Android Open Source - Smartlab Main Activity

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Back to project page Smartlab.

License

The source code is released under:

Apache License

If you think the Android project Smartlab listed in this page is inappropriate, such as containing malicious code/tools or violating the copyright, please email info at java2s dot com, thanks.

Java Source Code

package ir.smartlab.audiotest;
/* ww w.  j a v  a 2 s .  c  om*/
import java.io.File;
import java.io.IOException;

import com.example.audiotest.R;

import android.app.Activity;
import android.content.Intent;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnCompletionListener;
import android.media.MediaPlayer.OnErrorListener;
import android.media.MediaPlayer.OnPreparedListener;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.view.View;
import android.widget.SeekBar;
import android.widget.SeekBar.OnSeekBarChangeListener;

public class MainActivity extends Activity {

  MediaPlayer mediaPlayer;
  SeekBar seekBar;
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    
    seekBar = (SeekBar) findViewById(R.id.seekBar);
    seekBar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
      
      @Override
      public void onStopTrackingTouch(SeekBar seekBar) {
      }
      
      @Override
      public void onStartTrackingTouch(SeekBar seekBar) {
      }
      
      @Override
      public void onProgressChanged(SeekBar seekBar, int progress,
          boolean fromUser) {
        mediaPlayer.seekTo(progress);        
      }
    });
    
    mediaPlayer = MediaPlayer.create(this, R.raw.kalimba);
    mediaPlayer.setOnCompletionListener(new OnCompletionListener() {
      
      @Override
      public void onCompletion(MediaPlayer mp) {
      }
    });
    
    mediaPlayer.setOnErrorListener(new OnErrorListener() {
      
      @Override
      public boolean onError(MediaPlayer mp, int what, int extra) {
        return false;
      }
    });
    
    mediaPlayer.setOnPreparedListener(new OnPreparedListener() {
      
      @Override
      public void onPrepared(MediaPlayer mp) {
        seekBar.setMax(mp.getDuration());
        mp.start();
      }
    });
    
  }
  
  public void playMusic(View v) {
    try {
      mediaPlayer.prepare();
    } catch (IllegalStateException | IOException e) {
      e.printStackTrace();
    }
  }
  
  public void stopMusic(View v) {
    if( mediaPlayer.isPlaying()) {
      mediaPlayer.stop();
    }
  }
  
  public void playWithDefaultPlayer(View v) {
    String sdCard = Environment.getExternalStorageDirectory().getAbsolutePath();
    File audioFile = new File(sdCard.concat("/Download/kalimba.mp3"));
    
    Uri uri = Uri.fromFile(audioFile);
    Intent i = new Intent(Intent.ACTION_VIEW);
    i.setDataAndType(uri, "audio/mp3");
    startActivity(i);
  }
}

Java Source Code List