Android 音乐播放 类似音乐播放器

读取本地音乐文件

源代码：

import android.media.MediaPlayer;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.View;import android.widget.ImageButton;import android.widget.SeekBar;import android.widget.TextView;public class MainActivity extends AppCompatActivity {    private MediaPlayer mediaPlayer;    private SeekBar seekBar;    private TextView tv_mian_stop;    private TextView tv_mian_start;    private int musicaction;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        tv_mian_start = (TextView) findViewById(R.id.tv_mian_start);        tv_mian_stop = (TextView) findViewById(R.id.tv_mian_stop);        seekBar = (SeekBar) findViewById(R.id.seekBar);        //进度条的监听事件        seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {            @Override            public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {                   //改变                 //每当进度条发生改变时tv_mian_start的值发生变化                 //new TimeUtil().secToTime()一个外部类（时间格式转化）                  tv_mian_start.setText(new TimeUtil().secToTime(mediaPlayer.getCurrentPosition()/1000)+"");            }            @Override            public void onStartTrackingTouch(SeekBar seekBar) {                   //开始            }            @Override            public void onStopTrackingTouch(SeekBar seekBar) {                   //结束                   //获取拖动结束之后的位置                int progrss=seekBar.getProgress();                mediaPlayer.seekTo(progrss);            }        });    }    public void isPlay(View view){        ImageButton imageButton= (ImageButton) view;        if (mediaPlayer==null){            mediaPlayer = MediaPlayer.create(this, R.raw.seve);            mediaPlayer.start();            //把图标修改为暂停的图标            imageButton.setImageResource(android.R.drawable.ic_media_pause);            //获取音乐的总时长            int muiscsum=mediaPlayer.getDuration();            //设置进度条的最大值为总时长             seekBar.setMax(muiscsum);             //执行一个多线程的耗时操作              new MyThread().start();             tv_mian_stop.setText(new TimeUtil().secToTime(muiscsum/1000)+"");        }else  if (mediaPlayer.isPlaying()){            mediaPlayer.pause();            imageButton.setImageResource(android.R.drawable.ic_media_play);        }else{            mediaPlayer.start();            imageButton.setImageResource(android.R.drawable.ic_media_pause);        }    }    class  MyThread extends Thread{        @Override        public void run() {            super.run();            //当进度条的当前值小于最大值时进度条发生改变           while(seekBar.getProgress()<=seekBar.getMax()){           //获取当前音乐播放的位置           musicaction = mediaPlayer.getCurrentPosition();            //让进度条动起来          seekBar.setProgress(musicaction);           }        }    }}

时间格式转化类：

public class TimeUtil {    public static String secToTime(int time) {        String timeStr = null;        int hour = 0;        int minute = 0;        int second = 0;        if (time <= 0)            return "00:00";        else {            minute = time / 60;            if (minute < 60) {                second = time % 60;                timeStr = unitFormat(minute) + ":" + unitFormat(second);            } else {                hour = minute / 60;                if (hour > 99)                    return "99:59:59";                minute = minute % 60;                second = time - hour * 3600 - minute * 60;                timeStr = unitFormat(hour) + ":" + unitFormat(minute) + ":" + unitFormat(second);            }        }        return timeStr;    }    private static String unitFormat(int i) {        String retStr = null;        if (i >= 0 && i < 10)            retStr = "0" + Integer.toString(i);        else            retStr = "" + i;        return retStr;    }}

真机效果图