使用android中的AIDL让Service与Activity通信[转]

http://linconz.net/archives/229.html

http://linconz.net/archives/314.html

首先建立一个ICallback.aidl文件,作为Activity中的回调方法

package com.zhang.test.service;

interface ICallback {
void showResult(int result);
}

然后再建立一个IService.aidl用来在Activity中接收Service回调,以及在Service中onBind时返回的Binder
注意:aidl中import不能写com.xxx.*,要写全类的路径

package com.zhang.test.service;

import com.zhang.test.service.ICallback;

interface IService {
    void registerCallback(ICallback cb);
    void unregisterCallback(ICallback cb);
}

接下来是service:
MainService.java

package com.zhang.test.service;

import android.app.Service;
import android.content.Intent;
import android.os.Handler;
import android.os.IBinder;
import android.os.Message;
import android.os.RemoteCallbackList;
import android.os.RemoteException;
import android.util.Log;

public class MainService extends Service {

    private static final String TAG = "MainService";

    private RemoteCallbackList<icallback> mCallbacks = new RemoteCallbackList<icallback>();

    private IService.Stub mBinder = new IService.Stub() {

        @Override
        public void unregisterCallback(ICallback cb){
            if(cb != null) {
                mCallbacks.unregister(cb);
            }
        }

        @Override
        public void registerCallback(ICallback cb){
            if(cb != null) {
                mCallbacks.register(cb);
            }
        }
    };

    @Override
    public IBinder onBind(Intent intent) {
        Log.d(TAG, "onBind");
        return mBinder;
    }

    @Override
    public void onCreate() {
        Log.d(TAG, "onCreate");
        //这里不知道为什么,直接使用callback方法回调showResult
        //mCallbacks.beginBroadcast()是0,需要用handler延迟1000毫秒
        //也许是在activity中binService太耗时的原因?
        mHandler.sendEmptyMessageDelayed(0, 1000);
        super.onCreate();
    }

    @Override
    public void onDestroy() {
        mHandler.removeMessages(0);
        mCallbacks.kill();
        super.onDestroy();
    }

    private void callBack() {
        int

  


  
    
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      2011-04-29 14:42
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