MusicActivity.java

package com.ocit.musicandvideostream.activity;

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

import com.ocit.musicandvideostream.R;
import com.ocit.musicandvideostream.model.Song;

import java.util.ArrayList;

public class MusicActivity extends AppCompatActivity implements
        View.OnTouchListener, View.OnClickListener, MediaPlayer.OnBufferingUpdateListener {

    private Button btnPlay;
    private SeekBar seekBarProgress;
    private MediaPlayer player;
    private int mediaFileLengthInMilliseconds;
    private final Handler handler = new Handler();
    private RelativeLayout playPauseButtonBackground;
    private ImageButton playPauseButton;
    private boolean isPlaying = false;
    private SeekBar nowPlayingSeekBar;

    private int position;
    private ArrayList<Song> mSongs;

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

        position = getIntent().getIntExtra("position", 0);
        mSongs = new ArrayList<>();

        seekBarProgress = (SeekBar) findViewById(R.id.seekBar);
        seekBarProgress.setMax(99);
        seekBarProgress.setOnTouchListener(this);

        playPauseButtonBackground = (RelativeLayout) findViewById(R.id.playPauseButtonBackground);
        playPauseButtonBackground.setOnClickListener(this);

        playPauseButton = (ImageButton) findViewById(R.id.playPauseButton);
        playPauseButton.setOnClickListener(this);
//
//        nowPlayingSeekBar = (SeekBar) findViewById(R.id.nowPlayingSeekBar);
//        nowPlayingSeekBar.setMax(99);
//        nowPlayingSeekBar.setOnTouchListener(this);
    }

    /**
     * Method which updates the SeekBar primary progress by current song playing position
     */
    private void primarySeekBarProgressUpdater() {
        nowPlayingSeekBar.setProgress((int) (((float) player.getCurrentPosition() / mediaFileLengthInMilliseconds) * 100));
        if (player.isPlaying()) {
            Runnable notification = new Runnable() {
                public void run() {
                    primarySeekBarProgressUpdater();
                }
            };
            handler.postDelayed(notification, 1000);
        }
    }

    @Override
    public boolean onTouch(View v, MotionEvent event) {
        if (v.getId() == R.id.nowPlayingSeekBar) {
            /**
             * Seekbar onTouch event handler.
             * Method which seeks MediaPlayer to seekBar primary progress position
             */
            if (player.isPlaying()) {
                SeekBar sb = (SeekBar) v;
                int playPositionInMillisecconds = (mediaFileLengthInMilliseconds / 100) * sb.getProgress();
                player.seekTo(playPositionInMillisecconds);
            }
        }
        return false;
    }

    @Override
    public void onBufferingUpdate(MediaPlayer mp, int percent) {
        /**
         * Method which updates the SeekBar secondary progress by current song loading from URL position
         */
        nowPlayingSeekBar.setSecondaryProgress(percent);
    }

    @Override
    public void onClick(View v) {
        if (v.getId() == R.id.btnPlay) {
            mediaFileLengthInMilliseconds = player.getDuration(); // gets the song length in milliseconds from URL
            primarySeekBarProgressUpdater();
        } else if (v.getId() == R.id.playPauseButton) {
            playController();
        }
    }

    void playController() {
        try {
            player = new MediaPlayer();
            player.setAudioStreamType(AudioManager.STREAM_MUSIC);
            player.setDataSource(mSongs.get(position).getTitle());
            player.prepare();
            player.start();
        } catch (Exception e) {
            Log.d("eror play music", e.toString());
        }
        if (isPlaying == false) {
            isPlaying = true;
            playPauseButton.setImageResource(R.drawable.pause_light);
            mediaFileLengthInMilliseconds = player.getDuration();
            primarySeekBarProgressUpdater();
        } else {
            playPauseButton.setImageResource(R.drawable.play_light);
            player.pause();
            isPlaying = false;
        }
    }
}