Apache flex Flex中的线性树

除非单击“父列表”，否则子列表或下一个列表必须处于禁用状态

我单击子1，则只有子2才能选择

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请帮助我。

听起来您可能想扩展树类并重写某些方法来实现您的特殊功能。看看重写drawItem、mouseClickHandler，可能还有expandItem函数

<mx:Script>
    <![CDATA[
        private function openAllNodes():void {
            tree.openItems = dp..node;
        }

        private function closeAllNodes():void {
            tree.openItems = [];
        }
    ]]>
</mx:Script>

<mx:XML id="dp">
    <root>
        <node label="Parent 1">
            <node label="Child 1" />
            <node label="Child 2">
                <node label="Grandchild 1" />
                <node label="Grandchild 2" />
            </node>
            <node label="Child 3" />
            <node label="Child 4" />
        </node>
    </root>
</mx:XML>

<mx:ApplicationControlBar dock="true">
    <mx:Button label="Open all nodes" click="openAllNodes();" />
    <mx:Button label="Close all nodes" click="closeAllNodes();" />
</mx:ApplicationControlBar>

<mx:Tree id="tree"
        dataProvider="{dp}"
        showRoot="false"
        labelField="@label"
        width="200" />