title: java.lang.IllegalStateException in MediaPlayer.isplaying() method
body: <pre><code>public static MediaPlayer mp=null;
  public static void playGeneric(int name, final ImageButton button,final ImageButton pervious,Context context) {
      button.setEnabled(false);
  button.setClickable(false);
  pervious.setEnabled(false);
  pervious.setClickable(false);
      try{
          if(mp != null &amp;&amp; mp.isPlaying())
          {
              mp.stop();
              mp.release();
              mp = null;
             mp=MediaPlayer.create(context, name);
             mp.start();
          }
          else
          {
              mp = MediaPlayer.create(context, name);
              mp.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
                  @Override
                  public void onPrepared(MediaPlayer arg0) {
                      //mp.prepare();
                      mp.start();
  
                  }
  
              });
          mp.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
  
              @Override
              public void onCompletion(MediaPlayer mp) {
                  // TODO Auto-generated method stub
                  mp.release();
                  System.out.println("Object released");
                  button.setEnabled(true);
                  button.setClickable(true);
                  pervious.setEnabled(true);
                  pervious.setClickable(true);
              }
          });
          }
  
      } catch (IllegalStateException e) {
          // TODO Auto-generated catch block
          e.printStackTrace();
      }catch (SecurityException e) {
          // TODO Auto-generated catch block
          e.printStackTrace();
          e.getMessage();
      } catch (NullPointerException e) {
          // TODO Auto-generated catch block
          e.printStackTrace();
          e.getMessage();
      }
  
  }
  </code></pre>
  
  <p>give me java.lang.IllegalStateException on mp.isplaying() method.</p>
  
  <p>I want to stop music if it's playing and play another song one after another.</p>
  
  <p>logcat:</p>
  
  <pre><code>10-14 15:12:05.474: E/MediaPlayer(15411): prepareAsync called in state 8
  10-14 15:12:05.474: W/System.err(15411): java.lang.IllegalStateException
  10-14 15:12:05.474: W/System.err(15411):    at android.media.MediaPlayer.prepare(Native Method)
  10-14 15:12:05.474: W/System.err(15411):    at com.rogerscenter.LearnReadWriteSpell.Utility.Music.playGeneric(Music.java:93)
  10-14 15:12:05.474: W/System.err(15411):    at com.rogerscenter.LearnReadWriteSpell.LetterCategory.Letter_Lesson1_activity.onCreate(Letter_Lesson1_activity.java:140)
  10-14 15:12:05.474: W/System.err(15411):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
  10-14 15:12:05.474: W/System.err(15411):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1586)
  10-14 15:12:05.474: W/System.err(15411):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1638)
  10-14 15:12:05.474: W/System.err(15411):    at android.app.ActivityThread.access$1500(ActivityThread.java:117)
  10-14 15:12:05.474: W/System.err(15411):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:928)
  10-14 15:12:05.484: W/System.err(15411):    at android.os.Handler.dispatchMessage(Handler.java:99)
  10-14 15:12:05.484: W/System.err(15411):    at android.os.Looper.loop(Looper.java:123)
  10-14 15:12:05.484: W/System.err(15411):    at android.app.ActivityThread.main(ActivityThread.java:3647)
  10-14 15:12:05.484: W/System.err(15411):    at java.lang.reflect.Method.invokeNative(Native Method)
  10-14 15:12:05.484: W/System.err(15411):    at java.lang.reflect.Method.invoke(Method.java:507)
  10-14 15:12:05.484: W/System.err(15411):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
  10-14 15:12:05.484: W/System.err(15411):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
  10-14 15:12:05.484: W/System.err(15411):    at dalvik.system.NativeStart.main(Native Method)
  </code></pre>