android音乐播放器

淩亂°似流年 2023-06-11 09:30 29阅读 0赞

需求描述： 拥有播放，暂停，重新播放和停止等功能。 并且随着音乐的进度，进图条会自动更新。手动拖动进度条也会更新音乐的进度。

效果展示  
示例代码  
MainActivity  
package com.example.www.musicdemo;

import android.Manifest;  
import android.content.ComponentName;  
import android.content.Intent;  
import android.content.ServiceConnection;  
import android.media.MediaPlayer;  
import android.os.Handler;  
import android.os.IBinder;  
import android.os.Message;  
import android.support.v7.app.AppCompatActivity;  
import android.os.Bundle;  
import android.view.View;  
import android.widget.SeekBar;

import java.io.IOException;

public class MainActivity extends AppCompatActivity \{

private Iservice mIservice;  
    private static SeekBar mSeekBar;

public static Handler mHandler = new Handler() \{  
        @Override  
        public void handleMessage(Message msg) \{  
            //获取我们携带的数据  
            Bundle data = msg.getData();  
            //获取歌曲的总时长 和 当前进度  
            int duration = data.getInt("duration");  
            int currentPosition = data.getInt("currentPosition");

mSeekBar.setMax(duration);  
            mSeekBar.setProgress(currentPosition);  
        \}  
    \};

@Override  
    protected void onCreate(Bundle savedInstanceState) \{  
        super.onCreate(savedInstanceState);  
        setContentView(R.layout.activity\_main);  
//        requestPermissions(new String\[\]\{Manifest.permission.INTERNET\}, 100);

mSeekBar = (SeekBar) findViewById(R.id.seekBar);

Intent intent = new Intent(this, MyService.class);  
        startService(intent);

bindService(intent, conn, BIND\_AUTO\_CREATE);  
        // 设置seekbar的拖动时间监听  
        mSeekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() \{  
            @Override  
            public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) \{  
                mIservice.callSeekTo(seekBar.getProgress());  
            \}

@Override  
            public void onStartTrackingTouch(SeekBar seekBar) \{

@Override  
            public void onStopTrackingTouch(SeekBar seekBar) \{

\}  
        \});

public void playmusic(View view) \{  
        mIservice.callPlayMusic();  
    \}

public void onPause(View view) \{  
        mIservice.callPauseMusic();  
    \}

public void stopMusci(View view) \{  
        mIservice.stopMusic();  
    \}

public void replaymusic(View view) \{  
        mIservice.callRePlayMusic();  
    \}

ServiceConnection conn = new ServiceConnection() \{

@Override  
        public void onServiceConnected(ComponentName name, IBinder service) \{  
            mIservice = (Iservice) service;  
        \}

@Override  
        public void onServiceDisconnected(ComponentName name) \{

\}  
    \};

@Override  
    protected void onDestroy() \{  
        unbindService(conn);  
        super.onDestroy();  
    \}  
\}

MyService  
package com.example.www.musicdemo;

import android.app.Service;  
import android.content.Intent;  
import android.media.MediaPlayer;  
import android.os.Binder;  
import android.os.Bundle;  
import android.os.IBinder;  
import android.os.Message;

import java.util.Timer;  
import java.util.TimerTask;

public class MyService extends Service \{

private MediaPlayer mMp;

public MyService() \{  
    \}

@Override  
    public IBinder onBind(Intent intent) \{  
        // TODO: Return the communication channel to the service.

return new MyBinder();  
    \}

@Override  
    public void onCreate() \{  
        mMp = new MediaPlayer();

super.onCreate();  
    \}

@Override  
    public void onDestroy() \{  
        super.onDestroy();  
    \}

public void playMusic()\{  
        try \{

mMp.setDataSource("http://se.sycdn.kuwo.cn/resource/n1/77/39/2163816420.mp3");  
            mMp.prepare();  
            mMp.start();  
            updateSeekBar();  
        \} catch (Exception e) \{  
            e.printStackTrace();  
        \}

public void pauseMusic()\{  
        mMp.pause();  
    \}

public void stopMusic()\{  
        mMp.stop();  
    \}

public void updateSeekBar()\{  
        final int duration = mMp.getDuration();  
        final Timer timer = new Timer();  
        final TimerTask timerTask = new TimerTask() \{  
            @Override  
            public void run() \{  
                int currentPosition = mMp.getCurrentPosition();

Message msg = Message.obtain();  
                Bundle bundle = new Bundle(); // map  
                bundle.putInt("duration", duration);  
                bundle.putInt("currentPosition", currentPosition);

msg.setData(bundle);  
                MainActivity.mHandler.sendMessage(msg);  
            \}  
        \};

timer.schedule(timerTask, 100, 1000);  
        // 监听音乐播放完毕  
        mMp.setOnCompletionListener(new MediaPlayer.OnCompletionListener() \{  
            @Override  
            public void onCompletion(MediaPlayer mp) \{  
                System.out.println("歌曲播放完成了");  
                timer.cancel();  
                timerTask.cancel();  
            \}  
        \});

//实现指定播放的位置  
    public void seekTo(int position)\{  
        mMp.seekTo(position);  
    \}

private class MyBinder extends Binder implements Iservice\{

@Override  
        public void callPlayMusic() \{  
            playMusic();  
        \}

@Override  
        public void callPauseMusic() \{  
            pauseMusic();  
        \}

@Override  
        public void callRePlayMusic() \{  
            mMp.start();  
        \}

@Override  
        public void stopMusic() \{  
            MyService.this.stopMusic();  
        \}

@Override  
        public void callSeekTo(int position) \{

seekTo(position);  
        \}

\}  
\}

Iservice  
package com.example.www.musicdemo;

/\*\*  
 \* @author Administrator  
 \* @name mutilMedia  
 \* @class name：com.example.www.musicdemo  
 \* @class describe  
 \* @time 2019/4/8 11:23  
 \* @change  
 \* @chang time  
 \* @class describe  
 \*/  
public interface Iservice \{  
    //把想暴露的方法都定义在接口中  
    public void callPlayMusic();  
    public void callPauseMusic();  
    public void callRePlayMusic();  
    public void stopMusic();  
    public void callSeekTo(int position);  
\}

activity\_main.xml  
<?xml version="1.0" encoding="utf-8"?>  
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"  
    xmlns:app="http://schemas.android.com/apk/res-auto"  
    xmlns:tools="http://schemas.android.com/tools"  
    android:layout\_width="match\_parent"  
    android:layout\_height="match\_parent"  
    tools:context=".MainActivity">

</android.support.constraint.ConstraintLayout>  
  
AndroidManifest.xml  
<?xml version="1.0" encoding="utf-8"?>  
<manifest xmlns:android="http://schemas.android.com/apk/res/android"  
    package="com.example.www.musicdemo">

<uses-permission android:name="android.permission.INTERNET" />

</manifest>  
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原文链接：https://blog.csdn.net/ITzhongzi/article/details/89093584