I am looking into an issue in a Flex application where on OS X text is shifted up a couple pixels compared to windows. Every text field is not vertically aligned to the middle it is more towards the top.
Found a thread here but no real solution http://forums.adobe.com/message/2189821
Anyone know how to solve this problem in a way that applies to both systems.
My approach would be to conditionally adjust component positioning when OS X is detected.
<?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"
preinitialize="onPreinitialize()"
>
<fx:Script>
<![CDATA[
import mx.controls.Alert;
private function onPreinitialize():void
{
Alert.show((-1 != Capabilities.os.search(new RegExp('mac', 'i'))) ? 'Replace this Alert with code which adjusts text positioning in order for it to appear the same as when it runs on Windows.' : 'No need to adjust text', Capabilities.os);
}
]]>
</fx:Script>
</s:Application>
Related
I'm very new to the Flex Programming.
I was writing a sample program.
<?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>
<!-- Place non-visual elements (e.g., services, value objects) here -->
</fx:Declarations>
<mx:String id="message">Hello, World</mx:String>
<mx:Label text="{message}"/>
</s:Application>
But getting an error "could not resolve to a component implementation"
I have the following queries.
What does , tags refers to.
why i'm getting the above error.Please help
This code should work:
<?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>
<!-- Place non-visual elements (e.g., services, value objects) here -->
<fx:String id="message">Hello, World</fx:String>
</fx:Declarations>
<mx:Label text="{message}"/>
</s:Application>
What I did was:
Changed your string to <fx:String>
Moved it into the <fx:Declarations> tag.
Reason:
It looks a little like you trying to compile with the Flex 4 SDK and are mixing a little of Flex 3 and Flex 4. Anything starting with the namespace "s" is a Flex 4 Spark components. Anything with the namespace "mx" is from Flex 3.
In Flex 3 you could declare variables in the code, right next to any visual component and they were all declared with the "mx" namespace. With Flex 4, they changed it so that declaring things that are not visual components (like variables) need to be placed in the <fx:Declarations> tag, which is why there is the comment "Place non-visual elements (e.g., services, value objects) here". They also changed the namespace of those non-visual elements to "fx".
There is some explaination in Flex 3 equivalent of ''?
The spark Application container in Flex purportedly listens to the rightMouseUp and other right mouse button events. However, if press and release the right mouse button in the Flash player I only get the context menu.
How can I disable the context menu and make the application listen to right mouse button events instead?
Minimal example:
<?xml version="1.0"?>
<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"
mouseUp="onMouseUp(event)"
rightMouseUp="onRightMouseUp(event)"
>
<fx:Script>
<![CDATA[
import mx.controls.Alert;
private function onMouseUp(e:MouseEvent):void {
Alert.show('left mouse up');
}
private function onRightMouseUp(e:MouseEvent):void {
Alert.show('right mouse up');
}
]]>
</fx:Script>
</s:Application>
You should add higher vesrion of swf. like: -swf-version=20 in flex compiler in additional compiler arguments.
Here is the list of swf version with flash player version.
SWF Version
Hope it helps.
I have a spark List and using ArrayCollection as dataprovider for list. Initially when the list is populated sorting is done , but i need to add items to list quite frequently as they update on server. After i add item i have to re-sort the list. After applying sort and calling refresh() scrollbar resets itself to top.
I am looking for a way so that i can add items to list and keep sorting the list without resetting the scrollbar to top position.
I have read similar question earlier but in that question most users have said to store the VerticalScrollPostion in a variable and apply that VerticalScrollPosition back after the sorting is done. The problem with this is there is a jerk in scrollbar , as it goes to top after refresh and then scrolls back to position as applied. So this solution is not possible as items are added very frequently as it will make the scrollbar going up and down very frequently and annoying the users. Also does't look nice n professional
I need a way so that scrollbar stays in it place even after sorting is done.
Also i want to keep using useVirtualLayout=true for the List.
I was also trying to extent ArrayCollection but could't find a way to solve my problem.
