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

S.N.	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, this will produce following result: [ Try it online ]

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