AIDL--------应用之间的通信接口

在下面例子中04Service中添加aidl包包里定义好接口 接口文件名后缀为.aidl

package com.example.aidl;

interface IRemoteService
{
void print(String msg);
String getName();

}

在04 client中也有这样一个包 这个包就成为一个接口   Service里实现接口  client中可以调用注意

Service中定义好service的action  client中绑定服务时用这个action

<service android:name=".RemoteService">
<intent-filter >
<action android:name="com.example.service04aidl.RemoteService"/>
</intent-filter>
</service>

绑定时用到

bindService(new Intent("com.example.service04aidl.RemoteService"),conn,BIND_AUTO_CREATE);

客户端每次绑定都会创建一个与客户端activity绑定的Service  activity销毁服务也会销毁

 package com.example.service04_client;

 import android.app.Activity;
 import android.content.ComponentName;
 import android.content.Intent;
 import android.content.ServiceConnection;
 import android.os.Bundle;
 import android.os.IBinder;
 import android.os.RemoteException;
 import android.view.View;
 import android.widget.Toast;

 import com.example.aidl.IRemoteService;

 public class MainActivity extends Activity {

     IRemoteService remoteService;
     ServiceConnection conn=new ServiceConnection() {
         @Override
         public void onServiceDisconnected(ComponentName name) {

         }

         @Override
         public void onServiceConnected(ComponentName name, IBinder service) {
             remoteService=IRemoteService.Stub.asInterface(service);
         }
     };

     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);

         bindService(new Intent("com.example.service04aidl.RemoteService"),conn,BIND_AUTO_CREATE);
     }
     public void print(View v) throws RemoteException
     {
         if(remoteService!=null)
         remoteService.print("hello,service");
     }
     public void getRemoteName(View v) throws RemoteException
     {
         if(remoteService!=null)
         Toast.makeText(getApplicationContext(), remoteService.getName(), 1).show();
     }

 }

04Service—mainActivity

 package com.example.service04aidl;

 import com.example.aidl.IRemoteService;

 import android.app.Service;
 import android.content.Intent;
 import android.os.IBinder;
 import android.os.RemoteException;
 import android.util.Log;

 public class RemoteService extends Service {

     private IRemoteService.Stub stub=new IRemoteService.Stub() {
         @Override
         public void print(String msg) throws RemoteException {
             Log.i("debug", "RemoteService---"+msg);
         }
         @Override
         public String getName() throws RemoteException {
             return "RemoteService";
         }
     };
     @Override
     public IBinder onBind(Intent intent) {
         // TODO Auto-generated method stub
         return stub;
     }

 }

04Service--RemoteService

 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.example.service04aidl"
     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.service04aidl.MainActivity"
             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=".RemoteService">
             <intent-filter >
                 <action android:name="com.example.service04aidl.RemoteService"/>
             </intent-filter>
         </service>
     </application>

 </manifest>

04----xml

 package com.example.service04_client;

 import android.app.Activity;
 import android.content.ComponentName;
 import android.content.Intent;
 import android.content.ServiceConnection;
 import android.os.Bundle;
 import android.os.IBinder;
 import android.os.RemoteException;
 import android.view.View;
 import android.widget.Toast;

 import com.example.aidl.IRemoteService;

 public class MainActivity extends Activity {

     IRemoteService remoteService;
     ServiceConnection conn=new ServiceConnection() {
         @Override
         public void onServiceDisconnected(ComponentName name) {

         }

         @Override
         public void onServiceConnected(ComponentName name, IBinder service) {
             remoteService=IRemoteService.Stub.asInterface(service);
         }
     };

     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);

         bindService(new Intent("com.example.service04aidl.RemoteService"),conn,BIND_AUTO_CREATE);
     }
     public void print(View v) throws RemoteException
     {
         if(remoteService!=null)
         remoteService.print("hello,service");
     }
     public void getRemoteName(View v) throws RemoteException
     {
         if(remoteService!=null)
         Toast.makeText(getApplicationContext(), remoteService.getName(), 1).show();
     }

 }

client