AIDL

android借助AIDL实现跨进程调用例子

1.新建一个项目android AidlServer

项目的包名为:com.example.aidlserver

2.在项目中新建一个AIDL文件 取名叫IRemoteService.aidl

package com.example.aidlserver;//定义服务的功能interface IRemoteService {int getPid();String getName();}

 

3.保存文件build下项目 或是使用aidl命令生成 IRemoteService.java

如果是在eclipse下自动build会在 gen目录下生成。

 

4.新建一个service

package com.example.aidlserver;import android.app.Service;import android.content.Intent;import android.os.IBinder;import android.os.RemoteException;import com.example.aidlserver.IRemoteService;public class RemoteService extends Service {@Overridepublic IBinder onBind(Intent intent) {// TODO Auto-generated method stubreturn new MyRemote();}class MyRemote extends IRemoteService.Stub{@Overridepublic int getPid() throws RemoteException {// TODO Auto-generated method stubreturn 2;}@Overridepublic String getName() throws RemoteException {// TODO Auto-generated method stubreturn "hello name";}} }

5.修改AndroidManifest.xml 添加  RemoteService声明

 <service android:name=".RemoteService">            <intent-filter >                <action android:name="com.example.aidlserver.RemoteService" />            </intent-filter>        </service>

 在这里我们设置一个Itent-filter 是为了可以使service被隐式调用

到这里service就完成了

 6.新建客户端项目AidlClient

7.在AidlClient醒目中新建包名 com.example.aidlserver

8.将第2步中建的AIDL copy到次包名下。

9.Build AidlClient项目

10.新建布局文件

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical"    android:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context=".MainActivity" >    <TextView        android:id="@+id/mainthread"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="@string/hello_world" />    <TextView        android:id="@+id/servicethread"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="@string/hello_world" />    <TextView        android:id="@+id/name"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="@string/hello_world" />    <Button        android:id="@+id/bind"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="bind" />    <Button        android:id="@+id/unbind"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_marginRight="86dp"        android:text="unbind" />    <Button        android:id="@+id/getname"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="getname" /></LinearLayout>

11.编辑Activity

package com.example.aidlclient;import android.app.Activity;import android.content.ComponentName;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.TextView;import com.example.aidlserver.IRemoteService;public class MainActivity extends Activity implements OnClickListener {IRemoteService services;ServiceConnection conn = new ServiceConnection() {@Overridepublic void onServiceDisconnected(ComponentName name) {// TODO Auto-generated method stubservices=null;Log.v("unbind","unbind");}@Overridepublic void onServiceConnected(ComponentName name, IBinder service) {// TODO Auto-generated method stubservices=(IRemoteService)IRemoteService.Stub.asInterface(service);try {String names = services.getName();nametxt.setText(names);servicethread.setText(Thread.currentThread().getName()+","+Thread.currentThread().getId());} catch (RemoteException e) {// TODO Auto-generated catch blocke.printStackTrace();}}};View  bind,unbind;TextView nametxt,mainthread,servicethread;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);nametxt=(TextView) findViewById(R.id.name);mainthread=(TextView) findViewById(R.id.mainthread);servicethread=(TextView) findViewById(R.id.servicethread);bind = findViewById(R.id.bind);unbind=findViewById(R.id.unbind);mainthread.setText(Thread.currentThread().getName()+","+Thread.currentThread().getId());bind.setOnClickListener(this);unbind.setOnClickListener(this);Log.v("threadId","threadId="+Thread.currentThread().getId());}@Overridepublic void onClick(View v) {// TODO Auto-generated method stubswitch (v.getId()) {case R.id.bind:Intent i = new Intent("com.example.aidlserver.RemoteService");bindService(i, conn , BIND_AUTO_CREATE);break;case R.id.unbind:unbindService(conn);break;default:break;}}}