SeekBar and media player in android

To create a 'connection' between SeekBar and MediaPlayer you need first to get your current recording max duration and set it to your seek bar.

mSeekBar.setMax(mFileDuration/1000); // where mFileDuration is mMediaPlayer.getDuration();

After you initialise your MediaPlayer and for example press play button, you should create handler and post runnable so you can update your SeekBar (in the UI thread itself) with the current position of your MediaPlayer like this :

private Handler mHandler = new Handler();//Make sure you update Seekbar on UI threadMainActivity.this.runOnUiThread(new Runnable() {    @Override    public void run() {        if(mMediaPlayer != null){            int mCurrentPosition = mMediaPlayer.getCurrentPosition() / 1000;            mSeekBar.setProgress(mCurrentPosition);        }        mHandler.postDelayed(this, 1000);    }});

and update that value every second.

If you need to update the MediaPlayer's position while user drag your SeekBar you should add OnSeekBarChangeListener to your SeekBar and do it there :

        mSeekBar.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(mMediaPlayer != null && fromUser){                    mMediaPlayer.seekTo(progress * 1000);                }            }    });

And that should do the trick! : )

EDIT:One thing which I've noticed in your code, don't do :

public MainActivity() {    mFileName = Environment.getExternalStorageDirectory().getAbsolutePath();    mFileName += "/audiorecordtest.3gp";}

make all initialisations in your onCreate(); , do not create constructors of your Activity.

I've used this tutorial with success, it's really simple to understand:www.androidhive.info/2012/03/android-building-audio-player-tutorial/

This is the interesting part:

/** * Update timer on seekbar * */public void updateProgressBar() {    mHandler.postDelayed(mUpdateTimeTask, 100);}  /** * Background Runnable thread * */private Runnable mUpdateTimeTask = new Runnable() {       public void run() {           long totalDuration = mp.getDuration();           long currentDuration = mp.getCurrentPosition();           // Displaying Total Duration time           songTotalDurationLabel.setText(""+utils.milliSecondsToTimer(totalDuration));           // Displaying time completed playing           songCurrentDurationLabel.setText(""+utils.milliSecondsToTimer(currentDuration));           // Updating progress bar           int progress = (int)(utils.getProgressPercentage(currentDuration, totalDuration));           //Log.d("Progress", ""+progress);           songProgressBar.setProgress(progress);           // Running this thread after 100 milliseconds           mHandler.postDelayed(this, 100);       }    };/** * * */@Overridepublic void onProgressChanged(SeekBar seekBar, int progress, boolean fromTouch) {}/** * When user starts moving the progress handler * */@Overridepublic void onStartTrackingTouch(SeekBar seekBar) {    // remove message Handler from updating progress bar    mHandler.removeCallbacks(mUpdateTimeTask);}/** * When user stops moving the progress hanlder * */@Overridepublic void onStopTrackingTouch(SeekBar seekBar) {    mHandler.removeCallbacks(mUpdateTimeTask);    int totalDuration = mp.getDuration();    int currentPosition = utils.progressToTimer(seekBar.getProgress(), totalDuration);    // forward or backward to certain seconds    mp.seekTo(currentPosition);    // update timer progress again    updateProgressBar();}

After you initialize your MediaPlayer and SeekBar, you can do this :

 Timer timer = new Timer();    timer.scheduleAtFixedRate(new TimerTask() {        @Override        public void run() {            mSeekBar.setProgress(mMediaPlayer.getCurrentPosition());        }    },0,1000);

This updates SeekBar every second(1000ms)

And for updating MediaPlayer, if user drag SeekBar, you must add OnSeekBarChangeListener to your SeekBar :

mSeekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {        @Override        public void onProgressChanged(SeekBar seekBar, int i, boolean b) {            mMediaPlayer.seekTo(i);        }        @Override        public void onStartTrackingTouch(SeekBar seekBar) {        }        @Override        public void onStopTrackingTouch(SeekBar seekBar) {        }    });

HAPPY CODING!!!