3 Replies Latest reply on Sep 7, 2010 8:58 AM by Subeesh Arakkan

    Error #1009 in when Button is wrapped in BorderContainer

    RandomReado Level 1

      This is really bugging me, but I have a component where a Button is wrapped in BorderContainer. I'm passing a custom property to the component at run-time to change the label of the button but Flex is reporting the following error:

       

      Cannot access a property or method of a null object reference
      

       

      When the error occurs, Flex highlights the following code:

       

      myButton.label = value;
      

       

      Here's the app:

       

      // MyApp.mxml
      <?xml version="1.0" encoding="utf-8"?>
      <s:WindowedApplication xmlns:fx="http://ns.adobe.com/mxml/2009" 
                             xmlns:s="library://ns.adobe.com/flex/spark" 
                             xmlns:mx="library://ns.adobe.com/flex/mx"
                             xmlns:local="*">
          <local:MyComp id="myButton" label="My Button"/>
      </s:WindowedApplication>
      
      // MyComp.mxml
      <?xml version="1.0" encoding="utf-8"?>
      <s:BorderContainer 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="400" height="300">
          <fx:Script>
              <![CDATA[
                  private var _label:String;
      
                  public function get label():String
                  {
                      return _label;
                  }
      
                  public function set label(value:String):void
                  {
                      _label = value;
                      myButton.label = value;
                  }
              ]]>
          </fx:Script>
          <s:Button id="myButton" label="Test"/>
      </s:BorderContainer>
      

       

      I've tried compiling my code against Flex 4.5 too but I get the same error.

       

      Any help would be greatly appreciated. Thanks in advance.