title: java.lang.IllegalStateException in MediaPlayer
body: <p>This is my code:</p>
  
  <pre><code>final MediaPlayer[] threeSound = new MediaPlayer[1];
  threeSound[0] = new MediaPlayer();
  final CountDownTimer playThreeSound = new CountDownTimer(1000, 1) {
      boolean timerStarted = false;
      @Override
      public void onTick(long millisUntilFinished) {
          torgText.setText("3...");
          if (!timerStarted) {
              timerStarted = true;
              threeSound[0] = MediaPlayer.create(PlayActivity.this, R.raw.three);
              try {
                  threeSound[0].prepare();
                  threeSound[0].start();
              } catch (IOException e) {
                  e.printStackTrace();
                  Log.e("IOE", "Something went wrong");
              }
          }
      }
  
      @Override
      public void onFinish() {
          if (threeSound[0].isPlaying()) {
              threeSound[0].stop();
          }
          playTwoSound.start();
      }
  };
  </code></pre>
  
  <p>It throws IllegalStateException. These are logs:</p>
  
  <pre><code>FATAL EXCEPTION: main
  Process: testapplication.android.com.guesstune_v2, PID: 3641
  java.lang.IllegalStateException
  at android.media.MediaPlayer._prepare(Native Method)
  at android.media.MediaPlayer.prepare(MediaPlayer.java:1351)
  at testapplication.android.com.guesstune_v2.PlayActivity$6.onTick(PlayActivity.java:316)
  at android.os.CountDownTimer$1.handleMessage(CountDownTimer.java:133)
  at android.os.Handler.dispatchMessage(Handler.java:102)
  at android.os.Looper.loop(Looper.java:145)
  at android.app.ActivityThread.main(ActivityThread.java:7007)
  at java.lang.reflect.Method.invoke(Native Method)
  at java.lang.reflect.Method.invoke(Method.java:372)
  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1404)
  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1199)
  </code></pre>
  
  <p>What is wrong with preparing MediaPlayer? What should I add to the code? I'm a newbie, sorry for a probably stupid question and for bad English.</p>