[置顶] android AIDL 进程间通信

 

1.定义aidl文件

a.ITestService.aidl

 

package com.open.aidl.service;

import com.open.aidl.service.ITestServiceCallback;

interface ITestService {

    void registerCallback(ITestServiceCallback cb);
    
    void unregisterCallback(ITestServiceCallback cb);
    
    int request(inout Bundle mBundle);
}

b.ITestServiceCallback.aidl

package com.open.aidl.service;

oneway interface ITestServiceCallback 
{
    void onResponse(inout Bundle mBundle);
}

2.定义Activity

<

package com.open.aidl;

import android.app.Activity;
import android.content.ComponentName;
import android.content.Context;
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 com.open.aidl.service.ITestService;
import com.open.aidl.service.ITestServiceCallback;
import com.open.aidl.service.TestService;

public class MainActivity extends Activity {

	private final String TAG="MainActivity";
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		
		init();
	}
	
	private void init()
	{
		findViewById(R.id.bindBtn).setOnClickListener(clickListener);
		findViewById(R.id.unBindBtn).setOnClickListener(clickListener);
	}
	
	View.OnClickListener clickListener=new OnClickListener() {
		
		@Override
		public void onClick(View v) {
			switch(v.getId())
			{
				case R.id.bindBtn:
					bind();
					break;
					
				case R.id.unBindBtn:
					unbind();
			}
			
		}
	};
	
	private void bind()
	{
		Intent mIntent=new Intent(TestService.class.getName());
		bindService(mIntent, mServerConnection, Context.BIND_AUTO_CREATE);
	}
	
	private void unbind()
	{
		if(null!=mService)
		{
			try {
				mService.unregisterCallback(mCallBack);
			} catch (RemoteException e) {
				e.printStackTrace();
			}
			unbindService(mServerConnection);
		}
	}
	
	@Override
	protected void onDestroy() {
		unbind();
		super.onDestroy();
	}

	private ITestService mService=null;
	private ServiceConnection mServerConnection=new ServiceConnection() 
	{
		
		@Override
		public void onServiceDisconnected(ComponentName name) {
Log.v(TAG, "onServiceDisconnected");
			mService=null;
		}
		
		@Override
		public void onServiceConnected(ComponentName name, IBinder service) {
Log.v(TAG, "onServiceConnected");
			mService=ITestService.Stub.asInterface(service);
			try {
				mService.registerCallback(mCallBack);
				mService.request(null);
			} catch (RemoteException e) {
				e.printStackTrace();
			}catch (Exception e) {
				e.printStackTrace();
			}
		}
	};
	
	private ITestServiceCallback mCallBack=new ITestServiceCallback.Stub() {
		
		@Override
		public void onResponse(Bundle mBundle) throws RemoteException {
Log.v(TAG,"call from service");
			}
		};
}

3.定义Service.

package com.open.aidl.service;

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

/**
 * 后台服务类
 * @author DexYang
 *
 */
public class TestService extends Service {

	private final String TAG="TestService";
	private Object mCallbacksLock=new Object();
	
	private Handler mHandler=new Handler();
	
	@Override
	public void onCreate() {
		super.onCreate();
Log.v(TAG, "onCreate()");
	}
	
	@Override
    public void onStart(Intent intent, int startId) {
Log.v(TAG, "onStart()");
        handleCommand(intent);
    }

	@Override
	public int onStartCommand(Intent intent, int flags, int startId) {
Log.v(TAG, "onStartCommand()");
		handleCommand(intent);
		return START_STICKY;
	}

	private void handleCommand(Intent intent)
	{
		
	}
	
	@Override
	public IBinder onBind(Intent arg0) {
Log.v(TAG, "onBind()");
		if(null!=arg0&&TestService.class.getName().equals(arg0.getAction()))
		{
			handleCommand(arg0);
		}
		return mBinder;
	}

    @Override
	public void onRebind(Intent intent) {
Log.v(TAG, "onRebind()");
		if(TestService.class.getName().equals(intent.getAction()))
		{
			handleCommand(intent);
		}
		super.onRebind(intent);
	}
    
	@Override
	public boolean onUnbind(Intent intent) {
Log.v(TAG, "onUnbind()");
		return true;
	}

	@Override
	public void onDestroy() {
Log.v(TAG, "onDestroy()");
		mCallbacks.kill();
		android.os.Process.killProcess(android.os.Process.myPid());
		super.onDestroy();
	}
	
	/**
	 * Binder 相关
	 */
	private final CusRemoteCallbackList<ITestServiceCallback> mCallbacks= new CusRemoteCallbackList<ITestServiceCallback>();
	private ITestService.Stub mBinder=new ITestService.Stub() {

		@Override
		public int request(Bundle mBundle) throws RemoteException {
Log.v(TAG,"call from Activity request ");
			mHandler.postDelayed(new Runnable(){
			
				@Override
				public void run() {
					synchronized (mCallbacksLock) 
					{
						int callbacksNum = mCallbacks.beginBroadcast();
				        for (int i=callbacksNum-1; i>=0; i--) 
				        {
				            try {
			   						mCallbacks.getBroadcastItem(i).onResponse(null);;
				            } catch (Exception e) {
				            	e.printStackTrace();
				            }
				        }
				        mCallbacks.finishBroadcast();
					}
				}
				
			}, 3000);
			return 0;
		}

		@Override
		public void registerCallback(ITestServiceCallback cb)
				throws RemoteException {
Log.v(TAG,"registerCallback :");
			if (cb != null)
			{
				mCallbacks.register(cb);
			}

		}

		@Override
		public void unregisterCallback(ITestServiceCallback cb)
				throws RemoteException {
Log.v(TAG,"unregisterCallback :");
				if (cb != null) 
				{
					mCallbacks.unregister(cb);
				}
		}

	};
	
	/**
	 * 经过测试onCallbackDied()方法，只有在bindService()，没有调用unbind()方法process就挂了的情况下才会执行
	 * @author Administrator
	 * @param <E>
	 */
	private class CusRemoteCallbackList<E extends IInterface> extends RemoteCallbackList<E>
	{
		@Override
		public void onCallbackDied(E callback) {
Log.v(TAG, "CusRemoteCallbackList onCallbackDied 1");
			super.onCallbackDied(callback);

		}

		@Override
		public void onCallbackDied(E callback, Object cookie) {
Log.v(TAG, "CusRemoteCallbackList onCallbackDied 2");
			
			super.onCallbackDied(callback, cookie);
		}
	}
 
}

4.配置AndroidManifest.xml文件

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.open.aidl"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="17" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.open.aidl.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <service
   		    android:label="TestService"
        	android:name="com.open.aidl.service.TestService"
        	android:process="com.open.aidl"
        	android:exported="true">
             <intent-filter>
                 <action android:name="com.open.aidl.service.TestService"/>
             </intent-filter>
        </service>
    </application>

</manifest>

 

5.测试运行.

 

点击bind service ,
在TestService中 打印了call from Activity，说明Activity 调用 Service 成功；
3秒后在Activity中 打印了call from service，说明Service 调用 Activity 成功。 

 

Demo代码地址：http://download.csdn.net/detail/zz7zz7zz/6010119

 

 

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