Flex 4 mx:Component could not resolve

Hi, I am using flash builder 4 to run sample application from "Getting Started with FLEX 3", but the code can't run because there is one place that FB4 can't resolve, I guess this is because the library has been obsolete but after a tons of search I can't find the solution.
Thanks. Bin

<fx:Component
Alex Harui
Flex SDK Developer
Adobe Systems Inc.
Blog: http://blogs.adobe.com/aharui

Similar Messages

Flex in a week: error Could not resolve s:Application to a component implementation

Hi All, I've seen other posts mentioning this error but seems no fix has come up.
Was just trying out the example project for Flex in a Week and out of the box am stuck on
" Could not resolve <s:Application> to a component implementation "
the namespace and all expected attributes are in the s:Application tag.
Is there a common fix for using these samples?
thanks everyone for your consideration.

Thanks, I am using Flex Builder 3.

Could not resolve fx:Script (or fx: Declarations to a component implementation

Hi,
I am trying to compile a file into swf using mxmlc in command line. When it is a very simple mxml, compile is successful. But when the file contaion the fx name space, I get a compile error like: could not resolve COMPONENT_NAME to a component implementation.
I have to be able to do this, without the help of Flash Builder because I am working on a project where I will need to generate swf files from mxml files which we generate the code of.
I tried it with SDK version 4.0.0., version 4.1.0 build 16076 and 4.5.0. build 20967. And I also tried it in 3 different computers. Note: Our notebooks has Windows 7 OS - locale:Turkish.
I read that this error is specific to some locales like Turkish here: http://forums.adobe.com/message/892431#892431, . But I couldnt find the solution.
Any suggestions?
The simple code I am trying to compile is(which is generated by Flash Builder 4 and can be compiled there):
<?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" minWidth="955" minHeight="600">
     <fx:Declarations>
          
     </fx:Declarations>
</s:Application>

Could you please file a bug at http://bugs.adobe.com/jira with sample code that fails to compile on a Turkish system, so that we can track this problem and fix it in a future release?
Gordon Smith
Adobe Flex SDK Team

AIR SDK 3.6 Could not resolve component

I have Flash Builder 4.6 and the AIR SDK version is 3.5, Today i update the AIR SDK version to 3.6, However when i debug the appliction, the Flash Builder popup a error for "Could not resolve <s:ViewNavigatorApplication> to a component implementation." .
I have downloaded AIR SDK3.6 from here: http://www.adobe.com/devnet/air/air-sdk-download.html

Hi Jack,
Please download AIR SDK from a small note below on http://www.adobe.com/devnet/air/air-sdk-download.html
for flex users.
Note : Flex users will need to download the original AIR SDK without the new compiler.
Please let us know if this fixes your issue.
Thanks,
Krati

Error: Could not resolve s:SolidColor to a component implementation

So I have a library project and in that project I have a CustomDataGridBackgroundSkin file which is as follows:
<?xml version="1.0" encoding="utf-8"?>
<s:SparkSkin xmlns:fx="http://ns.adobe.com/mxml/2009"
             xmlns:s="library://ns.adobe.com/flex/spark"
             xmlns:mx="library://ns.adobe.com/flex/mx"
             minWidth="25" minHeight="25">
    <fx:Declarations>
        
    </fx:Declarations>
    
    <s:Rect left="0" right="0" top="0" height="100%" >
        <s:fill>
            <spark:SolidColor color="0x968f89" alpha="1" />
        </s:fill>
    </s:Rect>
</s:SparkSkin>
I am simply trying to get an ant task to compile this library to SWC, but I am getting a " Error: Could not resolve <s:SolidColor> to a component implementation" error during compile. The only way to fix it is to add these lines of code (bold).
<?xml version="1.0" encoding="utf-8"?>
<s:SparkSkin 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:spark="mx.graphics.*"
             minWidth="25" minHeight="25">
    <fx:Declarations>
        
    </fx:Declarations>
    
    <s:Rect left="0" right="0" top="0" height="100%" >
        <s:fill>
            <spark:SolidColor color="0x968f89" alpha="1" />
        </s:fill>
    </s:Rect>
</s:SparkSkin>
I can also get this error to go away if I put this line in my build.xml file: "<include-sources dir="${src.dir}" includes="*"/>"
But then I get this error => "[compc] Error: Unsupported file type: C:\dev_projects\features\flex4version\web\OneVoice\src\components.xml"
components.xml is my manifest file.
Anyone know what the issue is? Why would I need the xmlns:spark="mx.graphics.*" namespace when I have xmlns:s="library://ns.adobe.com/flex/spark"?

