ANDROID_MARS学习笔记_S01原始版_016_Service

一、代码
1.xml
(1)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"
     >
 <Button
     android:id="@+id/startService"
     android:layout_width="fill_parent"
     android:layout_height="wrap_content"
     android:text="StartService"
     />
 <Button
     android:id="@+id/stopService"
     android:layout_width="fill_parent"
     android:layout_height="wrap_content"
     android:text="StopService"
     />
 </LinearLayout>

(2)AndroidManifest.xml

 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.service"
     android:versionCode="1"
     android:versionName="1.0" >

     <uses-sdk
         android:minSdkVersion="8"
         android:targetSdkVersion="21" />

     <application
         android:allowBackup="true"
         android:icon="@drawable/ic_launcher"
         android:label="@string/app_name"
         android:theme="@style/AppTheme" >
         <activity
             android:name=".TestActivity"
             android:label="@string/app_name" >
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />

                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
         <service android:name=".FirstService"/>
     </application>

 </manifest>

2.java
(1)TestActivity.java

 package com.service;

 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 TestActivity extends Activity {
     /** Called when the activity is first created. */
     private Button startServiceButton = null;
     private Button stopServiceButton = null;

     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.main);
         startServiceButton = (Button) findViewById(R.id.startService);
         startServiceButton.setOnClickListener(new StartServiceListener());
         stopServiceButton = (Button) findViewById(R.id.stopService);
         stopServiceButton.setOnClickListener(new StopServiceListener());
         System.out.println("Activity onCreate");
     }

     class StartServiceListener implements OnClickListener {
         @Override
         public void onClick(View v) {
             Intent intent = new Intent();
             intent.setClass(TestActivity.this, FirstService.class);
             startService(intent);
         }
     }

     class StopServiceListener implements OnClickListener {
         @Override
         public void onClick(View v) {
             Intent intent = new Intent();
             intent.setClass(TestActivity.this, FirstService.class);
             stopService(intent);
         }
     }
 }

(2)FirstService.java

 package com.service;

 import android.app.Service;
 import android.content.Intent;
 import android.os.Binder;
 import android.os.IBinder;

 public class FirstService extends Service {

     @Override
     public IBinder onBind(Intent intent) {
         // TODO Auto-generated method stub
         System.out.println("Service onBind");
         return null;
     }

     //当创建一个Servcie对象之后，会首先调用这个函数
     @Override
     public void onCreate() {
         // TODO Auto-generated method stub
         super.onCreate();
         System.out.println("Service onCreate");
     }

     @Override
     public int onStartCommand(Intent intent, int flags, int startId) {
         // TODO Auto-generated method stub
         System.out.println("flags--->" + flags);
         System.out.println("startId--->" + startId);
         System.out.println("Service onStartCommand");
         return START_NOT_STICKY;
     }

     @Override
     public void onDestroy() {
         // TODO Auto-generated method stubo
         System.out.println("Service onDestory");
         super.onDestroy();
     }
 }