增加集合时分类收集和分类仍然存在？ [英] Sort collection and sort remains in place when adding to collection?

问题描述

当我得到一个集合从服务层后面，我创建了一个ArrayCollection和应用排序。当我后来在一个项目添加到集合，排序还是很到位的？它似乎是这种情况。我以为我只是整理了一次，而不是施加那种会坚持???

下面是方法添加一个项目：

 私有函数onAddNewClick（）：无效
        {
            VAR fileTemplate：FileTemplateDetailDTO =新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）;
        }
 

和这里是我现在正在尝试当数据回来的服务：

 每个（VAR DTO：FileTemplateCompositeDTO在科尔）{
            dto.templateHistory = createHistoryColl（dto.details）;
            VAR sortedArray：ArrayCollection的= sortDetails（dto.details）;
            sortedArray.sort = NULL;
            VAR freshArray：阵列= sortedArray.toArray（）;
            dto.details.source = freshArray;
            model.fileTemplateComposites.addItem（FileTemplateCompositeDTO（DTO））;
        }
 

解决方案

最简单的方式做了一次排序：

  VAR数组：数组= yourArrayCollection.toArray（）：
array.sortOn（SomePropertyAvailableInEachItem，Array.DESCENDING | Array.NUMERIC来）;
yourArrayCollection.refresh（）;
 

既然你不排序的基础Array，而不是收藏。

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???

Here is the method for adding an item:

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 );
        }

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 ) );
        }

解决方案

Easiest way to do a one time sort:

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

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

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