Curious. Which version of the Flex SDK are you using?
Does this work if you try in a brand new project using Flex 4.1 or Flex Hero?
<?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">
    <s:controlBarContent>
        <s:Button label="goto s1" click="currentState = 's1';" />
        <s:Button label="goto s2" click="currentState = 's2';" />
        <s:Button id="sdkVer" initialize="sdkVer.label = mx_internal::VERSION;" click="System.setClipboard(sdkVer.label);" />
    </s:controlBarContent>
    <s:states>
        <s:State name="s1" />
        <s:State name="s2" />
    </s:states>
    <s:Rect left="30" right="20" top="20" bottom="30" >
        <s:fill>
            <s:SolidColor color="0x968f89" color.s2="haloOrange" alpha="1" />
        </s:fill>
    </s:Rect>
</s:Application>
Peter

Could not resolve mx:DataGrid to a component implementation

I'm very new at this. Building a mobile app. Running the latest Flex/FlashBuilder (4.6). When I compile I get this error: "could not resolve <mx:DataGrid> to a component implementation". Here is my code:
<?xml version="1.0" encoding="utf-8"?>

<s:View xmlns:fx="http://ns.adobe.com/mxml/2009"
                    xmlns:s="library://ns.adobe.com/flex/spark"
                    xmlns:mx="library://ns.adobe.com/flex/mx"
                    title="Jobs List">
          <fx:Script>
                    <![CDATA[
                              import mx.collections.*;
                              private var DGArray:Array = [
                                        {Lease:'Bagby Heirs', Well:'1', Location:'Quitman', Customer:'Fair Oil Company', ScheduleDate:'2/23/2012', ServiceDate:'5/16/2012'},
                                        {Lease:'ITU', Well:'301', Location:'Ingram Trinity', Customer:'Southwest Operating, Inc.', ScheduleDate:'3/19/2012', ServiceDate:'4/25/2012'},
                                        {Lease:'ITU', Well:'81', Location:'ITU', Customer:'Southwest Operating, Inc.', ScheduleDate:'3/19/2012', ServiceDate:'4/25/2012'},
                                        {Lease:'Tolliver A', Well:'5', Location:'Turner Town', Customer:'SEDI', ScheduleDate:'4/16/2012', ServiceDate:'5/11/2012'},
                                        {Lease:'W R Cady', Well:'1', Location:'Coffield', Customer:'Green River Resource', ScheduleDate:'5/9/2012', ServiceDate:'4/10/2012'},
                                        {Lease:'Royal National Bar', Well:'2', Location:'Coffield', Customer:'Green River Resource', ScheduleDate:'5/9/2012', ServiceDate:'4/10/2012'},
                                        {Lease:'Pan American L', Well:'1', Location:'Chandler', Customer:'East Texas Oil & Gas', ScheduleDate:'5/14/2012', ServiceDate:'6/8/2012'},
                                        {Lease:'Paluxy B Sand', Well:'5', Location:'West Tyler', Customer:'Culver & Cain', ScheduleDate:'6/1/2012', ServiceDate:'5/25/2012'},
                                        {Lease:'Wh Pittman Hei', Well:'2', Location:'Quitman', Customer:'Southwest Operating, Inc.', ScheduleDate:'7/10/2012', ServiceDate:'6/18/2012'},
                                        {Lease:'Vivian Pruitt', Well:'1', Location:'Crow - Hwy 80M', Customer:'Buffco Productions, Inc.', ScheduleDate:'8/7/2012', ServiceDate:'8/29/2012'}
                              [Bindable]
                              public var initDG:ArrayList;
                              //Initialize initDG ArrayList variable from the Array.
                              //If you use this technique to process an HTTPService,
                              //WebService, or RemoteObject result, use an ArrayCollection
                              //rather than an ArrayList.
                              public function initData():void {
                                        initDG=new ArrayList(DGArray);
                    ]]>
          </fx:Script>
          
