Flex - 切换按钮控件

简介

ToggleButton 组件定义了一个切换按钮。单击按钮会在向上和向下状态之间切换按钮。当您在按钮处于向上状态时单击它时，它会切换到向下状态，依此类推。

类声明

以下是spark.components.ToggleButton类的声明：

public class ToggleButton 
   extends ToggleButtonBase

公共方法

继承的方法

此类继承自以下类的方法：

• spark.components.supportClasses.ToggleButtonBase
• spark.components.supportClasses.ButtonBase
• spark.component.supportClasses.SkinnableComponent
• mx.core.UIComponent
• mx.core.FlexSprite
• flash.display.Sprite
• flash.display.DisplayObjectContainer
• flash.display.InteractiveObject
• flash.display.DisplayObject
• flash.events.EventDispatcher
• Object

Flex 切换按钮控件示例

让我们按照以下步骤在 Flex 应用程序中检查 ToggleButton 控件的使用，方法是创建一个测试应用程序：

以下是修改后的 mxml 文件src/com.tutorialspoint/HelloWorld.mxml的内容。

<?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.controls.Alert;
         import mx.events.FlexEvent;

         protected function button_clickHandler(event:MouseEvent):void {
            Alert.show("Hello World!");				
         }
      ]]>
   </fx:Script>
   
   <s:BorderContainer width = "550" height = "400" id = "mainContainer" 
      styleName = "container">
      <s:VGroup width = "100%" height = "100%" gap = "50" 
         horizontalAlign = "center" verticalAlign = "middle">
         <s:Label id = "lblHeader" text = "Form Controls Demonstration" 
            fontSize = "40" color = "0x777777" styleName = "heading" />
         
         <s:Panel id = "toggleButtonPanel" title = "Using ToggleButton" 
            width = "420" height = "200">		
            <s:layout>
               <s:HorizontalLayout  gap = "10" verticalAlign = "middle" 
                  horizontalAlign = "center" />	
            </s:layout>
            
            <s:ToggleButton id = "clickMeToggleButton" label = "Click Me" 
               click = "button_clickHandler(event)" />
            <s:ToggleButton id = "disabledToggleButton" label = "Disabled Button" 
               enabled = "false" />					
         </s:Panel>			
      </s:VGroup>	 
   </s:BorderContainer>	
</s:Application>

完成所有更改后，让我们像在Flex - 创建应用程序章节中所做的那样，在普通模式下编译并运行应用程序。如果您的应用程序一切正常，它将产生以下结果：[ 在线尝试 ]