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1. 继承service类，重写方法service的 onBinder() 方法
2.在 Manifest中注册 service，设置过滤的url ( public static final String ACTION = "com.lql.service.ServiceDemo"; //自定义)
3. 启动service startservice(new Intent(ServiceDemo.ACITION));
<service android:name="com.example.androidtest.ServiceDemo" >
<intent-filter>
<action android:name="com.lql.service.ServiceDemo" />
</intent-filter>
</service>
4. 总结：service的生命周期
第一次启动：
04-09 21:46:09.637: I/ServiceDemo(9280): onCreate
04-09 21:46:09.637: I/ServiceDemo(9280): onStartCommand
04-09 21:46:09.637: I/ServiceDemo(9280): onStart
第二次启动：
04-09 21:46:49.369: I/ServiceDemo(9413): onStartCommand
04-09 21:46:49.369: I/ServiceDemo(9413): onStart
ServiceDemo.java
public class ServiceDemo extends Service {
private static final String TAG = "ServiceDemo" ;
public static final String ACTION = "com.lql.service.ServiceDemo";
@Override
public IBinder onBind(Intent arg0) {
// TODO Auto-generated method stub
return null;
}
@Override
public void onCreate() {
// TODO Auto-generated method stub
Log.i(TAG, "onCreate");
super.onCreate();
}
@Override
public void onDestroy() {
// TODO Auto-generated method stub
Log.i(TAG, "onDestroy");
super.onDestroy();
}
@Override
@Deprecated
public void onStart(Intent intent, int startId) {
// TODO Auto-generated method stub
Log.i(TAG, "onStart");
super.onStart(intent, startId);
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
// TODO Auto-generated method stub
Log.i(TAG, "onStartCommand");
return super.onStartCommand(intent, flags, startId);
}
}
StartService.java
public class StartService extends Activity {
Button start_service;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_start_service);
start_service = (Button) findViewById(R.id.start_service);
start_service.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
startService(new Intent(ServiceDemo.ACTION));
}
});
}
}
start_service_activity.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".StartService" >
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/hello_world" />
<Button
android:id="@+id/start_service"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/textView1"
android:layout_centerHorizontal="true"
android:layout_marginTop="110dp"
android:text="开启服务" />
</RelativeLayout>
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原文地址：http://www.cnblogs.com/childhooding/p/4412328.html