          <fx:Declarations>
                    
                      <fx:Component className="AlertMsgDay">
                              <s:SkinnablePopUpContainer x="70" y="300">
                                        <s:TitleWindow title="Filtering" close="close()">
                                                  <s:VGroup horizontalAlign="center" paddingTop="8" paddingBottom="8" paddingLeft="8" paddingRight="8" gap="5" width="100%">
                                                            <s:Label text="This button will filter jobs to show only TODAY."/>
                                                            <s:Button label="OK" click="close()"/>
                                                  </s:VGroup>
                                        </s:TitleWindow>
                              </s:SkinnablePopUpContainer>
                    </fx:Component>
                    <fx:Component className="AlertMsgWeek">
                              <s:SkinnablePopUpContainer x="70" y="300">
                                        <s:TitleWindow title="Filtering" close="close()">
                                                  <s:VGroup horizontalAlign="center" paddingTop="8" paddingBottom="8" paddingLeft="8" paddingRight="8" gap="5" width="100%">
                                                            <s:Label text="This button will filter jobs to show only THIS WEEK."/>
                                                            <s:Button label="OK" click="close()"/>
                                                  </s:VGroup>
                                        </s:TitleWindow>
                              </s:SkinnablePopUpContainer>
                    </fx:Component>
          </fx:Declarations>
          <s:BorderContainer x="10" y="111" borderColor="#808080" cornerRadius="5" borderWeight="2" width="98%" height="369">
                    <s:Scroller width="100%" height="363" verticalScrollPolicy="on">
                              <s:Group width="100%" height="100%">
                                        <mx:DataGrid id="myGrid" width="900" height="350" dataProvider="{initDG}" > <<<< THE ERROR IS HERE
                                                  <mx:columns>
                                                            <mx:DataGridColumn dataField="Lease" />
                                                            <mx:DataGridColumn dataField="Well" />
                                                            <mx:DataGridColumn dataField="Location" />
                                                            <mx:DataGridColumn dataField="Customer" />
                                                            <mx:DataGridColumn dataField="ScheduleDate" headerText="Schedule Date" />
                                                            <mx:DataGridColumn dataField="ServiceDate" headerText="Service Date" />
                                                  </mx:columns>
                                        </mx:DataGrid>
                              </s:Group>
                    </s:Scroller>
          </s:BorderContainer>
          <s:Label x="10" y="10" width="96" height="53" fontSize="24" text="Sort by:"
                               verticalAlign="middle"/>
          <s:Button id="btn_show_today" x="104" y="11" width="105" height="53" label="Today"
                                fontSize="13" fontWeight="bold" click="(new AlertMsgDay()).open(this, false);"/>
          <s:Button id="btn_show_week" x="216" y="11" width="105" height="53" label="Week"
                                fontSize="13" fontWeight="bold" click="(new AlertMsgWeek()).open(this, false);"/>
          <s:Button x="348" y="10" width="184" height="53" label="Edit this Job" fontSize="18" click="navigator.pushView(views.JobFormView);"/>
</s:View>

I'm very new at this. Building a mobile app. Running the latest Flex/FlashBuilder (4.6). When I compile I get this error: "could not resolve <mx:DataGrid> to a component implementation". Here is my code:
<?xml version="1.0" encoding="utf-8"?>

