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

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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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" 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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

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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");
} }