從父級刪除子類對象？

Question

我有一個靜態ArrayList ，其中包含VisibleObject類型的所有對象。 所有VisibleObjects也是BaseClass的子類，可以作為許多類的父類。

我的問題是，正在調用VisibleObject remove調用，但是由於某種原因，隨着大小的增加，它實際上並未從ArrayList中移除。

現在VisibleObject新時添加VisibleObject創建。

這是問題代碼。

//Remove base class and visible object.
    List<BaseClass> baseClassList = this.mBaseClassExtras;
    Iterator<BaseClass> baseClassIterator = baseClassList.iterator();
    while(baseClassIterator.hasNext())
    {
        BaseClass baseClass = baseClassIterator.next(); // must be called before you can call i.remove()
        baseClass.update(delta);

        if(baseClass.getIsCompleted())
        {
            if(baseClass instanceof VisibleObject)
            {
                if(VisibleObject.AllVisibleObjects.remove(baseClass))
                {
                    Functions.out("VisibleObject removed.");
                }
                else
                {
                    Functions.out("Failed to remove VisibleObject - Possible memory problems.");
                }
            }

            //Remove the base class.
            baseClassIterator.remove();
        }
    }

    //BaseClass
    if(mBaseClassExtras.size() > 0)
    {
        Functions.out(
                "Is called, VisibleObjects array:" + VisibleObject.AllVisibleObjects.size() +
                " | BaseClass size: " + mBaseClassExtras.size()
        );
    }

這是系統（部分）的輸出

06-15 06:49:36.793    9301-9301/com.youllneverknowmycompany.topsecretapp I/System.out﹕ OLLY_SYSTEM: VisibleObject     removed.
06-15 06:49:36.793    9301-9301/com.youllneverknowmycompany.topsecretapp I/System.out﹕ OLLY_SYSTEM: Is called, VisibleObjects array:105 | BaseClass size: 11
06-15 06:49:36.825    9301-9301/com.youllneverknowmycompany.topsecretapp I/System.out﹕ OLLY_SYSTEM: Is called, VisibleObjects array:105 | BaseClass size: 12
06-15 06:49:36.857    9301-9301/com.youllneverknowmycompany.topsecretapp I/System.out﹕ OLLY_SYSTEM: VisibleObject removed.
06-15 06:49:36.857    9301-9301/com.youllneverknowmycompany.topsecretapp I/System.out﹕ OLLY_SYSTEM: Is called, VisibleObjects array:104 | BaseClass size: 11
06-15 06:49:36.893    9301-9301/com.youllneverknowmycompany.topsecretapp I/System.out﹕ OLLY_SYSTEM: Is called, VisibleObjects array:105 | BaseClass size: 11
06-15 06:49:36.925    9301-9301/com.youllneverknowmycompany.topsecretapp I/System.out﹕ OLLY_SYSTEM: Is called, VisibleObjects array:105 | BaseClass size: 12
06-15 06:49:36.977    9301-9301/com.youllneverknowmycompany.topsecretapp I/System.out﹕ OLLY_SYSTEM: VisibleObject removed.

Answer 1

我通過鏈式鏈接兩個類中同名的方法來解決此問題。 調用該方法時，它從存儲它的類中刪除了ArrayList項（靜態）。

然后轉到父類，並執行刪除自身的標准方法。 完美的作品！