// IMyAidlInterface.aidl
package com.example.mytest;
 
// Declare any non-default types here with import statements
 
interface IMyAidlInterface {
  /**
   * Demonstrates some basic types that you can use as parameters
   * and return values in AIDL.
   */
  void basicTypes(int anInt, long aLong, boolean aBoolean, float aFloat,
      double aDouble, String aString);
  String add(int x , int y);
}

package com.example.mytest;
import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
import android.os.RemoteException;
import android.util.Log;
public class FirstService extends Service {
  public FirstService() {
  }
  private static String Tag = "FirstService";
  @Override
  public IBinder onBind(Intent intent) {
    // TODO: Return the communication channel to the service.
    //throw new UnsupportedOperationException("Not yet implemented");
    Log.d(Tag,"service on bind");
    return mBinder;
  }
  @Override
  public void onCreate() {
    super.onCreate();
    Log.d(Tag,"OnCreate");
  }
  @Override
  public int onStartCommand(Intent intent, int flags, int startId) {
    Log.d(Tag,"onStartCommand");
    return START_STICKY;
  }
  @Override
  public boolean onUnbind(Intent intent) {
    Log.d(Tag,"onUnbind");
    return super.onUnbind(intent);
  }
  @Override
  public void onDestroy() {
    super.onDestroy();
    Log.d(Tag,"onDestroy");
  }
  IMyAidlInterface.Stub mBinder = new IMyAidlInterface.Stub(){
    @Override
    public void basicTypes(int anInt, long aLong, boolean aBoolean, float aFloat, double aDouble, String aString) throws RemoteException {
    }
    @Override
    public String add(int x, int y) throws RemoteException {
      Log.d(Tag,x + "--" + y);
      return String.valueOf(x + y);
    }
  };
}

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

 private Button btnStartService; 
  private Button btnBindService;
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
 
    initView();
  }
 
  private void initView() {
    tvId = (TextView) findViewById(R.id.tv_id);
 
    btnStartService = (Button) findViewById(R.id.btn_Start_Service);
    btnStartService.setOnClickListener(new View.OnClickListener() {
      @Override
      public void onClick(View view) {
        Intent intent = new Intent();
        intent.setPackage("com.example.mytest");
        intent.setAction("com.example.mytest.aidl.FirstService");
        startService(intent);
      }
    });
 
    btnBindService = (Button) findViewById(R.id.btnBindService);
    btnBindService.setOnClickListener(new View.OnClickListener() {
      @Override
        public void onClick(View view) {
            bind();
        }
    });
  
 
  private void bind(){
    Log.d(Tag, "bind");
    Intent intent = new Intent();
    intent.setPackage("com.example.mytest");
    if(controllerConnection != null){
      this.bindService(intent,controllerConnection,this.BIND_AUTO_CREATE);//綁定服務(wù)，建立鏈接
    }
    else {
      Log.d(Tag, "controllerConnection != null");
    }
  }
 
  private void unbind(){
    if(controllerConnection != null && myAIDLController.asBinder().isBinderAlive()){
      try{
        Log.d(Tag, "this.unbindService(controllerConnection);");
        this.unbindService(controllerConnection);
      } catch (Exception localException) {
        Log.w(Tag, "unbind Exception localException");
      }
    }
  }

private ServiceConnection controllerConnection = new ServiceConnection(){
 
    @Override
    public void onServiceConnected(ComponentName componentName, IBinder iBinder) {
      Log.d(Tag,"onServiceConnected");
 
      myAIDLController = IMyAidlInterface.Stub.asInterface(iBinder);
      if (myAIDLController != null) {
        try {
          Log.d(Tag, "ServiceConnection success");
          Toast.makeText(MainActivity.this, "ServiceConnection success", Toast.LENGTH_LONG).show();
        } catch (Exception localException) {
          Log.w(Tag, "Exception localException");
        }
      }
    }
 
    @Override
    public void onServiceDisconnected(ComponentName componentName) {
      Log.d(Tag,"onServiceDisconnected");
      Toast.makeText(MainActivity.this, "onServiceDisconnected", Toast.LENGTH_LONG).show();
 
      myAIDLController = null;
    }
 
    @Override
    public void onBindingDied(ComponentName name) {
      Log.d(Tag,"onBindingDied");
    }
 
    @Override
    public void onNullBinding(ComponentName name) {
      Log.d(Tag,"onNullBinding");
    }
  };

 btnServiceFunc = (Button) findViewById(R.id.btnServiceFunc);
    btnServiceFunc.setOnClickListener(new View.OnClickListener() {
      @Override
      public void onClick(View view) {
        try {
          Log.d(Tag, String.valueOf( myAIDLController.add(1,2)));
        } catch (RemoteException e) {
          e.printStackTrace();
        }
      }
    });