解析service（三）：音乐播放器

1.新建工程PlayService

2.设置main.xml

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" > <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="@string/hello" /> <Button android:id="@+id/start" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="Start Play" /> <Button android:id="@+id/stop" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="Stop Play" /> </LinearLayout>

3.新建Music.java

package com.iceskysl.PlayService; import android.app.Service; import android.content.Intent; import android.media.MediaPlayer; import android.os.IBinder; public class Music extends Service { private MediaPlayer player; @Override public IBinder onBind(Intent intent) { // TODO Auto-generated method stub return null; } public void onStart(Intent intent, int startId) { super.onStart(intent, startId); player = MediaPlayer.create(this, R.raw.gequ); player.start(); } public void onDestroy() { super.onDestroy(); player.stop(); } }

4.修改PlayService.java

package com.iceskysl.PlayService; import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; public class PlayService extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); Button button1 = (Button)findViewById(R.id.start); button1.setOnClickListener(startIt); Button button2 = (Button)findViewById(R.id.stop); button2.setOnClickListener(stopIt); } private OnClickListener startIt = new OnClickListener() { public void onClick(View v) { startService(new Intent("com.iceskysl.PlayService.START_AUDIO_SERVICE")); } }; private OnClickListener stopIt = new OnClickListener() { public void onClick(View v) { stopService(new Intent("com.iceskysl.PlayService.START_AUDIO_SERVICE")); finish(); } }; }

5.注册service

  <service android:name=".Music">
   <intent-filter>
    <action android:name="com.iceskysl.PlayService.START_AUDIO_SERVICE" />
    <category android:name="android.intent.category.default" />
   </intent-filter>
  </service>

6.加入资源/res/raw/gequ.mp3