Android音乐播放器简单示例

放置我们的媒体文件(jack.mp3)

编写我们的媒体Service类

package org.snailteam;import android.app.Service;import android.content.Intent;import android.media.MediaPlayer;import android.os.IBinder;import android.util.Log;import android.widget.Toast;public class MediaPlayerService extends Service {private static final String TAG = "音乐播放器服务";MediaPlayer player;public IBinder onBind(Intent intent) {return null;} public void onCreate() {//服务初始化， Toast.makeText(this, "MediaPlayerService created", Toast.LENGTH_LONG).show();        Log.i(TAG, "onCreate");            player = MediaPlayer.create(this,R.raw.jack);//此处引用到我们的mp3文件,raw文件夹的。        player.setLooping(false);                } public void onStart(Intent intent, int startId) { Toast.makeText(this, " MediaPlayerService Start", Toast.LENGTH_LONG).show();        Log.i(TAG, "onStart");        player.start();} public void onDestroy() { Toast.makeText(this, " MediaPlayerService Stoped", Toast.LENGTH_LONG).show();        Log.i(TAG, "onDestroy");        player.stop();}}

输入代码R.raw.jack音乐文件没有提示时，需要修复一下

注册我们的Service组件到程序中

配置文件会多一行，注意.MediaPlayerService前面的.

我们的界面图设计如下，主要是两个按钮

主程序添加代码

package org.snailteam;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.util.Log;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;public class application extends Activity implements OnClickListener{//我的主程序类是applicationprivate static final String TAG = "主程序";Button buttonStart, buttonStop;    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        buttonStart = (Button)findViewById(R.id.buttonStart);        buttonStop = (Button)findViewById(R.id.buttonStop);        buttonStart.setOnClickListener(this);        buttonStop.setOnClickListener(this);    } public void onClick(View view) { switch (view.getId()) {//判断哪个按钮        case R.id.buttonStart:            Log.i(TAG, "onClick: starting service");            startService(new Intent(this, MediaPlayerService.class));//引用我们自己写的媒体服务组件            break;        case R.id.buttonStop:            Log.i(TAG, "onClick: stopping service");            stopService(new Intent(this, MediaPlayerService.class));            break;}}}

之后大家可以运行试试效果。

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