Buffering em MediaPlayer

Tenho um objeto

	**MediaPlayer mPlayer = new MediaPlayer();**

	 

	Objetivo: Tocar o Streaming de uma Web Rádio e funciona corretamente.

	 

	Porém, quando clico em *Play*, leva um tempo até que a* Rádio Web* comece a tocar.

	 

	Existe alguma forma de enquanto o **streaming** estiver carregando, eu pegar o percentual para passar para uma  **SeekBar** por exemplo?, 

	 

	Como?

	 

	Segue o que eu já fiz:

	 

package carcleo.com.player;

import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.ProgressDialog;
import android.app.TaskStackBuilder;
import android.content.Context;
import android.content.Intent;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnBufferingUpdateListener;
import android.os.AsyncTask;
import android.os.Build;
import android.support.annotation.RequiresApi;
import android.support.v4.app.NotificationCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.SeekBar;
import android.widget.TextView;
import java.io.IOException;

public class player extends AppCompatActivity implements OnBufferingUpdateListener{

 private MediaPlayer mPlayer;
 private String URL;
 private Button btnPlayPause;
 private Boolean conexao = false;
 private SeekBar sb;
 private TextView textView;
 private TextView textView2;
 private TextView textView3;
 private NotificationManager mNotificationManager;
 private AudioManager audioManager;
 private ProgressDialog progressDialog;

 @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.player);
 sb = findViewById(R.id.seekBar);

 textView = findViewById(R.id.textView);
 textView2 = findViewById(R.id.textView2);
 textView3 = findViewById(R.id.textView3);

 progressDialog = new ProgressDialog(this);

 btnPlayPause = (Button) findViewById(R.id.btnPlayPause);

 btnPlayPause.setOnClickListener(new View.OnClickListener() {
 @Override
 public void onClick(View view) {
 try {
 tocaPausa();
 } catch (IOException e) {
 e.printStackTrace();
 }
 }
 });

 configuraAudioManager();
 }

 private void tocaPausa() throws IOException {
 if (conexao == true) {
 if (!mPlayer.isPlaying()) {
 mPlayer.start();
 btnPlayPause.setBackgroundResource(R.drawable.pause);
 } else {
 mPlayer.pause();
 btnPlayPause.setBackgroundResource(R.drawable.play);
 }
 } else {
 String url = "rtsp://cdn-the-2.musicradio.com:80/LiveAudio/Capital"; // your URL here
 new Play().execute(url);
 }
 }

 private void configuraAudioManager() {
 audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);

 int maxVolume = audioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
 int volume = audioManager.getStreamVolume(AudioManager.STREAM_MUSIC);

 sb.setMax(maxVolume);
 sb.setProgress(volume);

 sb.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
 @Override
 public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
 audioManager.setStreamVolume(AudioManager.STREAM_MUSIC, progress, AudioManager.FLAG_SHOW_UI);

 Double total = progress * 6.666666666666667;
 String valor =Integer.toString(Integer.valueOf(total.intValue()));
 textView.setText(valor+" %");

 }

 @Override
 public void onStartTrackingTouch(SeekBar seekBar) {}

 @Override
 public void onStopTrackingTouch(SeekBar seekBar) {}
 });
 }

 @RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN)
 private void notificacao (){

 NotificationCompat.Builder mBuilder =
 new NotificationCompat.Builder(this)
 .setSmallIcon(R.drawable.home)
 .setContentTitle("Rádio Capital")
 .setContentText("Agora deu");

 Intent resultIntent = new Intent(this, player.class);
 TaskStackBuilder stackBuilder = TaskStackBuilder.create(this);
 stackBuilder.addParentStack(player.class);
 stackBuilder.addNextIntent(resultIntent);
 PendingIntent resultPendingIntent = stackBuilder.getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT);
 mBuilder.setContentIntent(resultPendingIntent);
 mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
 mNotificationManager.notify(1, mBuilder.build());

 }

 private void contaBuffer () {

 textView2.setText(Integer.toString(mPlayer.getDuration()));
 mPlayer.setOnBufferingUpdateListener(
 new MediaPlayer.OnBufferingUpdateListener() {
 public void onBufferingUpdate(MediaPlayer mp, int percent)
 {
 double ratio = percent / 100.0;
 int bufferingLevel = (int)(mp.getDuration() * ratio);

 sb.setSecondaryProgress(bufferingLevel);
 textView2.setText(Integer.toString(bufferingLevel));
 }

 }

 );

 }

 public void mostraBuffer() {

 mPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
 @Override
 public void onPrepared(MediaPlayer mediaPlayer) {

 mediaPlayer.setOnInfoListener(new MediaPlayer.OnInfoListener() {
 @Override
 public boolean onInfo(MediaPlayer mp, int what, int extra) {
 if (what == MediaPlayer.MEDIA_INFO_BUFFERING_END){
 progressDialog.dismiss();
 return true;
 } else if(what == MediaPlayer.MEDIA_INFO_BUFFERING_START){
 progressDialog.show();
 }
 return false;
 }
 });
 }
 });

 }

 @Override
 public void onBufferingUpdate(MediaPlayer mp, int percent) {

 textView3.setText(Integer.toString(percent));

 }

 class Play extends AsyncTask<String, Void ,Boolean > {

 @Override
 protected void onPreExecute() {

 btnPlayPause.setBackgroundResource(R.drawable.carregando);
 btnPlayPause.setEnabled(false);

 }

 @Override
 protected Boolean doInBackground(String... params) {

 try {
 mPlayer = new MediaPlayer();
 mPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
 mPlayer.setDataSource(params[0]);
 mostraBuffer();
 mPlayer.prepare(); // might take long! (for buffering, etc)
 return true;
 } catch (IOException e) {
 e.printStackTrace();
 }

 return false;
 }
 @Override
 protected void onPostExecute(Boolean result) {

 if (result == true){
 btnPlayPause.setEnabled(true);
 mPlayer.start();
 conexao = true;
 btnPlayPause.setBackgroundResource(R.drawable.pause);
 contaBuffer();
 } else {
 conexao = false;
 }

 }

 }

}