利用信鸽推送实现登录后强制退出的功能

首先整理思路，先思考实现逻辑：

1.集成信鸽推送

2.实现自定义推送

3.在自定义推送中，接收推送的方法内启动强制退出功能。

思路逻辑很简单，但是实现起来就得一步一步做，先集成信鸽：

这里主要是参考官方开发文档即可

然后是实现自定义推送接受方，即自定义receiver

CustomReceiver.java

/**


*


*/


package com.dhcc.gpscarmanager_phone.CustomReceivers;




import u.upd.l;


import android.content.Context;


import android.content.Intent;




import com.dhcc.gpscarmanager_phone.CustomServices.ForceOfflineService;


import com.dhcc.gpscarmanager_phone.Util.L;


import com.tencent.android.tpush.XGPushBaseReceiver;


import com.tencent.android.tpush.XGPushClickedResult;


import com.tencent.android.tpush.XGPushRegisterResult;


import com.tencent.android.tpush.XGPushShowedResult;


import com.tencent.android.tpush.XGPushTextMessage;


/**


*GpsCarManager_Phone com.dhcc.gpscarmanager_phone.CustomReceivers


*CustomReceiver.java


*


*@author:贾真


*@date: 2015-8-21 上午9:26:30


*/




public class CustomReceiver extends XGPushBaseReceiver {




/*


*(non-Javadoc)


*


*@see


*com.tencent.android.tpush.XGPushBaseReceiver#onDeleteTagResult(android


*.content.Context, int, java.lang.String)


*/
@Override


public void onDeleteTagResult(Context context, int arg1, String arg2) {


// TODO Auto-generated method stub




}




/*


*(non-Javadoc)


*


*@see


*com.tencent.android.tpush.XGPushBaseReceiver#onNotifactionClickedResult


*(android.content.Context, com.tencent.android.tpush.XGPushClickedResult)


*/
@Override


public void onNotifactionClickedResult(Context context,


XGPushClickedResult arg1) {


// TODO Auto-generated method stub




}




/*


*(non-Javadoc)


*


*@see


*com.tencent.android.tpush.XGPushBaseReceiver#onNotifactionShowedResult


*(android.content.Context, com.tencent.android.tpush.XGPushShowedResult)


*/
@Override


public void onNotifactionShowedResult(Context context,


XGPushShowedResult result) {


// TODO Auto-generated method stub




// 这里是测试代码，在接受到“下线”这两个字后，接收通知的应用强行下线
if ("下线".equals(result.getContent())) {


L.e(result.getContent());


context.getApplicationContext().startService(new Intent(context.getApplicationContext(), ForceOfflineService.class));




}


}




/*


*(non-Javadoc)


*


*@see


*com.tencent.android.tpush.XGPushBaseReceiver#onRegisterResult(android


*.content.Context, int, com.tencent.android.tpush.XGPushRegisterResult)


*/
@Override


public void onRegisterResult(Context context, int arg1,


XGPushRegisterResult arg2) {


// TODO Auto-generated method stub




}




/*


*(non-Javadoc)


*


*@see


*com.tencent.android.tpush.XGPushBaseReceiver#onSetTagResult(android.content


*.Context, int, java.lang.String)


*/
@Override


public void onSetTagResult(Context context, int arg1, String arg2) {


// TODO Auto-generated method stub




}




/*


*(non-Javadoc)


*


*@see


*com.tencent.android.tpush.XGPushBaseReceiver#onTextMessage(android.content


*.Context, com.tencent.android.tpush.XGPushTextMessage)


*/
@Override


public void onTextMessage(Context context, XGPushTextMessage message) {


// TODO Auto-generated method stub




}




/*


*(non-Javadoc)


*


*@see


*com.tencent.android.tpush.XGPushBaseReceiver#onUnregisterResult(android


*.content.Context, int)


*/
@Override


public void onUnregisterResult(Context context, int arg1) {


// TODO Auto-generated method stub




}




}

在注册文件中加入该Revceiver的静态注册代码：

<receiver android:name="com.dhcc.gpscarmanager_phone.CustomReceivers.CustomReceiver" >


