Flex - TabBar

Introduction

The TabBar class represents a set of identical tabs.

Class Declaration

Following is the declaration for spark.components.TabBar class −

public class TabBar
   extends ButtonBarBase
      implements IFocusManagerComponent

Public Methods

Sr.No	Method & Description
1	TabBar() Constructor.

Methods Inherited

This class inherits methods from the following classes −

spark.components.supportClasses.ButtonBarBase
spark.components.ListBase
spark.components.SkinnableDataContainer
spark.components.supportClasses.SkinnableContainerBase
spark.components.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 TabBar Example

Let us follow the following steps to check usage of TabBar in a Flex application by creating a test application −

Step	Description
1	Create a project with a name HelloWorld under a package com.tutorialspoint.client as explained in the Flex - Create Application chapter.
2	Modify HelloWorld.mxml as explained below. Keep rest of the files unchanged.
3	Compile and run the application to make sure business logic is working as per the requirements.

Following is the content of the modified mxml file src/com.tutorialspoint/HelloWorld.mxml.

<?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" />
   <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 = "Layout Panels Demonstration" 
            fontSize = "40" color = "0x777777" styleName = "heading" />
         
         <s:Panel id = "tabBarPanel" title = "Using TabBar" 
            width = "500" height = "300" >
            <s:layout>
               <s:VerticalLayout gap = "0" />	
            </s:layout>
            
            <s:TabBar id = "tabs" dataProvider = "{viewStack}" left = "5" top = "5" />
            <mx:ViewStack id = "viewStack" width = "95%" height = "85%" left = "5">
               <s:NavigatorContent label = "Tab #1"  width = "100%" height = "100%">
                  <s:BorderContainer width = "100%" height = "100%" >
                     <s:Label text = "Content area for Tab #1" 
                        verticalCenter = "0" horizontalCenter = "0" />
                  </s:BorderContainer>
               </s:NavigatorContent>
               
               <s:NavigatorContent label = "Tab #2"  width = "100%" height = "100%">
                  <s:BorderContainer width = "100%" height = "100%">
                     <s:Label text = "Content area for Tab #2" 
                        verticalCenter = "0" horizontalCenter = "0" />
                  </s:BorderContainer>
               </s:NavigatorContent>
            </mx:ViewStack>						
         </s:Panel>
      </s:VGroup>	 
   </s:BorderContainer>	
</s:Application>

Once you are ready with all the changes done, let us compile and run the application in normal mode as we did in Flex - Create Application chapter. If everything is fine with your application, it will produce the following result: [ Try it online ]

flex_layout_panels.htm