前台service和远程service代码详解

来源：互联网发布：政府网络舆情管理编辑：程序博客网时间：2024/06/03 12:37

因为之前对service不是很熟，所以进一步研究了一下

//有时候需要前台service，如墨迹天气（在状态栏中）.下面是简单的一个前台Service

public class MyService extends Service {@Overridepublic IBinder onBind(Intent intent) {return null;}@Overridepublic void onCreate() {super.onCreate();System.out.println("------------->执行");new Thread(new Runnable() {@Overridepublic void run() {Notification notification = new Notification(R.drawable.ic_launcher, "有通知到来", System.currentTimeMillis());          Intent notificationIntent = new Intent(MyService.this, Main.class);          PendingIntent pendingIntent = PendingIntent.getActivity(MyService.this, 0, notificationIntent, 0); //设置信息内容           notification.setLatestEventInfo(MyService.this, "这是通知的标题", "这是通知的内容", pendingIntent);          startForeground(1, notification);  //让Service变成一个前台Service        }}).start();}}

/*************************************************************AIDL Service**********************************************************************************************************************/

服务端：新建一个工程：AIDL_Service

新建一个aidl文件

package com.example.aidl;interface AIDLservice{      int plus(int a, int b);}

//MyService.java

public class AIDLservice extends Service {@Overridepublic IBinder onBind(Intent intent) {return stub;}//在AIDLservice.java文件可知道Stub是Binder的子类com.example.aidl.AIDLservice.Stub stub=new Stub() {@Overridepublic int plus(int a, int b) throws RemoteException {return a+b;}};}

//androidmanifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="com.example.aidl_service"    android:versionCode="1"    android:versionName="1.0" >    <uses-sdk        android:minSdkVersion="8"        android:targetSdkVersion="17" />    <application        android:allowBackup="true"        android:icon="@drawable/ic_launcher"        android:label="@string/app_name"        android:theme="@style/AppTheme" >        <activity            android:name="com.example.aidl_service.Main"            android:label="@string/app_name" >            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity>        <!--添加此属性：android:process=":remote" 表示为远程service-->        <service android:name="com.example.aidl_service.AIDLservice"                 android:process=":remote">            <intent-filter >                 <!--此处体现了隐示Intent-->                <action android:name="com.example.aidl_service.startAIDLservice"/>            </intent-filter>        </service>    </application></manifest>

//客户端：新建工程AIDL_Client

/** * 要实现远程Service的功能，必须将远程Service端的aidl文件原始的复制到客户端的src下*/public class Main extends Activity {     private Button button;private AIDLservice aidLservice;//远程Service接口@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);//匿名类,主要是通过该匿名类与service通信final ServiceConnection conn=new ServiceConnection() {@Overridepublic void onServiceDisconnected(ComponentName name) {}@Overridepublic void onServiceConnected(ComponentName name, IBinder service) {try {aidLservice=AIDLservice.Stub.asInterface(service); int num=aidLservice.plus(5, 4);Log.d("------------>num=", num+"");} catch (Exception e) {System.out.println("连接失败！！！");e.printStackTrace();}}};button=(Button)this.findViewById(R.id.button);button.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {Intent intent=new Intent();intent.setAction("com.example.aidl_service.startAIDLservice");bindService(intent, conn, BIND_AUTO_CREATE);}});}}

猛击下载

0 0