给一个android aidl的源码

下面是一个简单的 Android AIDL 示例源代码：

定义一个 AIDL 接口：

// IMyAidlInterface.aidl
package com.example.aidl;

interface IMyAidlInterface {

    int add(int a, int b);

}

实现这个接口：

// MyAidlInterfaceImpl.java
package com.example.aidl;

import android.os.RemoteException;

public class MyAidlInterfaceImpl extends IMyAidlInterface.Stub {

    @Override
    public int add(int a, int b) throws RemoteException {
        return a + b;
    }
}

在 manifest 文件中声明服务：

<service
    android:name=".MyAidlInterfaceService"
    android:enabled="true"
    android:exported="true">
    <intent-filter>
        <action android:name="com.example.aidl.IMyAidlInterface" />
    </intent-filter>
</service>

创建服务类：

// MyAidlInterfaceService.java
package com.example.aidl;

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

public class MyAidlInterfaceService extends Service {

    private MyAidlInterfaceImpl myAidlInterfaceImpl;

    public MyAidlInterfaceService() {
    }

    @Override
    public IBinder onBind(Intent intent) {
        if (myAidlInterfaceImpl == null) {
            myAidlInterfaceImpl = new MyAidlInterfaceImpl();
        }
        return myAidlInterfaceImpl;
    }
}

现在，你就可以在你的应用程序中使用这个 AIDL 接口了：

// MainActivity.java
package com.example.aidl;

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 androidx.appcompat.app.AppCompatActivity;

public class MainActivity extends AppCompatActivity {

    private IMyAidlInterface myAidlInterface;
    private boolean isBound;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Intent intent = new Intent();
        intent.setAction("com.example.aidl.IMyAidlInterface");
        intent.setPackage("com.example.aidl");

        isBound = bindService(intent, serviceConnection, BIND_AUTO_CREATE);
    }

    private ServiceConnection serviceConnection = new ServiceConnection() {
        @Override
        public void onServiceConnected(ComponentName componentName, IBinder iBinder) {
            myAidlInterface = IMyAidlInterface.Stub.asInterface(iBinder);
            try {
                int result = myAidlInterface.add(1, 2);
                Log.d("MainActivity", "Result: " + result);
            } catch (RemoteException e) {
                e.printStackTrace();
            }
        }

        @Override
        public void onServiceDisconnected(ComponentName componentName) {
            myAidlInterface = null;
        }
    };

    @Override
    protected void onDestroy() {
        super.onDestroy();
        if (isBound) {
            unbindService(serviceConnection);
        }
    }
}