Android Open Source - MediaTechPlayer Main Activity

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Back to project page MediaTechPlayer.

License

The source code is released under:

MIT License

Java Source Code

package hu.bme.mediatech.player;
//  w  ww.j av a  2s  .c om
import java.io.IOException;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.res.Configuration;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnCompletionListener;
import android.media.MediaPlayer.OnPreparedListener;
import android.media.MediaPlayer.OnVideoSizeChangedListener;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.os.PowerManager;
import android.provider.MediaStore;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.LinearLayout.LayoutParams;
import android.widget.SeekBar;
import android.widget.SeekBar.OnSeekBarChangeListener;
import android.widget.TextView;
import android.widget.VideoView;

public class MainActivity extends Activity implements OnClickListener, OnCompletionListener, 
                            OnPreparedListener, SurfaceHolder.Callback, OnVideoSizeChangedListener {
  private Context context;
  private MediaPlayer player;
  private SurfaceView view;
  private SurfaceHolder holder;
  private ImageButton playPause, stop;
  private Button videos, music;
  private SeekBar bar;
  private Video video;
  private AudioTrack audioTrack;
  private boolean readyToPlay;
  private Intent openListIntent = new Intent().setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
  private TextView timeElapsed, timeRemaining;
  private Handler handler;
  
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        context = getApplicationContext();
        
        player = new MediaPlayer();
        player.setOnPreparedListener(this);
        player.setOnCompletionListener(this);
        player.setOnVideoSizeChangedListener(this);
     
        view = (SurfaceView) findViewById(R.id.surfaceView);
        holder = view.getHolder();
        holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
    holder.addCallback(this);

        playPause = (ImageButton) findViewById(R.id.buttonPlayPause);
        stop = (ImageButton) findViewById(R.id.buttonStop);        
        videos = (Button) findViewById(R.id.buttonVideos);
        music = (Button) findViewById(R.id.buttonMusic);
        
        timeElapsed = (TextView) findViewById(R.id.timeElapsed);
        timeRemaining = (TextView) findViewById(R.id.timeRemaining);
        
        view.setOnClickListener(this);
        playPause.setOnClickListener(this);
        stop.setOnClickListener(this);
        videos.setOnClickListener(this);
        music.setOnClickListener(this);
        
        bar = (SeekBar) findViewById(R.id.seekBar);
        bar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
      @Override
      public void onProgressChanged(SeekBar bar, int progress, boolean fromUser) {
        if(fromUser) {
          player.seekTo(progress);
        }
      }
      @Override
      public void onStartTrackingTouch(SeekBar bar) { }
      @Override
      public void onStopTrackingTouch(SeekBar bar) { }          
        });
        
        handler = new Handler() {
          public void handleMessage(Message msg) {
            refreshCounter(msg.arg1, msg.arg2);
          }};  
        
        final Intent in = super.getIntent();
        final String intentAction = in.getAction();
        if(intentAction != null) {
        if(intentAction.equals("mediatechplayer.selected.VIDEO")) {
              video = new Video(in.getBundleExtra("data"));
        }
        else if(intentAction.equals("mediatechplayer.selected.AUDIOTRACK")) {
              audioTrack = new AudioTrack(in.getBundleExtra("data"));
        }
        }
    }
    
    @Override
    public void onDestroy() {
      super.onDestroy();
        if(player != null) player.release();
        if(audioTrack != null) stopService(new Intent(context, PlayerService.class));
    }
    
    private void prepareFile(Uri uri, boolean isVideo) throws IllegalStateException, IOException {
      if(isVideo) {
        player.setDisplay(holder);
        player.setScreenOnWhilePlaying(true);
      }
      if(!isVideo) { 
        player.setAudioStreamType(AudioManager.STREAM_MUSIC);
          player.setWakeMode(context, PowerManager.PARTIAL_WAKE_LOCK);
      }
      player.setDataSource(context, uri);
      player.prepare();
      displayMetadata(video != null);
    }

  @Override
  public void onClick(View v) {
    switch (v.getId()) {
    case R.id.buttonPlayPause:
        if(player.isPlaying()) pausePlayback();
        else startPlayback();
      break;
    case R.id.buttonStop:
      stopPlayback();
      break;
    case R.id.buttonVideos:
        openListIntent.setAction("mediatechplayer.select.VIDEO");
        startActivity(openListIntent);
      break;
    case R.id.buttonMusic:
      openListIntent.setAction("mediatechplayer.select.ALBUM");
        startActivity(openListIntent);
      break;
    case R.id.surfaceView:
      openListIntent.setAction("mediatechplayer.fullscreen.VIDEO");
      openListIntent.putExtra("data", video.toBundle());
      openListIntent.putExtra("seek", player.getCurrentPosition());
      startActivity(openListIntent);
      player.pause();
      break;
    }    
  }
  