<intent-filter>




<!-- 接收消息透传 -->


<action android:name="com.tencent.android.tpush.action.PUSH_MESSAGE" />


<!-- 监听注册、反注册、设置/删除标签、通知被点击等处理结果 -->


<action android:name="com.tencent.android.tpush.action.FEEDBACK" />


</intent-filter>


</receiver>

然后注意这句代码：

if ("下线".equals(result.getContent())) {


L.e(result.getContent());


context.getApplicationContext().startService(new Intent(context.getApplicationContext(), ForceOfflineService.class));


}

由于目前是测试代码，所以我判断的是如果服务端发送的是“下线”的话，我就将该设备强制下线，在实际开发的过程中，其流程应当是

用户登录-> 判断当前的Token与数据库中存储的Token是否一致-> 如果不一致，则对数据库中的Token的用户发送约定好的下线通知，可以是参数也可以是字符串-> 手机端接到下线通知后，强制下线-> 服务端将新的Token保存到数据库中去，老的Token销毁

然后可以注意到，这里是启动了一个Service,然后利用Service进行下线操作的：

/**


*


*/


package com.dhcc.gpscarmanager_phone.CustomServices;




import com.dhcc.gpscarmanager_phone.CustomReceivers.ForceOfflineReceiver;


import com.dhcc.gpscarmanager_phone.Util.L;




import u.upd.l;


import android.app.Service;


import android.content.Intent;


import android.content.IntentFilter;


import android.os.IBinder;


import android.util.Log;


/**


*GpsCarManager_Phone com.dhcc.gpscarmanager_phone.CustomServices


*ForceOfflineService.java


*


*@author:贾真


*@date: 2015-8-21 上午10:03:59


*/


public class ForceOfflineService extends Service {




private static final String TAG = "ForceOfflineService";


ForceOfflineReceiver forceOfflineReceiver;
@Override


public void onCreate() {


Log.i(TAG, "ExampleService-onCreate");


super.onCreate();




 IntentFilter intentFilter=new IntentFilter();


 intentFilter.addAction("com.dhcc.AppOffline");


forceOfflineReceiver=new ForceOfflineReceiver();


 registerReceiver(forceOfflineReceiver, intentFilter);


 


 Intent intent =new Intent("com.dhcc.AppOffline");


 getApplicationContext().sendBroadcast(intent);


}


@Override


public void onStart(Intent intent, int startId) {


 Log.i(TAG, "ExampleService-onStart");


 super.onStart(intent, startId);


}


@Override


public int onStartCommand(Intent intent, int flags, int startId) {


 //执行文件的下载或者播放等操作


 Log.i(TAG, "ExampleService-onStartCommand");


 /*


 *这里返回状态有三个值，分别是:


 *1、START_STICKY：当服务进程在运行时被杀死，系统将会把它置为started状态，但是不保存其传递的Intent对象，之后，系统会尝试重新创建服务;


 *2、START_NOT_STICKY：当服务进程在运行时被杀死，并且没有新的Intent对象传递过来的话，系统将会把它置为started状态，


*但是系统不会重新创建服务，直到startService(Intent intent)方法再次被调用;


 *3、START_REDELIVER_INTENT：当服务进程在运行时被杀死，它将会在隔一段时间后自动创建，并且最后一个传递的Intent对象将会再次传递过来。


*/


 return super.onStartCommand(intent, flags, startId);


}


@Override


public IBinder onBind(Intent intent) {


 Log.i(TAG, "ExampleService-onBind");


 return null;


}


@Override


public void onDestroy() {


 Log.i(TAG, "ExampleService-onDestroy");


 super.onDestroy();


 unregisterReceiver(forceOfflineReceiver);


}




}

别忘了在配置文件中加入Service的注册：

<!-- 强制下线服务 -->


<service android:name="com.dhcc.gpscarmanager_phone.CustomServices.ForceOfflineService"/

在OnCreate方法中加入了启动强制下线的Receiver的代码：

IntentFilter intentFilter = new IntentFilter();


intentFilter.addAction("com.dhcc.AppOffline");


forceOfflineReceiver = new ForceOfflineReceiver();


registerReceiver(forceOfflineReceiver, intentFilter);




