Question

我注意到DataGrid中存在内存泄漏，如果我没有选择项目，我能够GC我的dataGrid，如果有任何选择，那么dataGrid导致内存泄漏... 这是最简单的例子：

<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" 
               xmlns:s="library://ns.adobe.com/flex/spark" 
               xmlns:mx="library://ns.adobe.com/flex/mx"
               minWidth="955" minHeight="600">
    <fx:Script>
        <![CDATA[
            import mx.collections.ArrayCollection;
            import mx.collections.ArrayList;

            import spark.components.gridClasses.GridColumn;

            [Bindable]
            private var columns:ArrayList = new ArrayList;

            [Bindable]
            private var dataProvider:ArrayCollection = new ArrayCollection;

            private function onCreationComplete():void
            {
                dataProvider.addItem({id:1});

                var column:GridColumn = new GridColumn;
                column.dataField = id;
                columns.addItem(column);

                container.selectedIndex = 0;
            }

            private function gotoOne():void
            {
                currentState = one;
            }

            private function gotoTwo():void
            {
                columns = null;

                currentState = two;
            }
        ]]>
    </fx:Script>

    <s:states>
        <s:State name="one"/>
        <s:State name="two"/>
    </s:states>

    <s:Button click="gotoOne()" label="one"/>
    <s:Button click="gotoTwo()" label="two" left="150"/>

    <s:DataGrid id="container" top="30" includeIn="one" itemDestructionPolicy="auto"
                creationComplete="onCreationComplete()" columns="{columns}"
                dataProvider="{dataProvider}"/>
</s:Application>

如果你注释掉行“container.selectedIndex = 0;” DataGrid很好地获得了GC。任何有关所选项目的GC DataGrid的想法？我使用的是flex 4.6.0

Answer 1

这不是内存泄漏，而是实时项目的循环。

在场景中完成渲染并显示datagrid时会调用

onCreationComplete，您必须在点击网格（selectedItem事件）时添加该项目。

DataGrid.selectedIndex内存泄漏

1 个答案: