Flex - ToggleButtonBar 控制元件

簡介

ToggleButtonBar 控制元件提供了一個水平或垂直的按鈕組，這些按鈕保持其選中或未選中狀態。

類宣告

以下是 **mx.controls.ToggleButtonBar** 類的宣告：

public class ToggleButtonBar
   extends ButtonBar

公共屬性

公共方法

繼承的方法

此類繼承自以下類：

• mx.controls.ButtonBar
• mx.controls.NavBar
• mx.containers.Box
• mx.core.Container
• mx.core.UIComponent
• mx.core.FlexSprite
• flash.display.Sprite
• flash.display.DisplayObjectContainer
• flash.display.InteractiveObject
• flash.display.DisplayObject
• flash.events.EventDispatcher
• Object

Flex ToggleButtonBar 控制元件示例

讓我們按照以下步驟，透過建立一個測試應用程式來檢查 Flex 應用程式中 ToggleButtonBar 控制元件的使用：

以下是修改後的 mxml 檔案 src/com.tutorialspoint/HelloWorld.mxml 的內容。

<?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
   width = "100%" height = "100%" minWidth = "500" minHeight = "500">
   
   <fx:Style source = "/com/tutorialspoint/client/Style.css" />
   <fx:Script>
      <![CDATA[
         import mx.events.ItemClickEvent;
         private function sectionClickHandler(event:ItemClickEvent):void {
            sectionContents.text = "Contents for " + event.label;
         }
      ]]>
   </fx:Script>
   
   <fx:Declarations>
      <fx:Array id = "sectionList">
         <fx:String>Section 1</fx:String>
         <fx:String>Section 2</fx:String>
         <fx:String>Section 3</fx:String>
         <fx:String>Section 4</fx:String>
         <fx:String>Section 5</fx:String>
      </fx:Array>
   </fx:Declarations>   
   
   <s:BorderContainer width = "630" height = "480" id = "mainContainer" 
      styleName = "container">
      <s:VGroup width = "100%" height = "100%" gap = "50" 
         horizontalAlign = "center" verticalAlign = "middle">
         <s:Label id = "lblHeader" text = "Complex Controls Demonstration" 
            fontSize = "40" color = "0x777777" styleName = "heading" />
            
         <s:Panel id = "toggleButtonBarPanel" title = "Using ToggleButtonBar"
            width = "500" height = "300" >
            <s:layout>
               <s:VerticalLayout  gap = "10" verticalAlign = "middle"
                  horizontalAlign = "center" paddingTop = "10" />	
            </s:layout>
               
            <mx:ToggleButtonBar itemClick = "sectionClickHandler(event);" 
               dataProvider = "{sectionList}" />
            <s:BorderContainer width = "90%" height = "70%" 
               borderColor = "0x323232">
               <s:VGroup verticalAlign = "middle" 
                  horizontalAlign = "center" width = "100%" height = "100%">
                  <s:Label id = "sectionContents"
                     text = "Contents for Section 1" />	
               </s:VGroup>	
            </s:BorderContainer>							
         </s:Panel>				
      </s:VGroup>	 
   </s:BorderContainer>	
</s:Application>

完成所有更改後，讓我們像在 Flex - 建立應用程式 章節中一樣，以普通模式編譯並執行應用程式。如果應用程式一切正常，它將產生以下結果：[ 線上嘗試 ]