本文将带你了解Android应用开发之Android Activity栈管理  制定关闭某一个Activity,关闭所有Activit，希望本文对大家学Android有所帮助。

系统Api :打开新的Activity 关闭之前所有Activity。
Intent intent = new Intent(this,   LoginActivity.class);intent.setFlags(Intent.<em>FLAG_ACTIVITY_CLEAR_TASK   </em>|   Intent.<em>FLAG_ACTIVITY_NEW_TASK</em>);startActivity(intent);
自己管理: 将Activity放入集合进行管理
/**   * Activity管理类   * */public   class AppManager {    private static Stack activityStack;      private static AppManager instance;      private AppManager() {  }    /**      * 单一实例      */ public static AppManager getAppManager() {   if   (instance == null) { instance = new AppManager();   }     return instance;  }    /**      * 添加Activity到堆栈    */ public   void addActivity(Activity activity) {   if (activityStack == null)   { activityStack = new Stack();   }     activityStack.add(activity);  }    /**      * 获取当前Activity（堆栈中最后一个压入的）      */ public Activity currentActivity() {   Activity   activity = activityStack.lastElement();   return activity;  }      /**    * 结束当前Activity（堆栈中最后一个压入的）    */ public void finishActivity() {     Activity activity = activityStack.lastElement();     finishActivity(activity);  }    /**      * 结束指定的Activity      */ public void finishActivity(Activity activity) {     if (activity != null) { activityStack.remove(activity);   activity.finish(); activity = null;   }  }      /**    * 结束指定类名的Activity    */ public void   finishActivity(Class<!--?--> cls) {   for (Activity activity   : activityStack) { if (activity.getClass().equals(cls)) {    finishActivity(activity); }   }  }    /**      * 结束所有Activity      */ public void finishAllActivity() {   for (int i   = 0, size = activityStack.size(); i < size; i++) { if (null !=   activityStack.get(i)) {  activityStack.get(i).finish(); }   }     activityStack.clear();  }    /**      * 退出应用程序      */ @SuppressWarnings("deprecation")  public   void AppExit(Context context) {   try { finishAllActivity();   ActivityManager activityManager = (ActivityManager)   context.getSystemService(Context.ACTIVITY_SERVICE);   activityManager.restartPackage(context.getPackageName()); System.exit(0);     } catch (Exception e) { e.printStackTrace();   }    } } </activity></activity>    

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