title: How to play song again after stop it in android?
body: <p><strong>Hello Friends,
  I make one app in android, in which i take three radio button in radiogroup and take two buttons "play" and "stop".
  my problem is that when i play the song it is playing well but when i click on stop button and then click on play button then song is not playing,
  how to do that ? please help me if anybody know.
  below is code that i write:</strong></p>
  
  <pre><code> package com.mediaplayer;
  
  import java.io.IOException;
  
  import android.app.Activity;
  import android.media.MediaPlayer;
  import android.os.Bundle;
  import android.view.View;
  import android.widget.Button;
  import android.widget.RadioGroup;
  import android.widget.RadioGroup.OnCheckedChangeListener;
  
  public class MediaplayerActivity extends Activity implements OnCheckedChangeListener {
  
  MediaPlayer song1,song2,song3;
  int whatsong = 0;
  
  @Override
  public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.main);
  
  
  
      RadioGroup rgMusic = (RadioGroup) findViewById(R.id.radioGroup1);
  
      song1 = MediaPlayer.create(MediaplayerActivity.this, R.raw.fluet);
      song2 = MediaPlayer.create(MediaplayerActivity.this, R.raw.mogra_na_phool);
      song3 = MediaPlayer.create(MediaplayerActivity.this, R.raw.airtel);
  
  
      Button bPlay = (Button) findViewById(R.id.bPlay);
      Button bStop = (Button) findViewById(R.id.bStop);
  
      rgMusic.setOnCheckedChangeListener(this);
  
      bPlay.setOnClickListener(new View.OnClickListener() {
  
          @Override
          public void onClick(View v) {           
  
              if(song1.isPlaying())
              {
                  song1.pause();
                  song1.seekTo(0);
              }
  
              if(song2.isPlaying())
              {
                  song2.pause();
                  song2.seekTo(0);
              }
  
              if(song3.isPlaying())
              {
                  song3.pause();
                  song3.seekTo(0);
              }
  
              switch (whatsong) {
  
              case 1:
                  try {
                      song1.prepare();
                  } catch (IllegalStateException e) {                 
                      e.printStackTrace();
                  } catch (IOException e) {                   
                      e.printStackTrace();
                  }
                  song1.start();
                  break;  
  
              case 2:
                  try {
                      song2.prepare();
                  } catch (IllegalStateException e) {                 
                      e.printStackTrace();
                  } catch (IOException e) {                   
                      e.printStackTrace();
                  }
                  song2.start();
                  break;
  
              case 3:
                  try {
                      song3.prepare();
                  } catch (IllegalStateException e) {                     
                      e.printStackTrace();
                  } catch (IOException e) {               
                      e.printStackTrace();
                  }
                  song3.start();
                  break;
              }
          }
      });
  
      bStop.setOnClickListener(new View.OnClickListener() {
  
          @Override
          public void onClick(View v) {       
  
              switch (whatsong) {
  
              case 1:
                  song1.stop();
                  break;  
  
              case 2:
                  song2.stop();
                  break;
  
              case 3:
                  song3.stop();
                  break;
              }           
          }
      });                                      
  }
  
  @Override
  public void onCheckedChanged(RadioGroup group, int rbId) {      
  
      switch (rbId) {
      case R.id.rbMusic1:
          whatsong = 1;           
          break;
      case R.id.rbMusic2:
          whatsong = 2;           
          break;
      case R.id.rbMusic3:
          whatsong = 3;           
          break;
  
      }
  
  }
  </code></pre>
  
  <p>}</p>