<s:View xmlns:fx="http://ns.adobe.com/mxml/2009"
                    xmlns:s="library://ns.adobe.com/flex/spark"
                    xmlns:mx="library://ns.adobe.com/flex/mx"
                    title="Jobs List">
          <fx:Script>
                    <![CDATA[
                              import mx.collections.*;
                              private var DGArray:Array = [
                                        {Lease:'Bagby Heirs', Well:'1', Location:'Quitman', Customer:'Fair Oil Company', ScheduleDate:'2/23/2012', ServiceDate:'5/16/2012'},
                                        {Lease:'ITU', Well:'301', Location:'Ingram Trinity', Customer:'Southwest Operating, Inc.', ScheduleDate:'3/19/2012', ServiceDate:'4/25/2012'},
                                        {Lease:'ITU', Well:'81', Location:'ITU', Customer:'Southwest Operating, Inc.', ScheduleDate:'3/19/2012', ServiceDate:'4/25/2012'},
                                        {Lease:'Tolliver A', Well:'5', Location:'Turner Town', Customer:'SEDI', ScheduleDate:'4/16/2012', ServiceDate:'5/11/2012'},
                                        {Lease:'W R Cady', Well:'1', Location:'Coffield', Customer:'Green River Resource', ScheduleDate:'5/9/2012', ServiceDate:'4/10/2012'},
                                        {Lease:'Royal National Bar', Well:'2', Location:'Coffield', Customer:'Green River Resource', ScheduleDate:'5/9/2012', ServiceDate:'4/10/2012'},
                                        {Lease:'Pan American L', Well:'1', Location:'Chandler', Customer:'East Texas Oil & Gas', ScheduleDate:'5/14/2012', ServiceDate:'6/8/2012'},
                                        {Lease:'Paluxy B Sand', Well:'5', Location:'West Tyler', Customer:'Culver & Cain', ScheduleDate:'6/1/2012', ServiceDate:'5/25/2012'},
                                        {Lease:'Wh Pittman Hei', Well:'2', Location:'Quitman', Customer:'Southwest Operating, Inc.', ScheduleDate:'7/10/2012', ServiceDate:'6/18/2012'},
                                        {Lease:'Vivian Pruitt', Well:'1', Location:'Crow - Hwy 80M', Customer:'Buffco Productions, Inc.', ScheduleDate:'8/7/2012', ServiceDate:'8/29/2012'}
                              [Bindable]
                              public var initDG:ArrayList;
                              //Initialize initDG ArrayList variable from the Array.
                              //If you use this technique to process an HTTPService,
                              //WebService, or RemoteObject result, use an ArrayCollection
                              //rather than an ArrayList.
                              public function initData():void {
                                        initDG=new ArrayList(DGArray);
                    ]]>
          </fx:Script>
          
          <fx:Declarations>
                    
                      <fx:Component className="AlertMsgDay">
                              <s:SkinnablePopUpContainer x="70" y="300">
                                        <s:TitleWindow title="Filtering" close="close()">
                                                  <s:VGroup horizontalAlign="center" paddingTop="8" paddingBottom="8" paddingLeft="8" paddingRight="8" gap="5" width="100%">
                                                            <s:Label text="This button will filter jobs to show only TODAY."/>
                                                            <s:Button label="OK" click="close()"/>
                                                  </s:VGroup>
                                        </s:TitleWindow>
                              </s:SkinnablePopUpContainer>
                    </fx:Component>
                    <fx:Component className="AlertMsgWeek">
                              <s:SkinnablePopUpContainer x="70" y="300">
                                        <s:TitleWindow title="Filtering" close="close()">
                                                  <s:VGroup horizontalAlign="center" paddingTop="8" paddingBottom="8" paddingLeft="8" paddingRight="8" gap="5" width="100%">
                                                            <s:Label text="This button will filter jobs to show only THIS WEEK."/>
                                                            <s:Button label="OK" click="close()"/>
                                                  </s:VGroup>
                                        </s:TitleWindow>
                              </s:SkinnablePopUpContainer>
                    </fx:Component>
          </fx:Declarations>
          <s:BorderContainer x="10" y="111" borderColor="#808080" cornerRadius="5" borderWeight="2" width="98%" height="369">
                    <s:Scroller width="100%" height="363" verticalScrollPolicy="on">
                              <s:Group width="100%" height="100%">
                                        <mx:DataGrid id="myGrid" width="900" height="350" dataProvider="{initDG}" > <<<< THE ERROR IS HERE
                                                  <mx:columns>
                                                            <mx:DataGridColumn dataField="Lease" />
                                                            <mx:DataGridColumn dataField="Well" />
                                                            <mx:DataGridColumn dataField="Location" />
                                                            <mx:DataGridColumn dataField="Customer" />
                                                            <mx:DataGridColumn dataField="ScheduleDate" headerText="Schedule Date" />
                                                            <mx:DataGridColumn dataField="ServiceDate" headerText="Service Date" />
                                                  </mx:columns>
                                        </mx:DataGrid>
                              </s:Group>
                    </s:Scroller>
          </s:BorderContainer>
          <s:Label x="10" y="10" width="96" height="53" fontSize="24" text="Sort by:"
                               verticalAlign="middle"/>
          <s:Button id="btn_show_today" x="104" y="11" width="105" height="53" label="Today"
                                fontSize="13" fontWeight="bold" click="(new AlertMsgDay()).open(this, false);"/>
          <s:Button id="btn_show_week" x="216" y="11" width="105" height="53" label="Week"
                                fontSize="13" fontWeight="bold" click="(new AlertMsgWeek()).open(this, false);"/>
          <s:Button x="348" y="10" width="184" height="53" label="Edit this Job" fontSize="18" click="navigator.pushView(views.JobFormView);"/>
</s:View>

