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Multiple sets of visual children have been specified for the component tag

May 31st, 2010 | Category: Design View

Multiple sets of visual children have been specified for the component tag.

You have contents in the default property of a container but also defined in the custom component. Remove the contents of the component instance and if need be move it into the component mxml file.

PLAIN TEXT
XML:
  1. <!-- Incorrect - notice the rectangle inside the component instance -->
  2. <local:CustomComponent  x="135" y="9" width="457" height="340">
  3.     <s:Rect width="100%" height="100%">
  4.         <s:fill>
  5.             <s:SolidColor color="#dddddd"/>
  6.         </s:fill>
  7.     </s:Rect>
  8. </local:CustomComponent>
  9.  
  10. <!-- Correct - rectangle is defined in the component -->
  11. <local:CustomComponent  x="135" y="9" width="457" height="340" />

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The default property contents must be contiguous

February 14th, 2010 | Category: Design View, General

The default property contents must be contiguous

When in Design View in Flex 4 you must keep the visual design MXML code together. Having a Script block right in the middle of it will create this error.

Incorrect:

PLAIN TEXT
XML:
  1. <?xml version="1.0" encoding="utf-8"?>
  2. <s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
  3.                xmlns:s="library://ns.adobe.com/flex/spark"
  4.                xmlns:mx="library://ns.adobe.com/flex/mx">
  5.  
  6.     <!-- Visual markup code -->
  7.     <s:TextInput x="26" y="134" id="code1" width="302" text="Status of Mic"/>
  8.  
  9.     <!-- Script tag interrupts and is located in the middle of visual markup code -->
  10.     <fx:Script>
  11.         <![CDATA[
  12.         private var swfpgno:int = 1;
  13.         ]]>
  14.     </fx:Script>
  15.  
  16.     <!-- Visual markup code -->
  17.     <s:TextInput x="26" y="77" id="mic1" width="302"/>
  18. </s:Application>

Correct:

PLAIN TEXT
XML:
  1. <?xml version="1.0" encoding="utf-8"?>
  2. <s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
  3.                xmlns:s="library://ns.adobe.com/flex/spark"
  4.                xmlns:mx="library://ns.adobe.com/flex/mx">
  5.  
  6.     <!-- Script tag does not interrupt flow of design view code -->
  7.     <fx:Script>
  8.         <![CDATA[
  9.         private var swfpgno:int = 1;
  10.         ]]>
  11.     </fx:Script>
  12.  
  13.     <!-- Design View visual markup is in a continuous block -->
  14.     <s:TextInput x="26" y="134" id="code1" width="302" text="Status of Mic"/>
  15.     <s:TextInput x="26" y="77" id="mic1" width="302"/>
  16.  
  17. </s:Application>

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