android 中activity调用远程service中的方法之 aidl的使用

服务端：只有服务，没有界面

1.编写interface文件，复制到 .aidl 文件中，并去掉其中的public 等修饰符。系统会自动在gen目录下生成对应的java文件  （对应本地调用中的接口文件）

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AIEbCgxvlPLfd7uhkZIJECBAgACBmwoMPXqzSbrp1aFsAgQIECBwc4HhO0rJyaO3m18tyidAgAABAjcTGN4oxbtK6Tj+Dbib2SmXAAECBAgQuLjA0KO3ZOAP4V78SlAeAQIECBAg8EVgeKP0ZaQTBAgQIECAAIGLC7z//P7z8+Pbx2KZ8TFbusP068evtzw2/QmT9JX+hIkvAgQIECBAgMAVBIY3SrVibZRqKs4RIECAAAECVxHw6O0qK6kOAgQIECBAYHMBG6XNSQUkQIAAAQIEriIw/PEASwX/+7v3Ji0ZaSdAgAABAgTOJeCO0rnWS7YECBAgQIDAjgI2Sjtim4oAAQIECBA4l4CN0rnWS7YECBAgQIDAjgI2Sjtim4oAAQIECBA4l4CN0rnWS7YECBAgQIDAjgI2Sjtim4oAAQIECBA4l4CN0rnWS7YECBAgQIDAjgI2Sjtim4oAAQIECBA4l4CN0rnWS7YECBAgQIDAjgI2Sjtim4oAAQIECBA4l4CN0rnWS7YECBAgQIDAjgI2Sjtim4oAAQIECBA4l4CN0rnWS7YECBAgQIDAjgI2Sjtim4oAAQIECBA4l4CN0rnWS7YECBAgQIDAjgI2Sjtim4oAAQIECBA4l4CN0rnWS7YECBAgQIDAjgI2Sjtim4oAAQIECBA4l4CN0rnWS7YECBAgQIDAjgI2Sjtim4oAAQIECBA4l4CN0rnWS7YECBAgQIDAjgI2Sjtim4oAAQIECBA4l4CN0rnWS7YECBAgQIDAjgI2Sjtim4oAAQIECBA4l4CN0rnWS7YECBAgQIDAjgI2Sjtim4oAAQIECBA4l4CN0rnWS7YECBAgQIDAjgI2Sjtim4oAAQIECBA4l4CN0rnWS7YECBAgQIDAjgI2Sjtim4oAAQIECBA4l4CN0rnWS7YECBAgQIDAjgI2Sjtim4oAAQIECBA4l4CN0rnWS7YECBAgQIDAjgI2Sjtim4oAAQIECBA4l4CN0rnWS7YECBAgQIDAjgL/BRk9rrnZqPm2AAAAAElFTkSuQmCC" 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2.编写service，其中内部类的自定义bind 只需要继承Stub即可。（本地调用则需要继承Bind 并实现 interface接口）

 public class PayService extends Service {

     @Override
     public IBinder onBind(Intent intent) {
         return new Pay();
     }
     public class Pay extends  Stub {
         @Override
         public void pay(String userName, String password, String sendToAccount, float money) throws RemoteException {
             toPay(userName, password, sendToAccount, money);
         }
     }
     public void toPay(String userName, String password, String sendToAccount, float money){
         System.out.println(userName + "@" + password + "  to " + sendToAccount + "$" + money);
     }

 }

3.清单文件中注册，添加intent-filter 项，以便于被调用

　　<service android:name="cn.pay.service.PayService" >
            <intent-filter>
                <action android:name="cn.pay.service.PayService" />
            </intent-filter>
        </service>

========================================================分隔线========================================================

客户端：

　　在activity中自定义ServiceConnection的内部类。转化接口实例的方法用 接口类名.Stub.asInterface(service)  (本地调用是直接将service强转为接口实例)

　

 package com.example.aidlpayclient;

 import cn.pay.aidl.IPayService;
 import android.os.Bundle;
 import android.os.IBinder;
 import android.os.RemoteException;
 import android.app.Activity;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
 import android.content.ServiceConnection;
 import android.view.Menu;
 import android.view.View;

 public class MainActivity extends Activity {

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

         //绑定服务
         conn=new MyServiceConnection();
         bindService(new Intent("cn.pay.service.PayService"), conn, Context.BIND_AUTO_CREATE);
     }

     private MyServiceConnection conn = null;
     private IPayService iPayService;

     private class MyServiceConnection implements ServiceConnection {

         @Override
         public void onServiceConnected(ComponentName name, IBinder service) {
             iPayService = IPayService.Stub.asInterface(service);
             System.out.println("绑定成功");
         }

         @Override
         public void onServiceDisconnected(ComponentName name) {
             iPayService = null;
         }

     }

     public void pay(View v) {
         System.out.println("begin pay");
         try {
             //调用方法.
             iPayService.pay("a", "b", "c", 100);
         } catch (RemoteException e) {
             e.printStackTrace();
         }
         System.out.println("end pay");
     }

 }