进程间通信---AIDL的使用实例

标签：通信   aidl   进程间通信   

1.新建IRemoteService.aidl

package com.tang.remoteservicedemo;
interface IRemoteService {
 String getInfo();
}

2.新建IService“实现”IRemoteService“接口”

package com.tang.remoteservicedemo;

import java.util.Date;

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

public class IService extends Service
{
	private IBinder iBinder = new IRemoteService.Stub() {
		@Override
		public String getInfo() throws RemoteException {
			// TODO Auto-generated method stub
			return new Date(System.currentTimeMillis()).toLocaleString()+"  来自远程服务的信息！";
		}
	};
	@Override
	public IBinder onBind(Intent intent) {
		// TODO Auto-generated method stub
		return iBinder;
	}
}

3.配置IService供其他进程调用

        <service android:name="com.tang.remoteservicedemo.IService"
            android:process=":remote">
            <intent-filter>
                <action android:name="com.tang.remoteservicedemo.IService"/>
            </intent-filter>
        </service>

通过前面三个步骤，这个含有getInfo()方法的service就可以给别人调用了，下面在客户端调用它

4.新建一个ClientDemo工程将含有IRemoteService.aidl的那个包全部拷贝到src下，只留下aidl文件，其他全删除。

5.新建MainActivity，其他就是绑定service的操作了

package com.tang.clientdemo;

import java.util.Timer;
import java.util.TimerTask;

import com.tang.remoteservicedemo.IRemoteService;

import android.app.Activity;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.Bundle;
import android.os.IBinder;
import android.os.RemoteException;
import android.util.Log;


public class MainActivity extends Activity {

	private IRemoteService iService = null;
	private boolean isBinded =false;
	
	ServiceConnection conn = new ServiceConnection() {
		
		@Override
		public void onServiceDisconnected(ComponentName name) {
			// TODO Auto-generated method stub
			isBinded = false;
			iService = null;
		}
		
		@Override
		public void onServiceConnected(ComponentName name, IBinder service) {
			// TODO Auto-generated method stub
			iService = IRemoteService.Stub.asInterface(service);
			isBinded = true;
		}
	};
	
	public void doBind() 
	{
	    Intent intent = new Intent("com.tang.remoteservicedemo.IService");
	    bindService(intent, conn, Context.BIND_AUTO_CREATE);
	}
	
	public void doUnbind() 
	{
	    if (isBinded) 
	    {
	      unbindService(conn);
	      iService = null;
	      isBinded = false;
	    }
	}
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		new Thread(new Runnable() {		
			@Override
			public void run() {
				// TODO Auto-generated method stub
				doBind();
			}
		}).start();
		Timer timer = new Timer();
		timer.schedule(task, 0, 2000);
		
	}
	TimerTask task = new TimerTask() {
		@Override
		public void run() {
			// TODO Auto-generated method stub
			if(iService!=null)
			{
				try {
					Log.i("AAA", iService.getInfo());
				} catch (RemoteException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}
			else
			{
				Log.i("AAA", "iService!=null");
			}
			
		}
	};

	@Override
	protected void onDestroy() {
		// TODO Auto-generated method stub
		doUnbind();
		task.cancel();
		super.onDestroy();
	}
}

为什么会有一个为空的Log呢，因为绑定也是要时间的嘛....

简单的AIDL的使用就这么多了

源码下载

进程间通信---AIDL的使用实例

标签：通信   aidl   进程间通信   

原文地址：http://blog.csdn.net/tangnengwu/article/details/40824539