  private Thread monitorProgress() {
    return new Thread(new Runnable() {
      @Override
      public void run() {
              int currentPosition = -1, total, tElapsed, tRemaining;
              total = player.getDuration();
              bar.setMax(total);
              
              while (player != null && currentPosition < total) {
                  try {
                      Thread.sleep(100);
                      currentPosition = player.getCurrentPosition();
                      tElapsed = currentPosition / 1000;
                      tRemaining = (total / 1000) - tElapsed;
                      handler.obtainMessage(1, tElapsed, tRemaining).sendToTarget();
                  } catch (InterruptedException e) { return; } 
                    catch (Exception e) { return; }
                  bar.setProgress(currentPosition);
              }
          }
    });
  }
  
  private void refreshCounter(int tElapsed, int tRemaining) {
        timeElapsed.setText(String.format("%d:%02d:%02d",
            (int) Math.floor(tElapsed / 3600), 
            (int) Math.floor(tElapsed % 3600 / 60), tElapsed % 3600 % 60));
        timeRemaining.setText(String.format("-%d:%02d:%02d",
            (int) Math.floor(tRemaining / 3600), 
            (int) Math.floor(tRemaining % 3600 / 60), tRemaining % 3600 % 60));    
  }
  
  private void displayMetadata(boolean isVideo) {
    TextView title = (TextView) findViewById(R.id.textViewTitle);
    TextView album = (TextView) findViewById(R.id.textViewAlbum);
    ImageView albumArt = (ImageView) findViewById(R.id.imageViewAlbumArt);
    TextView artist = (TextView) findViewById(R.id.textViewArtist);
    TextView duration = (TextView) findViewById(R.id.textViewDuration);
    TextView size = (TextView) findViewById(R.id.textViewSize);
    
      title.setVisibility(View.VISIBLE);
    if(isVideo)  {
      title.setText(video.title);
      duration.setText(video.getDuration() +" "+ getText(R.string.minutes));
      duration.setVisibility(View.VISIBLE);
      size.setText(video.getSize());
      size.setVisibility(View.VISIBLE);
      albumArt.setVisibility(View.GONE);
    }
    else { 
      title.setText(audioTrack.title);
      album.setText(audioTrack.album);
      album.setVisibility(View.VISIBLE);
      artist.setText(audioTrack.artist);
      artist.setVisibility(View.VISIBLE);      
      albumArt.setImageURI(Uri.parse(audioTrack.albumArtUri));
      albumArt.setVisibility(View.VISIBLE);
    }
  }
  
  public void startPlayback() {
    if(readyToPlay) {
      player.start();
      playPause.setImageResource(R.drawable.pause);
    }
    if(audioTrack != null) {
      Intent serviceIntent = new Intent(context, PlayerService.class)
                  .putExtra("data", audioTrack.toBundle());    
      startService(serviceIntent);
    }
  }
  
  public void pausePlayback() {
    player.pause();
    playPause.setImageResource(R.drawable.play);
    if(audioTrack != null) {
      stopService(new Intent(context, PlayerService.class));
    }
  }
  
  public void stopPlayback() {
    player.seekTo(0);
    player.pause();
    playPause.setImageResource(R.drawable.play);
    if(audioTrack != null) {
      stopService(new Intent(context, PlayerService.class));
    }
  }

  @Override
  public void onPrepared(MediaPlayer player) {
    monitorProgress().start();
    readyToPlay = true;
  }

  @Override
  public void onCompletion(MediaPlayer player) {
    stopPlayback();
    if(audioTrack != null) stopService(new Intent(context, PlayerService.class));
  }
  
  @Override
    public void onVideoSizeChanged(MediaPlayer player, int width, int height) { }
  
  @Override
  public void surfaceCreated(SurfaceHolder holder) {
        try {
          if(video != null)
        prepareFile(video.getURI(), true);
          else if(audioTrack != null)
            prepareFile(audioTrack.getURI(), false);
    } catch (IllegalStateException e) { } 
      catch (IOException e) { }   
        
    float videoWidth = player.getVideoWidth();
        float videoHeight = player.getVideoHeight();        
        float screenWidth = getWindowManager().getDefaultDisplay().getWidth();

        android.view.ViewGroup.LayoutParams lp = view.getLayoutParams();
        lp.width =(int) screenWidth;
        lp.height = (int) ((videoHeight / videoWidth) * screenWidth);
        
        view.setLayoutParams(lp);
        holder.setFixedSize(lp.width, lp.width);
        startPlayback();
  }

  @Override
  public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) { }
  @Override
  public void surfaceDestroyed(SurfaceHolder holder) { }
}

Java Source Code List

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