentPosition(); 

     songTotalDurationLabel.setText(""+utils.milliSecondsToTimer(totalDuration)); 

     songCurrentDurationLabel.setText("" + utils.milliSecondsToTimer(currentDuration)); 

     int progress =(int)(utils.getProgressPercentage(currentDuration, totalDuration)); 

     songProgressBar.setProgress(progress); 

     mHandler.postDelayed(this, 100); 
    } 
}; 
private void updateProgressBar() { 
    mHandler.postDelayed(mUpdateTimeTask, 100); 
} 
@Override 
public void onCompletion(MediaPlayer mp) { 
    if(isRepeat){ 
     playSong(currentSongIndex); 
    } else if(isShuffle){ 
     Random rand = new Random(); 
     currentSongIndex = rand.nextInt((songsList.size() - 1) - 0 + 1) + 0; 
     playSong(currentSongIndex); 
    } else{ 
     if(currentSongIndex < (songsList.size() - 1)){ 
      playSong(currentSongIndex + 1); 
      currentSongIndex = currentSongIndex + 1; 
     }else{ 
      playSong(0); 
      currentSongIndex = 0; 
     } 
    } 
} 
@Override 
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) { 

} 
public void onStartTrackingTouch(SeekBar seekBar) { 
    mHandler.removeCallbacks(mUpdateTimeTask); 
} 
public void onStopTrackingTouch(SeekBar seekBar) { 
    mHandler.removeCallbacks(mUpdateTimeTask); 
    int totalDuration = mp.getDuration(); 
    int currentPosition = utils.progressToTimer(seekBar.getProgress(), totalDuration); 
    mp.seekTo(currentPosition); 
    updateProgressBar(); 
} 
@Override 
public void onDialPositionChanged(WheelModel sender, int nicksChanged) { 
    getActivity().setVolumeControlStream(AudioManager.STREAM_MUSIC); 
    mp2 =MediaPlayer.create(getActivity(),R.raw.djlazer); 
    mp2.start(); 
}} 

です。

事前のおかげで...

Answer 1

イベント、ユーザが自分の指がMotionEvent.ACTION_UPでリリース。私は、onClick（）の代わりにView.OnTouchListenerを使用することを禁止するガイドラインがあるかどうかは分かりませんが、おそらく状況によって異なります。 は、ここに私のサンプル動作するコードです：

imageButton.setOnTouchListener(new OnTouchListener() { 
    @Override 
    public boolean onTouch(View v, MotionEvent event) { 
     if(event.getAction() == MotionEvent.ACTION_UP){ 

      // Do what you want 
      return true; 
     } 
     return false; 
    } 
});