AIDL初步

一、整体工程图

     

 二、首先创建在两个工程中都创建RemoteWebPage.aidl，然后分别在gen目录下生成了RemoteWebPage.java

package com.braincol.aidl.service;
 interface RemoteWebPage {
	String getCurrentPageUrl(); 	
}

三、在RemoteService实现接口，并且在onBind方法中返回IBinder对象。

package com.braincol.aidl.service;

import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
import android.os.RemoteException;
import android.util.Log;
/**
 * 
 * @author chenzheng_java
 * @description 提供服务的service
 *
 */
public class RemoteService extends Service {
	private final static String TAG = "RemoteService";
	@Override
	public IBinder onBind(Intent intent) {
		Log.i(TAG, "执行了OnBind");
		return new MyBinder();
	}

	private class MyBinder extends RemoteWebPage.Stub{
		@Override
		public String getCurrentPageUrl() throws RemoteException{
			return "http://www.cnblogs.com/hibraincol/";
		}
	}
}

四、ClientActivity中通过remoteWebPage = RemoteWebPage.Stub.asInterface(service)获取到RemoteWebPage，就可以调用其中的方法getCurrentPageUrl了。

package com.braincol.aidl.client;

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;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

import com.braincol.aidl.service.RemoteWebPage;

public class ClientActivity extends Activity implements OnClickListener {
	private final static String TAG="jltxgcy";
	Button btn_bind ;
	String actionName = "com.braincol.aidl.remote.webpage";
	RemoteWebPage remoteWebPage=null;
	String allInfo = null;
	boolean isBinded=false;

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);

		btn_bind = (Button) findViewById(R.id.btn_bind);
		btn_bind.setOnClickListener(this);

	}
	@Override
	protected void onPause(){
		super.onPause();
		if(isBinded){
			Log.d(TAG,"unbind");
			unbindService(connection);	
		}
	}
	private class MyServiceConnection implements ServiceConnection{

		@Override
		public void onServiceConnected(ComponentName name, IBinder service) {
			Log.i(TAG, "建立连接...");
			remoteWebPage = RemoteWebPage.Stub.asInterface(service);
			try {
				Log.d(TAG, remoteWebPage.getCurrentPageUrl());
			} catch (RemoteException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			
		}

		@Override
		public void onServiceDisconnected(ComponentName name) {
			Log.i(TAG, "onServiceDisconnected...");
		}

	}
	MyServiceConnection connection = new MyServiceConnection();

	@Override
	public void onClick(View v) {
		if(v==this.btn_bind){
			if(!isBinded){
				Intent intent  = new Intent(actionName);
				bindService(intent, connection, Context.BIND_AUTO_CREATE);	
				isBinded= true;
		}
	}

}
}

五、另外注意RemoteService的AndroidManifest.xml写法。

         ClientActivity的AndroidManifest.xml为：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.braincol.aidl.client"
      android:versionCode="1"
      android:versionName="1.0">
    <uses-sdk android:minSdkVersion="8" />

    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name=".ClientActivity"
                  android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

    </application>
</manifest>

        RemoteService的AndroidManifest.xml为：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.braincol.aidl.service"
      android:versionCode="1"
      android:versionName="1.0">
    <uses-sdk android:minSdkVersion="8" />

    <application android:icon="@drawable/icon" android:label="@string/app_name">

	<service android:name="RemoteService">
		<intent-filter>
			<action android:name="com.braincol.aidl.remote.webpage"/>
		</intent-filter>
	</service>

    </application>
</manifest>

         代码地址：https://github.com/jltxgcy/Demo