اشکال در سیک بار

باید از همچین کدی استفاده کنی:

  final Runnable mUpdateTimeTask = new Runnable() {

                    @Override
                    public void run() {
                        long totalDuration = mp.getDuration();
                        long currentDuration = mp.getCurrentPosition();

                        int progress = (int) (utils.getProgressPercentage(currentDuration, totalDuration));
                        seekProgress.setProgress(progress);

                        // Running this thread after 100 milliseconds again
                        mHandler.postDelayed(this, 100);
                    }
                };

اینم کد کامل یک سیک بار با تردش . برای خودمه فقط باید یک کمی بهش ور بری

 public class ActivityDoa_Salehi extends Activity {

    SeekBar          seekBar;
    MediaPlayer      mediaplayer;

    ImageView        pause_btn;
    ImageView        play_btn;
  
    
    @Override
    public void onBackPressed() {
    	// TODO Auto-generated method stub
    	 Intent intent = new Intent(ActivityDoa_Salehi.this, ActivityDoa_Index.class);
         ActivityDoa_Salehi.this.startActivity(intent);
         mediaplayer.stop();

         ActivityDoa_Salehi.this.finish();    	
        mediaplayer.stop();

    }
    

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.doa_salehi);
        

        pause_btn = (ImageView) findViewById(R.id.pause_btn);
        play_btn = (ImageView) findViewById(R.id.play_btn);

        seekBar = (SeekBar) findViewById(R.id.slider);
        mediaplayer = MediaPlayer.create(ActivityDoa_Salehi.this, R.raw.salehi);

        // ######### az rooye moshakhasate file soti seekbar ro tanzim mikonim...
        mediaplayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {

            @Override
            public void onPrepared(MediaPlayer mediaPlayer) {
                seekBar.setMax(mediaplayer.getDuration());
                seekBar.postDelayed(onEverySecond, 1000);
            }
        });

        // ########## mediaplayer ro start mikonim
        mediaplayer.start();

        // ############## baraye inke vaghti seekbar ro jabeja mikonid...
        seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {

            @Override
            public void onStopTrackingTouch(SeekBar seekBar) {}


            @Override
            public void onStartTrackingTouch(SeekBar seekBar) {}


            @Override
            public void onProgressChanged(SeekBar seekBar, int progress,
                                          boolean fromUser) {

                if (fromUser) {
                    // vaghti seek bar ro jabeja mikonim inja ejra mishe...
                    mediaplayer.seekTo(progress);

                }
            }
        });

        //dokmeye pause
        pause_btn.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View view) {
                mediaplayer.pause();
            }
        });

        //dokmeye play
        play_btn.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View view) {
                mediaplayer.start();

                // tanzim e dobareye seekbar bad az inke dobare play kardim
                seekBar.setMax(mediaplayer.getDuration());
                seekBar.postDelayed(onEverySecond, 1000);

            }
        });
  
        ///////////////////////////
    } // end of onCreate
      /////////////////////////    
      //  in ye joor timer hast ke har sanie yek bar seekbar ro update mikone

    private Runnable onEverySecond = new Runnable() {

                                       @Override
                                       public void run() {
                                           if (seekBar != null) {
                                               seekBar.setProgress(mediaplayer.getCurrentPosition());
                                           }

                                           if (mediaplayer.isPlaying()) {
                                               seekBar.postDelayed(onEverySecond, 1000);
                                           }
                                       }
                                   };

}