Android Servicer 播放音乐

//先在res下建一个文件夹raw,将音乐放入其中

//以一个为例

//myhome.mp3

//在Xml中添加3个按钮

 <Button        android:id="@+id/button1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="播放" />    <Button        android:id="@+id/button2"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="暂停" />    <Button        android:id="@+id/button3"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="停止" />

//可以先键ServiceDDDD,继承Service

public class ServiceDDDD extends Service {private MediaPlayer mediaPlayer;@Overridepublic IBinder onBind(Intent arg0) {// TODO Auto-generated method stubreturn null;}@Overridepublic void onCreate() {// TODO Auto-generated method stubsuper.onCreate();mediaPlayer = MediaPlayer.create(this, R.raw.myhome);}@Overridepublic int onStartCommand(Intent intent, int flags, int startId) {// TODO Auto-generated method stubint extra = intent.getIntExtra("command", 0);switch (extra) {case 1:mediaPlayer.start();break;case 2:if (mediaPlayer != null && mediaPlayer.isPlaying()) {mediaPlayer.pause();}break;case 3:if (mediaPlayer != null) {mediaPlayer.stop();}break;default:break;}return super.onStartCommand(intent, flags, startId);}@Overridepublic void onDestroy() {// TODO Auto-generated method stubsuper.onDestroy();if (mediaPlayer != null) {mediaPlayer.release();mediaPlayer = null;}}}

//MainActivity.java

public class MainActivity extends Activity implements OnClickListener {private Button button1, button2, button3;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);button1 = (Button) findViewById(R.id.button1);button2 = (Button) findViewById(R.id.button2);button3 = (Button) findViewById(R.id.button3);button1.setOnClickListener(this);button2.setOnClickListener(this);button3.setOnClickListener(this);}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.main, menu);return true;}@Overridepublic void onClick(View arg0) {// TODO Auto-generated method stubIntent intent = new Intent(this, ServiceDDDD.class);switch (arg0.getId()) {case R.id.button1:intent.putExtra("command", 1);break;case R.id.button2:intent.putExtra("command", 2);break;case R.id.button3:intent.putExtra("command", 3);break;default:break;}startService(intent);}}