Could not resolve sparks component with Air 3.6 Beta

Description
Resource
Path
Location
Type
Could not resolve <s:SolidColor> to a component implementation.
ExpandingItemRenderer.mxml
/ProjectTest/src/renderers
line 59
Flex Problem
Could not resolve <s:State> to a component implementation.
ExpandingItemRenderer.mxml
/ProjectTest/src/renderers
line 33
Flex Problem
Could not resolve <s:State> to a component implementation.
ExpandingItemRenderer.mxml
/ProjectTest/src/renderers
line 34
Flex Problem
Could not resolve <s:Transition> to a component implementation.
ExpandingItemRenderer.mxml
/ProjectTest/src/renderers
line 38
Flex Problem
Could not resolve <s:Transition> to a component implementation.
ExpandingItemRenderer.mxml
/ProjectTest/src/renderers
line 47
Flex Problem
This is what i get with the latest Air 3.6 Beta SDK with a mobile project !
FB 4.7 shows the <mx:Transition> potential match but not the <s:Transition>. Its the same for all the other errors it shows the potential matches
Can someone provide a solution I even tried to add sparks.swc as external SWC but it doesn t work.

I Still have theses errors :
Description
Resource
Path
Location
Type
Could not resolve <s:State> to a component implementation.
MessageBox.mxml
line 129
Flex Problem
Could not resolve <s:State> to a component implementation.
MessageBox.mxml
line 130
Flex Problem
Could not resolve <s:State> to a component implementation.
MessageBox.mxml
line 131
Flex Problem
Even if I added the spark.swc
But the other errors are gone !

Could not resolve mx:AdvancedDataGrid to a component implimentation

   im trying to get this facebook application to work but i keep getting this error
when i run the application: could not resolve <mx:AdvancedDataGrid> to a component implimentation
it seems the namespaces are correct, what does this mean?
<s:Group xmlns:fx="http://ns.adobe.com/mxml/2009"
         xmlns:s="library://ns.adobe.com/flex/spark"
         xmlns:mx="library://ns.adobe.com/flex/halo" width="100%"
         height="100%" currentState="CONNECTING">
<mx:AdvancedDataGrid id="adgFriends" dataProvider="{userFriends}"
                         designViewDataType="flat" horizontalCenter="0"
                         verticalCenter="19" includeIn="CONNECTED">
        <mx:columns>
            <mx:AdvancedDataGridColumn headerText="Name"
                                       dataField="first_name"/>
            <mx:AdvancedDataGridColumn headerText="Last Name"
                                       dataField="last_name"/>
        </mx:columns>
    </mx:AdvancedDataGrid>
</s:Group>

if i change the xmlns:mx="library://ns.adobe.com/flex/halo" namespace to
xmlns:mx="library://ns.adobe.com/flex/mx" i get 2 sets of these errors
"access of undefined property AIR" and
"access of undefined property FLEX" referring to these pieces of code.
i am referencing the Facebook_library_with_AIRConnect_v3.4_flex.swc
           CONFIG::AIR
                // DesktopSessionHelper import required for AIR and Facebook Connect
                import com.facebook.utils.DesktopSessionHelper;
                import com.facebook.session.DesktopSession;
                // Session variable when running as AIR app
                protected var session:DesktopSessionHelper;
            CONFIG::FLEX
                // FacebookSessionUtil import required for Flex (browser) app
                import com.facebook.utils.FacebookSessionUtil;
                // Session variable when running as Flex (browser) app
                protected var session:FacebookSessionUtil;

Could not resolve Application to a component implementation.

