Activity管理类，程序退出工具类

Activity管理类, 用于管理所有的Actvity, 提供添加Activity到堆栈，结束特定Activity,结束所有的Activity等方法，在项目开发中都有必备功能：退出功能，而退出功能在项目中一般有退出应用，退出登录两种情况，这里针对这个两种情况都有实现，在此做一下记录，以备以后查阅

1. package com.centrvideo.parkapp.util;
   import java.util.concurrent.CopyOnWriteArrayList;
   import android.app.Activity;
   import android.app.ActivityManager;
   import android.content.Context;
   import com.centrvideo.parkapp.activity.LoginActivity;
   /**
    * Activity管理类，用于管理Activity,程序退出
    * @ClassName: AppManager
    * @Description:
    * @author xiaoxiao
    * @date modify by 2015-8-17 下午1:33:27
    *
    */
   public class AppManager {
   
       private static CopyOnWriteArrayList<Activity> mActivityStack;
       private static AppManager mAppManager;
       private AppManager() {
       }
       /**
        * 单一实例
        */
       public static AppManager getInstance() {
           if (mAppManager == null) {
               mAppManager = new AppManager();
           }
           return mAppManager;
       }
       /**
        * 添加Activity到堆栈
        */
       public void addActivity(Activity activity) {
           if (mActivityStack == null) {
               mActivityStack = new CopyOnWriteArrayList<Activity>();
           }
           mActivityStack.add(activity);
       }
       /**
        * 结束指定的Activity
        */
       public void killActivity(Activity activity) {
           try {
               if (activity != null) {
                   mActivityStack.remove(activity);
                   activity.finish();
                   activity = null;
               }
           } catch (Exception e) {
               e.printStackTrace();
           }
       }
       /**
        * 结束指定类名的Activity
        */
       public void killActivity(Class<?> cls) {
           for (Activity activity : mActivityStack) {
               if (activity.getClass().equals(cls)) {
                   killActivity(activity);
               }
           }
       }
       /**
        * 结束所有Activity
        */
       public void killAllActivity() {
           for (int i = 0, size = mActivityStack.size(); i < size; i++) {
               if (null != mActivityStack.get(i)) {
                   mActivityStack.get(i).finish();
               }
           }
           mActivityStack.clear();
       }
       /**
        * 结束所有Activity除了Login
        */
       public void killAllActivityNoLogin() {
           for (int i = 0, size = mActivityStack.size(); i < size; i++) {
               if (null != mActivityStack.get(i)) {
                   if (mActivityStack.get(i).getClass()!=LoginActivity.class) {
                       mActivityStack.get(i).finish();
                   }
               }
           }
           mActivityStack.clear();
       }
       /**
        * 退出应用程序
        */
       @SuppressWarnings("deprecation")
       public void AppExit(Context context) {
           try {
               killAllActivity();
               ActivityManager activityMgr = (ActivityManager) context
                       .getSystemService(Context.ACTIVITY_SERVICE);
               activityMgr.restartPackage(context.getPackageName());
               System.exit(0);
           } catch (Exception e) {
               e.printStackTrace();
           }
       }
   }

   


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