搜索栏未与我的媒体播放器同步

Question

我的搜索栏未与我的媒体播放器同步。媒体播放器正常工作，但搜索栏未随音频文件一起移动。我希望搜索栏获得音频文件的持续时间，并在搜索栏中实现它，并且当用户搜索搜索栏时，音频将从这一点开始播放，依此类推。顺便说一句，我是编程新手，如果您愿意提供帮助，请告诉我正确的代码以及将代码放置在哪里。在正确的地方实施正确的代码。谢谢您的支持。

这是我的代码

package com.excellentaccountant.mohammed.myapplication;

import android.app.ProgressDialog;
import android.media.MediaPlayer;
import android.os.AsyncTask;
import android.os.Handler;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import android.widget.Button;
import android.widget.SeekBar;

import java.io.IOException;

   public class MainActivity extends AppCompatActivity implements 
  View.OnClickListener,
    View.OnTouchListener, MediaPlayer.OnCompletionListener,
    MediaPlayer.OnBufferingUpdateListener, MediaPlayer.OnInfoListener  {
   Button play ,pause;
   SeekBar seekBar;
   Player player;
   int flag;
   String url="Audio_url";
     ProgressDialog progressDialog;
    private MediaPlayer mediaPlayer;
    private int lengthOfAudio;
    private final Handler handler = new Handler();

   private final Runnable r = new Runnable()
   {
    @Override
    public void run() {
        updateSeekProgress();

    }
};

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    progressDialog=new ProgressDialog(this);
    flag=0;
    progressDialog.setMessage("Loading...");
    progressDialog.setCancelable(false);
    mediaPlayer=new MediaPlayer();

    play=(Button)findViewById(R.id.play);
    pause=(Button)findViewById(R.id.pause);
    seekBar=(SeekBar)findViewById(R.id.seekbar);
    play.setOnClickListener(this);
    pause.setOnClickListener(this);
    seekBar.setOnTouchListener(this);
    mediaPlayer.setOnBufferingUpdateListener(this);
    mediaPlayer.setOnCompletionListener(this);

    mediaPlayer.setOnInfoListener(this);
}

@Override
public void onBufferingUpdate(MediaPlayer mediaPlayer, int i) {
    seekBar.setSecondaryProgress(i);
    System.out.println(i);

}

@Override
public void onCompletion(MediaPlayer mediaPlayer) {
    seekBar.setProgress(0);
}

@Override
public boolean onInfo(MediaPlayer mp, int what, int extra) {

    switch (what) {
        case MediaPlayer.MEDIA_INFO_BUFFERING_START:
            progressDialog.show();

            break;
        case MediaPlayer.MEDIA_INFO_BUFFERING_END:
            progressDialog.dismiss();

            break;
    }
    return true;
}

@Override
public void onClick(View v) {
    switch (v.getId())
    {
        case R.id.play:
            if (flag==0){
                //  new Player().execute(URL);
                player=new Player();
                player.execute(url);

            }
            else {
                if (mediaPlayer!=null){

                    playAudio();

                }
            }
            break;
        case R.id.pause:
            pauseAudio();
            break;
        default:
            break;
       }

   }

   @Override
   public boolean onTouch(View v, MotionEvent motionEvent) {

        if (mediaPlayer.isPlaying())
        {
        SeekBar tmpSeekBar = (SeekBar)v;
        mediaPlayer.seekTo((lengthOfAudio / 100) * tmpSeekBar.getProgress() 
);
       }
        else {
            SeekBar tmpSeekBar = (SeekBar)v;
        mediaPlayer.seekTo((lengthOfAudio / 100) * tmpSeekBar.getProgress() 
);
        }
        return false;
    }

    private void updateSeekProgress() {
        if (mediaPlayer != null) {
            if (mediaPlayer.isPlaying()) {
                seekBar.setProgress((int) (((float) 
mediaPlayer.getCurrentPosition() / lengthOfAudio) * 100));


                handler.postDelayed(r, 1000);
            }
        }
    }

    class Player extends AsyncTask<String, Void, Boolean> {
        @Override
        protected Boolean doInBackground(String... params) {

            Boolean prepared;

            try
            {
                mediaPlayer.setDataSource(params[0]);
                mediaPlayer.prepare();
                lengthOfAudio = mediaPlayer.getDuration();

                prepared = true;

            }
            catch (IllegalArgumentException e) {
                // TODO Auto-generated catch block
                Log.d("IllegarArgument", e.getMessage());
                prepared = false;
                e.printStackTrace();
            } catch (SecurityException e) {
                // TODO Auto-generated catch block
                prepared = false;
                e.printStackTrace();
            } catch (IllegalStateException e) {
                // TODO Auto-generated catch block
                prepared = false;
                e.printStackTrace();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                prepared = false;
                e.printStackTrace();
            }

            return prepared;
        }

        @Override
        protected void onPreExecute() {
            super.onPreExecute();
            progressDialog.show();

        }

        @Override
        protected void onPostExecute(Boolean aBoolean) {
            super.onPostExecute(aBoolean);
            progressDialog.dismiss();
            if (aBoolean){
                flag=1;
            }
            else {
                flag=0;
            }
            playAudio();

        }
    }

    private void playAudio() {

        if(mediaPlayer!=null)
        {
            mediaPlayer.start();
            updateSeekProgress();



        }
    }

    private void pauseAudio() {
       if(mediaPlayer!=null)
       {
            mediaPlayer.pause();
        }
    }
}