Hi..
Am getting an error message Could not resolve <Application> to a component implementation. Am trying the following mxml code.
<?xml version="1.0" encoding="utf-8"?>

<Application name="FileReference_save_test"
        xmlns="http://ns.adobe.com/mxml/2009"
        xmlns:mx="library:adobe/flex/halo"
        xmlns:net="flash.net.*"
        layout="flex.layout.BasicLayout"
        creationComplete="init();">
    <Script>
        <![CDATA[
            private function init():void {
                textArea.text = describeType(FileReference).toXMLString();
            private function btn_click(evt:MouseEvent):void {
                fileReference.save(textArea.text, "describeType.txt");
        ]]>
    </Script>
    <Declarations>
        <net:FileReference id="fileReference" />
    </Declarations>
    <mx:Panel id="panel"
            width="500"
            height="300"
            verticalCenter="0"
            horizontalCenter="0">
        <mx:TextArea id="textArea"
                editable="true"
                width="100%"
                height="100%" />
        <mx:ControlBar horizontalAlign="right">
            <Button id="btn"
                    label="Save Text"
                    click="btn_click(event);" />
        </mx:ControlBar>
    </mx:Panel>
</Application>..
Help plz..

That's a different topic. Please mark this one as answered (by me ) and start a new topic.
If this post answers your question or helps, please mark it as such.

Using AIR 15 (10/14/2014): Could not resolve s:ViewNavigator to a component implementation.

Hi
I want to update to the newest version of AIR so I can upload my ipa to App Store. Usually I get AIR from the Apache Flex SDK installer, but it only has the beta version of 15.0.0.183. I have instead downloaded the SDK from
https://forums.adobe.com/thread/1603494
(AIR SDK 15 (Compatible with Flex) for Windows)
but when I compile, I get the following error:
Could not resolve <s:ViewNavigator> to a component implementation.
I have tried the following things:
* Downloaded AIR 15 SDK from Apache Flex and merged the new files into this SDK (same error)
* Downloaded AIR 15.0.0.183 beta from Apache Flex and merged the new files into this SDK (same error)
* Downloaded AIR 15.0.0.183 beta from Apache Flex (no error, but I don't know if Apple will accept this version)
Am I doing something wrong?
Thanks in advance
Mark

I think I got it to work. Apparantly there is a secret link called "Download Windows" below the yellow download button which is for Flex users even though I already chose the Flex version on the previous page.

Error "Could not resolve s:ViewNavigatorApplication to a component implementation...", after overlaying with AIR SDK 13.0

Just installed FB 4.7, overlayed with AIR SDK 13.0, started FlexMobileProject and I get this error "Could not resolve <s:ViewNavigatorApplication> to a component implementation...", which I can't get rid of. Tried 3-4 times, error stays.
I overwrote the Flex sdk 4.6.0 with Air SDK 13.0.
Is this a bug? Please help.

Thanks for the reply. I tried changing to the airmobile-config.xml but then I got the same error with a different componenet.
Error: Could not resolve <r:QContainer> to a component implementation. <r:QContainer id="d">
Could this related to a missing SWC from my build path do you think?

Error: Could not resolve s:states to a component implementation.

So I am trying to setup states on a Flex application I'm building, but it doesn't seem to want to compile. I get this error:
$ ./build.sh
Loading configuration file /Applications/Adobe Flash Builder 4/sdks/4.1.0/frameworks/flex-config.xml
uploader.mxml(24): Error: Could not resolve <s:states> to a component implementation.
    <s:states>
Here is my build command nothing special ...
$ cat ./build.sh
#!/bin/bash
mxmlc -output bin/uploader.swf src/uploader.mxml
I have a class that extends the Spark application like so ...
package com.uploader.controllers
    import spark.components.Application;
     dynamic public class FlashUploader extends Application
Then in my main application mxml file I use it like so ...
<?xml version="1.0" encoding="utf-8"?>
<c:FlashUploader 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:v="com.uploader.view"
    xmlns:c="com.uploader.controllers.*"
    minWidth="709" minHeight="400"
    skinClass="com.uploader.skins.UploaderApplicationSkin">
    <fx:Style source="styles.css" />
    
    <s:states>
        <s:State name="default" />
        <s:State name="startup" />
        <s:State name="uploading" />
        <s:State name="normal" />
    </s:states>
</c:FlashUploader>
Now when I try to compile I get the states error. I've found several examples and even made a dummy app just using the spark application and it compiles fine. Not sure if I'm doing anything weird here but the few other flex devs I know don't seem to see anything wrong with what I'm doing that could cause this.

