片段上的android单实例媒体播放器

Question

这就是我在我的Android当前播放的内容但无法阻止它在mediaPlayer.stop();

崩溃的mp3

  private static MediaPlayer mediaPlayer;
 public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        final View view= inflater.inflate(R.layout.fragment_home, container, false);
        Button play = (Button) view.findViewById(R.id.play);
        Button stop = (Button) view.findViewById(R.id.stop);
        play.setOnClickListener(new View.OnClickListener()
        {
            @Override
            public void onClick(View v) {
                try {
                    if (mediaPlayer == null){
                        final  MediaPlayer mediaPlayer = new MediaPlayer();

                        mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
                        mediaPlayer.setDataSource("http://www.xxxxx/001.mp3");
                        mediaPlayer.prepare();
                        if (!mediaPlayer.isPlaying()) {
                            System.out.println("Should Play");
                            mediaPlayer.start();
                        }}
                    }catch(Exception e){
                        e.printStackTrace();
                    }
                }
            });


 public synchronized void stopMedia()
    {
        if( mediaPlayer.isPlaying())
        {
            mediaPlayer.stop();


            //status = MediaStatus.STOP;

        }
    }

它播放但我无法阻止它，它在应用程序崩溃了 mediaplayer.stop();
不知道为什么浪费很长时间寻找线索。

=============== 这是根据评论的新代码

     public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
            final View view= inflater.inflate(R.layout.fragment_home, container, false);
            Button play = (Button) view.findViewById(R.id.play);


            Button stop = (Button) view.findViewById(R.id.stop);
            play.setOnClickListener(new View.OnClickListener()
            {
                @Override
                public void onClick(View v) {
                    String url = "http://www.brothershouse.narod.ru/music/pepe_link_-_guitar_vibe_113_club_mix.mp3"; // your URL here
                    MediaPlayer myMediaPlayer = new MediaPlayer();
                    myMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
                    try {
                        myMediaPlayer.setDataSource(url);
                        myMediaPlayer.prepareAsync(); // might take long! (for buffering, etc)

                    } catch (IOException e) {
                     //   Toast.makeText(this, "mp3 not found", Toast.LENGTH_SHORT).show();
                        e.printStackTrace();
                    }

                    //mp3 will be started after completion of preparing...
                    myMediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {

                        @Override
                        public void onPrepared(MediaPlayer player) {
                            player.start();
                        }

                    });

                }});



now how do i stop this from a different button
stop.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //stop

                stopPlaying();

                try {


                } catch (Exception e) {
                    e.printStackTrace();
                }


            }
        });



private void stopPlaying() {

        myMediaPlayer.pause();

}

现在如何再次停止播放