Android的AIDL进程间通信

1、把远程服务的方法抽取成一个单独的接口java文件package com.greetty.remoteservice;

interface PublicBusiness {

void qianXian();
}2、把接口java文件的后缀名改成aidl
3、在自动生成的PublicBusiness.java文件中，有一个静态抽象类Stub，它已经继承了binder类，实现了publicBusiness接口，

这个类就是新的中间人

4、被启动的服务的代码

package com.greetty.remoteservice;

import com.greetty.remoteservice.PublicBusiness.Stub;

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

public class RemoteService extends Service {

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

class furong extends Stub{

@Override
public void qianXian() {
// TODO Auto-generated method stub
test();
}

}

public void test(){
System.out.println("AIDL远程启动了服务，调用了远程方法");
}
}


5、把aidl文件复制粘贴到启动服务的项目，粘贴的时候注意，aidl文件所在的包名必须跟被启动的服务所在项目中aidl所在的包名一致

6、在启动服务的项目中，强转中间人对象时，直接使用Stub.asInterface（）

7、启动远程服务，调用远程服务的方法代码

package com.greetty.runremote;

import com.greetty.remoteservice.PublicBusiness;
import com.greetty.remoteservice.PublicBusiness.Stub;

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

public class MainActivity extends Activity {

private MyserviceConn conn;

PublicBusiness pb;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
conn = new MyserviceConn();
}

//绑定启动服务
public void click3(View v){
Intent intent = new Intent();
intent.setAction("com.itheima.remote");
bindService(intent, conn, BIND_AUTO_CREATE);
}
//解绑服务
public void click4(View v){
unbindService(conn);
}
class MyserviceConn implements ServiceConnection{

@Override
public void onServiceConnected(ComponentName name, IBinder service) {
//把Ibinder中间人对象强转成publicbusiness
pb = Stub.asInterface(service);
}

@Override
public void onServiceDisconnected(ComponentName name) {
// TODO Auto-generated method stub

}

}

//调用远程方法
public void click5(View v){
try {
pb.qianXian();
} catch (RemoteException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}