When you define an object using a namespace you have to use the same namespace for its properties, so you will want to use "<c:states>" instead of "<s:states>" in this case.

Error: "Could not resolve [public class] to a component implementation

Here's another clueless newbie question! :-(
I define a public class "DynamicTextArea" at the top of the file, and get the compiler error message "Could not resolve <DynamicTextArea> to a component implementation" at the bottom of the same file.
Clearly, I don't understand something very basic.
(The code between the commenrted asterisks was originally in a separate package file, which I couldn't get either mxmlc or FlexBuilder to find, so rather than fight that issue now, I moved it into the same file.)
Here's the file:
<?xml version="1.0" encoding="utf-8" ?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
>

    <mx:Script>
    <![CDATA[
import flash.events.Event;
import mx.controls.TextArea;
public class DynamicTextArea extends TextArea{
    public function DynamicTextArea(){
      super();
      super.horizontalScrollPolicy = "off";
      super.verticalScrollPolicy = "off";
      this.addEventListener(Event.CHANGE, adjustHeightHandler);
    private function adjustHeightHandler(event:Event):void{
      trace("textField.getLineMetrics(0).height: " + textField.getLineMetrics(0).height);
      if(height <= textField.textHeight + textField.getLineMetrics(0).height){
        height = textField.textHeight;
        validateNow();
    override public function set text(val:String):void{
      textField.text = val;
      validateNow();
      height = textField.textHeight;
      validateNow();
    override public function set htmlText(val:String):void{
      textField.htmlText = val;
      validateNow();
      height = textField.textHeight;
      validateNow();
    override public function set height(value:Number):void{
      if(textField == null){
        if(height <= value){
          super.height = value;
      }else{
        var currentHeight:uint = textField.textHeight + textField.getLineMetrics(0).height;
        if (currentHeight<= super.maxHeight){
          if(textField.textHeight != textField.getLineMetrics(0).height){
            super.height = currentHeight;
        }else{
            super.height = super.maxHeight;
    override public function get text():String{
        return textField.text;
    override public function get htmlText():String{
        return textField.htmlText;
    override public function set maxHeight(value:Number):void{
      super.maxHeight = value;
    ]]>
</mx:Script>

     <mx:Script>
    <![CDATA[
      import mx.controls.Alert;
      private var str:String = "This text will be long enough to trigger " +
        "the TextArea to increase its height.";
      private var htmlStr:String = "This <b>text</b> will be <font color='#00FF00'>long enough</font> to trigger " +
        "the TextArea to increase its height.";
      private function setLargeText():void{
        txt1.text = str;
        txt2.text = str;
        txt3.text = str;
        txt4.text = str;
        txt5.htmlText = htmlStr;
        txt6.htmlText = htmlStr;
        txt7.htmlText = htmlStr;
        txt8.htmlText = htmlStr;
    ]]>
</mx:Script>
<DynamicTextArea id="txt1" width="300" height="14"/>
<DynamicTextArea id="txt2" width="300" height="20"/>
<DynamicTextArea id="txt3" width="300" height="28"/>
<DynamicTextArea id="txt4" width="300" height="50"/>
<DynamicTextArea id="txt5" width="300" height="14"/>
<DynamicTextArea id="txt6" width="300" height="20"/>
<DynamicTextArea id="txt7" width="300" height="28"/>
<DynamicTextArea id="txt8" width="300" height="50"/>
<mx:Button label="Set Large Text" click="setLargeText();"/>
</mx:Application>
     Thanks for any insight you can provide!
Harvey

