学步园

接下来的例子演示了Flex中如何利用defaultLeafIcon样式，去掉Tree叶子节点图标。

让我们先来看一下Demo（可以右键View Source或点击这里察看源代码）：

下面是完整代码(或点击这里察看)：

Download: main.mxml<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
        layout="vertical"
        verticalAlign="middle"
        backgroundColor="white">
 
    <mx:XML id="dp">
        <mlb>
            <league label="American League">
                <division label="East">
                    <team label="Boston" />
                    <team label="New York" />
                    <team label="Toronto" />
                    <team label="Baltimore" />
                    <team label="Tampa Bay" />
                </division>
                <division label="Central">
                    <team label="Cleveland" />
                    <team label="Detroit" />
                    <team label="Minnesota" />
                    <team label="Chicago" />
                    <team label="Kansas City" />
                </division>
                <division label="West">
                    <team label="Los Angeles" />
                    <team label="Seattle" />
                    <team label="Oakland" />
                    <team label="Texas" />
                </division>
            </league>
        </mlb>
    </mx:XML>
 
    <mx:Style>
        Tree {
            defaultLeafIcon: ClassReference(null);
        }
    </mx:Style>
 
    <mx:Tree id="tree"
            dataProvider="{dp.league}"
            labelField="@label"
            iconField="@icon"
            showRoot="true"
            width="320"
            rowCount="9" />
 
</mx:Application>

 本文转自:http://blog.minidx.com/2009/03/07/2249.html