Intent intent = new Intent("com.dhcc.AppOffline");


getApplicationContext().sendBroadcast(intent);

这里要注意的是，不能直接用Context进行启动下线Receiver的操作，否则会报错：

IntentReceiver components are not allowed to register to receive intents

必须利用getApplicationContext的方式动态注册ForceOfflineRecevier()，不能用静态注册的方式，否则也会报上边同样的错误(但是这里不知道为什么)

具体解决原因参照： http://blog.csdn.net/eimsteim/article/details/7220920
然后启动这个ForceOfflineReceiver,他的内容是这样的：

/**


*


*/


package com.dhcc.gpscarmanager_phone.CustomReceivers;




import com.baidu.navisdk.util.common.Stopwatch;


import com.dhcc.gpscarmanager_phone.CustomServices.ForceOfflineService;


import com.dhcc.gpscarmanager_phone.CustomView.ActivityCollector;


import com.dhcc.gpscarmanager_phone.Module.Welcome.WelcomPage.LoginActivity;




import android.app.AlertDialog;


import android.content.BroadcastReceiver;


import android.content.Context;


import android.content.DialogInterface;


import android.content.DialogInterface.OnClickListener;


import android.content.Intent;


import android.view.WindowManager;


/**


*GpsCarManager_Phone com.dhcc.gpscarmanager_phone.CustomReceivers


*ForceOfflineReceiver.java


*


*@author:贾真


*@date: 2015-8-21 上午9:45:38


*/


public class ForceOfflineReceiver extends BroadcastReceiver {




/*


*(non-Javadoc)


*


*@see android.content.BroadcastReceiver#onReceive(android.content.Context,


*android.content.Intent)


*/
@Override


public void onReceive(final Context context, Intent intent) {


// TODO Auto-generated method stub


intent = new Intent(context, ForceOfflineService.class);


context.stopService(intent);


AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(context);


dialogBuilder.setTitle("已下线");


dialogBuilder.setMessage("您的账户已在另一个设备登录,请尝试重新登陆");


dialogBuilder.setCancelable(false);


dialogBuilder.setPositiveButton("登 录", new OnClickListener() {


@Override


public void onClick(DialogInterface arg0, int arg1) {


// TODO Auto-generated method stub


ActivityCollector.finishAll();


Intent intent = new Intent(context, LoginActivity.class);


intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);


context.startActivity(intent);


}


});




AlertDialog alertDialog = dialogBuilder.create();


alertDialog.getWindow().setType(


WindowManager.LayoutParams.TYPE_SYSTEM_ALERT);


alertDialog.show();


}




}

启动一个窗口，告诉用户你的账户在其他设备登录了，然后强制启动登录界面，并把之前启动的Activity都关闭掉，所以这里的关键类就是

ActivityCollector了：

/**


*


*/


package com.dhcc.gpscarmanager_phone.CustomView;




import java.util.ArrayList;


import java.util.List;




import android.app.Activity;


/**


*GpsCarManager_Phone


*com.dhcc.gpscarmanager_phone.CustomView


*ActivityCollector.java


*@author:贾真


*@date: 2015-8-21上午9:09:48


*/


public class ActivityCollector {




public static List<Activity> activities=new ArrayList<Activity>();




public static void addActivity(Activity activity){




activities.add(activity);




}




public static void removeActivity(Activity activity){




activities.remove(activity);




}




public static void finishAll(){




for(Activity activity:activities){




if(activity.isFinishing()){




activity.finish();


}


}




}




}

功能自己看，然后就是在你的基类BaseActivity里加入对应的代码：

@Override


public void onCreate(Bundle savedInstanceState) {




super.onCreate(savedInstanceState);


ActivityCollector.addActivity(this);


}




protected void onDestroy(){




super.onDestroy();


ActivityCollector.removeActivity(this);




}

这样就把新启动的Activity管理起来了，然后在关闭的时候利用循环关闭对应的Activity即可了。

由于使用的是系统的弹出窗口，所以要在配置文件中加入这么一句权限：

<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />

来自为知笔记(Wiz)