Gordon:
    As you've noted, there were multiple misunderstandings.
    Some are due to references in the language which are different from uses in pre-existing languages.
    Take "name spaces". They look like URLs but they're not. One of the first errors I made when starting Flex was to try to browse to http://www.adobe.com/2006/mxml. I figured that it would have some description of the language. But it didn't. In spite of LOOKING like a URL, it doesn't point to anything; it's really just an arbitrary magic incantation, like "Open Sesame".
    But, then when I wanted to use my OWN namespace, I find that it's NOT arbitrary, and does have to point to something, but it's still not a URL. The "AHA" moment was when Michael told me that "*" means "look in this directory for a file with the name later named in an import statement, but not named here". And if the file was in subfolder "X" I'd have to use "X.*", while if it were a URL I'd use slash instead of dot, but never an asterisk.
    When the language syntax is so contrary to the expectations of people coming from a declarative language or web programming background, I think it is important to explicitly address the differences and disabuse them of their preconceptions. I think the same should apply to the ways in which ActionScript differs from ECMAScript.
    Another problem adding to my confusion is the habit of naming variables with the names of keywords but with capitalization changes. Not only does that set readers up for subtle "gotchas", but makes it unclear which names are truly arbitrary, and which are required by the compiler.
It might be a good idea to have a convention of an identifiable format for user variables. Many authors use names like myButton for that purpose.
    It would also be helpful if printed text could simulate the syntax coloring of the better editors, or at least have more in-source comments saying exactly what each line does. (Or both)
    Another aid to understanding would be to provide a reference to the alternative (MXML or AS) way of doing anything, whenever you demonstrate one of the ways.
    I find that the emphasis on using FlexBuilder distracts from a sense of what is really going on behind the scenes. E,g.: If FlexBuilder automatically sets up the folder structure, I don't learn to do it myself. I like to work at the code level, so when something goes wrong I don't have to worry about what level it went wrong at.
    Also, not everyone is willing to drop $600 or $250 BEFORE they've learned whether they even like Flex. Your tutorials are, by definition, addressed to newcomers who may well not yet have committed to the expense of FlexBuilder. So more emphasis on using mxmlc would be nice. It would also be helpful to discuss how to use local servers, like Tomcat, during the development stage.
    Thanks for asking my opinion. I'm afraid that my 40 years of programming experience may make it harder for me to adapt to this new style of programming than it would be for a kid with a tabula rasa. But, it looks like it'll be fun once I get over the hump!
Harvey

Error - Could not resolve s:Script to a component implementation?

Flex Builder 4.6, 60-day trial version. New to MXML / AS, but familiar with Java, Javascript, XML, OpenLaszlo. Ooooold, sloooow Vista box.
I want a bare-bones proof-of-concept class extending <s:Label> with a script responding to a click. Here's what I have:
Ptile.mxml (in package com.blackbird):
<?xml version="1.0" encoding="utf-8"?>
<s:Label 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:comp="com.blackbird.*"
    click="talkToMe()">
    <s:Script>
        <![CDATA[
        private function talkToMe() : void {
            trace("I'm alive, sarge");
        ]]>
    </s:Script>
</s:Label>
Calling application is :
TileTest.mxml (also package com.blackbird):
<?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"
    minWidth="955"     minHeight="600"
    xmlns:comp="com.blackbird.*">
    <s:BorderContainer width="100%" height="100%">
        <comp:Ptile x="40" y="200" />
    <s:BorderContainer/>
<s:Application>
Ptile.mxml won't compile - Error message in the editor is "Could not resolve <s:Script> to a component implementation". I've banged and hammered this around - namespaces, typos and syntax all checked, documentation, Google. No luck. For a bet, I'd guess it's a namespace problem - I'm a little shaky on that - but I'm sugared if I can find it.
Using the <mx:Script> or <fx:Script> tags also fails.
I've edited the Eclipse.ini file, as detailed here : http://forums.adobe.com/thread/449232. Nothing.
Anybody? Thanks.

There is no s:Script, it will be fx:Script and you will need the new Spark namespaces.
    xmlns:fx="http://ns.adobe.com/mxml/2009"
    xmlns:s="library://ns.adobe.com/flex/spark"

Could not resolve fx:Declarations to a component implementation.

Hi..
Am getting an error message
Could not resolve <fx:Declarations> to a component implementation.
and
Could not resolve <fx:Script> to a component implementation.
Am trying the following mxml code.
<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"
               minWidth="955" minHeight="600"
               creationComplete="application2_creationCompleteHandler(event)">
    <fx:Style source="Styles.css" />
    <fx:Declarations>
    </fx:Declarations>
    <fx:Script>
        <![CDATA[
        ]]>
    </fx:Script>
</s:Application>

Hi Hakan,
Was this problem ever solved, and if so, could you please tell me how?
TIA,
mlavie

Flex 4 mx:Component could not resolve

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