public class ActivityManagerApplication extends Application {

    private static Map<String,Activity> destoryMap = new HashMap<>();

    private ActivityManagerApplication() {
    }

    /**
     * 新增到銷燬佇列
     *
     * @param activity 要銷燬的activity
     */

    public static void addDestoryActivity
 
(Activity activity,String activityName) {
        destoryMap.put(activityName,activity);
    }
    /**
    *銷燬指定Activity
    */
    public static void destoryActivity(String activityName) {
       Set<String> keySet=destoryMap.keySet();
        for (String key:keySet){
            destoryMap.get(key).finish();
        }
    }
}
 

在A建立的時候，呼叫 add方法把當前的A新增進去。

當需要結束的時候，在B中呼叫 destoryActivity方法，指定新增A時的Key值來finish 掉A