AIDL简单的使用

AIDL:Android Interface Definition Language,即Android接口定义语言
主要用于进程间的通信

首先是本地调用服务：
1.定义要暴露出来的接口方法:

public interface Iservice {
    public void callControlTemp();
    public void callControlPower();
}

2.完成普通服务的创建：

public class ServiceTest extends Service {

    @Override
    public IBinder onBind(Intent intent) {
        return new MyBinder();
    }

    public void controlTemp(){
        System.out.println("温控控制！！！");
    }

    public void controlPower(){
        System.out.println("电源控制！！！");
    }

    public class MyBinder extends IService{
        @Override
        public void callControlTemp() {
            controlTemp();
        }
        
        public void callControlPower(){
            controlPower();
        }
    }
}

3.完成本地Activity

public class MainActivity extends Activity {
    private MyConn conn;
    private Iservice binder;
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Intent intent = new Intent(this, servicetest.class);
        conn = new MyConn();
        startService(intent);
        bindService(intent, conn, BIND_AUTO_CREATE);
    }  

    public class MyConn implements ServiceConnection{

        @Override
        public void onServiceConnected(ComponentName name, IBinder service) {
            binder = (IService)service;
        }

        @Override
        public void onServiceDisconnected(ComponentName name) {
            
        }
    }
    
    public void clickPower(View v){
        try {
            binder.callControlPower();
        } catch (RemoteException e) {
            e.printStackTrace();
        }
    }
    
    public void clickTemp(View v){
        try {
            binder.callControlTemp();
        } catch (RemoteException e) {
            e.printStackTrace();
        }
    } 
    
    @Override
    protected void onDestroy() {
        super.onDestroy();
        if(conn != null){
            unbindService(conn);
        }
    }
}

输出结果，本地服务调用成功

=============================================================
接下来修改下代码，将本地服务改为远程服务端；
1.将要暴露的接口文件IService.java改为IService.aidl；
2.去掉IService.aidl中的所有修饰符(piublic)；
3.修改服务的MyBinder继承自动生成的Stub类（注：此时MyBinder要实现的就是远程服务暴露的方法）；

public class servicetest extends Service {

    @Override
    public IBinder onBind(Intent intent) {
        return new MyBinder();
    }

    public void controlTemp(){
        System.out.println("温控控制！！！");
    }

    public void controlPower(){
        System.out.println("电源控制！！！");
    }

    public class MyBinder extends Stub{
        @Override
        public void callControlTemp() {
            controlTemp();
        }
        
        @Override
        public void callControlPower(){
            controlPower();
        }
    }
}

4.修改AndroidMainfest.xml；

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

5.在远程客户端中开启服务；

然后完成本地调用客户端的实现：
1.新建一个包，包名为IService.aidl所在的包名，然后将IService.aidl复制到这个包中；
2.通过Stub类中的asInterface方法，将service返回至client的对象转换为IService.Stub；

public class MyConn implements ServiceConnection{

        @Override
        public void onServiceConnected(ComponentName name, IBinder service) {
            binder = Stub.asInterface(service);
        }

        @Override
        public void onServiceDisconnected(ComponentName name) {
            
        }
    }

3.完成本地Activity代码；

public class MainActivity extends Activity {
    private MyConn conn;
    private Iservice binder;
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Intent intent = new Intent();
        intent.setAction("com.zyw.service");
        conn = new MyConn();
        bindService(intent, conn, BIND_AUTO_CREATE);
    }  

    public class MyConn implements ServiceConnection{

        @Override
        public void onServiceConnected(ComponentName name, IBinder service) {
            binder = Stub.asInterface(service);
        }

        @Override
        public void onServiceDisconnected(ComponentName name) {
            
        }
    }
    
    public void clickPower(View v){
        try {
            binder.callControlPower();
        } catch (RemoteException e) {
            e.printStackTrace();
        }
    }
    
    public void clickTemp(View v){
        try {
            binder.callControlTemp();
        } catch (RemoteException e) {
            e.printStackTrace();
        }
    } 
    
    @Override
    protected void onDestroy() {
        super.onDestroy();
        if(conn != null){
            unbindService(conn);
        }
    }
}

本地调用远程服务结果：

这里写图片描述