Question

我有选择从XML文件中获取值的框。程序加载时，它会自动显示XML文件中第一个值的信息。我还需要它在选择框中突出显示该值。

这是它最初加载时的样子 enter image description here

由于它是自动加载这些图像，我希望在选择框中选择该类型（＆＃34;按颜色＆＃34; - ＆gt;＆＃34; Barnwood＆＃34;） enter image description here

（我继承的代码有很多文件，所以我只会显示我认为相关的代码。我对Flex的知识非常有限......）

            private function onCatReceived(e:ResultEvent):void
            {
                var cats:Array= new Array();
                loadItems(Globals.compRoot+catDataProvider.lastResult.elements("category")[0].catid);
                for each(var cat:XML in catDataProvider.lastResult.elements("category"))
                {
                    if (cats[cat.parent.toString()])
                    {
                        cats[cat.parent.toString()].addItem(cat);
                    }
                    else
                    {
                        cats[cat.parent.toString()]= new ArrayCollection();
                        cats[cat.parent.toString()].addItem(cat);
                    }

                }
                for (var ct:String in cats)
                {
                    var cnv:Canvas= new Canvas();
                    var dataSort:SortField= new SortField("name",true);
                    var nameSort:Sort= new Sort();
                    nameSort.fields=[dataSort];
                    var source:ArrayCollection=cats[ct];
                    source.sort=nameSort;
                    source.refresh();
                    cnv.label=ct;
                    cnv.horizontalScrollPolicy="off";
                    cnv.verticalScrollPolicy="off";
                    var lst:List= new List();
                    lst.width=166;
                    lst.height=115;
                    lst.labelField="name";
                    lst.styleName="ControllerList";
                    lst.addEventListener(ListEvent.CHANGE,changeCat);

                    lst.dataProvider=cats[ct];
                    Alert.show("ct: " + ct);
                    cnv.addChild(lst);
                    acc.addChild(cnv);
                }
                //Maybe add it here??
                //mouldingList.items.selectedIndex = 0;
                var cnv:Canvas = acc.getChildAt(0) as Canvas;
                var lst:List = cnv.getChildAt(1) as List;
                Alert.show(lst.toString());
                Alert.show(lst.selectedItem.toString());

            }

Answer 1

我改变了Accordion添加孩子的方式，以便我可以控制每个孩子的索引

我浏览了Accordion中的每个Canvas，如果它与“By Color”匹配，则设置List的Accordion的selectedIndex。

private function onCatReceived(e:ResultEvent):void
{
    var cats:Array= new Array();
    loadItems(Globals.compRoot+catDataProvider.lastResult.elements("category")[0].catid);
    for each(var cat:XML in catDataProvider.lastResult.elements("category"))
    {
        if (cats[cat.parent.toString()])
        {
            cats[cat.parent.toString()].addItem(cat);
        }
        else
        {
            cats[cat.parent.toString()]= new ArrayCollection();
            cats[cat.parent.toString()].addItem(cat);
        }

    }
    for (var ct:String in cats)
    {
        var cnv:Canvas= new Canvas();
        var dataSort:SortField= new SortField("name",true);
        var nameSort:Sort= new Sort();
        nameSort.fields=[dataSort];
        var source:ArrayCollection=cats[ct];
        source.sort=nameSort;
        source.refresh();
        cnv.label=ct;

        cnv.horizontalScrollPolicy="off";
        cnv.verticalScrollPolicy="off";
        var lst:List= new List();
        lst.width=166;
        lst.height=115;
        lst.labelField="name";
        lst.styleName="ControllerList";
        lst.addEventListener(ListEvent.CHANGE,changeCat);

        lst.dataProvider=cats[ct];
        //Alert.show("ct: " + ct);
        cnv.addChild(lst);
        acc.addChild(cnv);

        switch (ct)
        {
            case "By Color":
                acc.addChildAt(cnv, 0);
                break;

            case "By Material":
                acc.addChildAt(cnv, 1);
                break;

            case "By Style":
                acc.addChildAt(cnv, 2);
                break;

            default:
                acc.addChild(cnv);

        }


        //acc.addChildAt(cnv, 0);
    }



    //Set the selected item to be the 0th item

    for each (var o:Object in acc.getChildren())
    {
        if (o is Canvas)
        {
            var c:Canvas = o as Canvas;
            if ("By Color" == c.label)
            {

                c.setFocus(); //does this work?
                c.drawFocus(true); //does this work?
                acc.selectedIndex = 0; //does this work?
                for each (var o2:Object in o.getChildren())
                {
                    if (o2 is List)
                    {
                        var l:List = o2 as List;



                        l.selectedIndex = 0;
                    }
                }
            }
        }
    }

如何根据xml中的值自动突出显示选择框？

1 个答案: