添加到集合时排序集合和排序保持原位? [英] Sort collection and sort remains in place when adding to collection?

问题描述

当我从服务层取回一个集合时，我创建一个 ArrayCollection 并应用排序.当我稍后将一个项目添加到集合中时，排序仍然存在吗?似乎是这样.我以为我只排序一次，而不是应用会粘住的排序???

When I get a collection back from the service tier, I create an ArrayCollection and apply a sort. When I add an item to the collection later on, the sort is still in place? It seems to be the case. I thought I was only sorting it once, not applying a sort that will stick???

这是添加项目的方法:

private function onAddNewClick():void
        {
            var fileTemplate:FileTemplateDetailDTO = new FileTemplateDetailDTO();   
            fileTemplate.fileTemplateId = 0;
            fileTemplate.fileTmpltDtlId = 0;
            fileTemplate.createdBy = appModel.userName;

            newFieldsDp.addItem( fileTemplate );

            this.fieldsGridEmpty.rowCount = newFieldsDp.length + 1;
            totalCount = newFieldsDp.length;
            this.fieldsGridEmpty.scrollToIndex( totalCount );
        }

当数据从服务返回时，这是我现在正在尝试的内容:

And here is what I'm trying now for when the data comes back from the service:

for each( var dto:FileTemplateCompositeDTO in coll ){
            dto.templateHistory = createHistoryColl( dto.details );
            var sortedArray:ArrayCollection = sortDetails( dto.details );
            sortedArray.sort = null;
            var freshArray:Array = sortedArray.toArray();
            dto.details.source = freshArray;
            model.fileTemplateComposites.addItem( FileTemplateCompositeDTO( dto ) );
        }

推荐答案

进行一次性排序的最简单方法:

Easiest way to do a one time sort:

var array:Array = yourArrayCollection.toArray():
array.sortOn("SomePropertyAvailableInEachItem", Array.DESCENDING | Array.NUMERIC);
yourArrayCollection.refresh();

因为您不是对底层数组进行排序，而不是对集合进行排序.

Since you're not sorting the underlying Array, and not the collection.

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