gistfile1.java

package com.example.amyu.mediaplayersmaple;

import android.app.Activity;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.os.Handler;
import android.os.PowerManager;
import android.util.Log;
import android.widget.SeekBar;

import java.io.IOException;


public class MainActivity extends Activity implements MediaPlayer.OnPreparedListener, MediaPlayer.OnErrorListener, MediaPlayer.OnBufferingUpdateListener {

    private SeekBar mSeekBar;

    private MediaPlayer mMediaPlayer;

    private Handler mSeekHandler;

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

        mSeekHandler = new Handler();

        initView();

        initMediaPlayer();
    }

    private void initMediaPlayer() {
        mMediaPlayer = new MediaPlayer();
        mMediaPlayer.setOnPreparedListener(this);
        mMediaPlayer.setOnErrorListener(this);
        mMediaPlayer.setOnBufferingUpdateListener(this);
        mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
        mMediaPlayer.setWakeMode(getApplicationContext(), PowerManager.PARTIAL_WAKE_LOCK);
        try {
            mMediaPlayer.setDataSource("http://wpc.125F2.alphacdn.net/00125F2/audio/website/programs/music/mb/mb150218latest_show.mp3");
            mMediaPlayer.prepareAsync();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private void initView() {
        mSeekBar = (SeekBar) findViewById(R.id.main_seek);
        mSeekBar.setOnSeekBarChangeListener(mOnSeekBarChangeListener);
    }


    private SeekBar.OnSeekBarChangeListener mOnSeekBarChangeListener = new SeekBar.OnSeekBarChangeListener() {
        @Override
        public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
            if(!fromUser){
                return;
            }
        }

        @Override
        public void onStartTrackingTouch(SeekBar seekBar) {

        }

        @Override
        public void onStopTrackingTouch(SeekBar seekBar) {

        }
    };

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

    @Override
    public boolean onError(MediaPlayer mp, int what, int extra) {
        return false;
    }

    @Override
    public void onPrepared(MediaPlayer mp) {
        mp.start();

        mSeekBar.setMax(mp.getDuration());
        mSeekHandler.post(mSeekRunnable);
    }

    private Runnable mSeekRunnable = new Runnable() {
        @Override
        public void run() {
            Log.d("log", mMediaPlayer.getCurrentPosition() + "");
            mSeekBar.setProgress(mMediaPlayer.getCurrentPosition());
            mSeekHandler.postDelayed(this, 100);
        }
    };
}