TestMediaPlayerWithSeekbar.java

package com.h6ah4i.android.mediaplayertest;

import android.media.MediaPlayer;
import android.net.Uri;
import android.os.Handler;
import android.support.v7.app.ActionBarActivity;
import android.support.v4.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.SeekBar;

import java.io.IOException;


public class MainActivity extends ActionBarActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        if (savedInstanceState == null) {
            getSupportFragmentManager().beginTransaction()
                    .add(R.id.container, new PlaceholderFragment())
                    .commit();
        }
    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }

    /**
     * A placeholder fragment containing a simple view.
     */
    public static class PlaceholderFragment extends Fragment implements SeekBar.OnSeekBarChangeListener {
        private static final int SEEKBAR_UPDATE_PERIOD = 100;
        private SeekBar mSeekBar;
        private MediaPlayer mMediaPlayer;
        private Handler mHandler;
        private Runnable mPeriodicUpdateSeekBar = new Runnable() {
            @Override
            public void run() {
                onUpdateSeekBar();
            }
        };

        private void onUpdateSeekBar() {
            mSeekBar.setProgress(mMediaPlayer.getCurrentPosition());
            mHandler.postDelayed(mPeriodicUpdateSeekBar, SEEKBAR_UPDATE_PERIOD);
        }

        public PlaceholderFragment() {
        }

        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);

            mHandler = new Handler();
        }

        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                                 Bundle savedInstanceState) {
            View rootView = inflater.inflate(R.layout.fragment_main, container, false);

            mSeekBar = (SeekBar) (rootView.findViewById(R.id.seekBar));
            mSeekBar.setOnSeekBarChangeListener(this);

            ((Button) rootView.findViewById(R.id.button)).setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    startStopPlayback();
                }
            });

            return rootView;
        }

        private void startStopPlayback() {
            if (mMediaPlayer != null) {
                mMediaPlayer.pause();
                mMediaPlayer.release();
                mMediaPlayer = null;

                mHandler.removeCallbacksAndMessages(null);
            } else {
                mMediaPlayer = new MediaPlayer();
                try {
                    mMediaPlayer.setDataSource(getActivity().getApplicationContext(), Uri.parse("http://192.168.11.2:8080/test.mp3"));
                    mMediaPlayer.prepare();
                    mMediaPlayer.start();

                    mSeekBar.setMax(mMediaPlayer.getDuration());

                    onUpdateSeekBar();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }

        @Override
        public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
            if (fromUser) {
                if (mMediaPlayer != null) {
                    mMediaPlayer.seekTo(progress);
                }
            }
        }

        @Override
        public void onStartTrackingTouch(SeekBar seekBar) {

        }

        @Override
        public void onStopTrackingTouch(SeekBar seekBar) {

        }
    }
}