Below is simple example(extracted from my main application) to illustrate the problem. Just Scroll to bottom of list and then press the Sort button(which will sort the list) and the scrollbar will jump to top position. I want scrollbar to stay at its position even after pressing Sort button:
<?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" creationComplete="application1_creationCompleteHandler(event)">
<fx:Declarations>
<!-- Place non-visual elements (e.g., services, value objects) here -->
</fx:Declarations>
<fx:Script>
<![CDATA[
import mx.collections.ArrayCollection;
import mx.collections.SortField;
import spark.collections.Sort;
[Bindable] protected var ar_c:ArrayCollection;
protected var dgArray:Array=new Array();
protected function application1_creationCompleteHandler(event:FlexEvent):void
{
for(var i:int=0;i<20;i++)
dgArray.splice(-1,0,{label:"h"+i});
ar_c= new ArrayCollection(dgArray);
}
protected function sort_list():void{
var sort:spark.collections.Sort=new Sort();
sort.fields=[new SortField("label",false,true)];
ar_c.sort=sort;
ar_c.refresh();
}
]]>
</fx:Script>
<s:List x="42" y="41" id="mylist" width="199" height="253" dataProvider="{ar_c}" useVirtualLayout="true"></s:List>
<s:Button x="295" y="40" label="Sort" click="sort_list();"/>
</s:Application>
I think a sort is applied once and then everything added to the ArrayCollection later on is sorted on. You only have to add the sort once, and then call refresh once to apply the sort.
I'm trying to make an application with flash builder that performs operations on square matrices. I take in the size of he matrix (n) but now, I am having difficulty figuring out how to generate an n by n grid of text inputs where the user can enter the matrix element values
Yeap, do just like Peter Hall said. Use DataGroup with tile layout.
<s:DataGroup itemRenderer="Groups.DataGroupRenderer">
<s:layout>
<s:TileLayout horizontalGap="5" verticalGap="5" requestedRowCount="3" requestedColumnCount="3"/>
</s:layout>
<s:dataProvider>
<s:ArrayCollection>
<fx:String>1</fx:String>
<fx:String>2</fx:String>
<fx:String>3</fx:String>
<fx:String>4</fx:String>
<fx:String>5</fx:String>
<fx:String>6</fx:String>
<fx:String>7</fx:String>
<fx:String>8</fx:String>
<fx:String>9</fx:String>
</s:ArrayCollection>
</s:dataProvider>
</s:DataGroup>
And renderer:
<?xml version="1.0" encoding="utf-8"?>
<s:ItemRenderer xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx"
autoDrawBackground="true">
<s:TextInput text="{data}"/>
</s:ItemRenderer>
Of course if you know Flex at least in basic level, you will know how to do it all dynamically.
Use a DataGroup with a TileLayout.
Our AIR app consists from multiple modules. Each module extends MovieClip class. But when I am adding AmChart component to one of these modules, it is not rendering. Here the sample (PieChart.mxml):
<?xml version="1.0" encoding="utf-8"?>
<s:SkinnableContainer 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:amcharts="http://www.amcharts.com/com_internal"
width="100%" height="100%">
<fx:Declarations>
<!-- Place non-visual elements (e.g., services, value objects) here -->
</fx:Declarations>
<fx:Script>
<![CDATA[
import mx.collections.ArrayCollection;
[Bindable]
private var chartData:ArrayCollection = new ArrayCollection([
{country:"Czech Republic",litres:156.90},
{country:"Ireland",litres:131.10},
{country:"Germany",litres:115.80},
{country:"Australia",litres:109.90},
{country:"Austria",litres:108.30},
{country:"UK",litres:99.00},
{country:"Belgium",litres:93.00}]);
]]>
</fx:Script>
<amcharts:AmPieChart width="100%" height="100%" dataProvider="{chartData}" titleField="country" valueField="litres"/>
</s:SkinnableContainer>
And this is a sample usage:
var chart:PieChart = new PieChart();
cContainer.addChild(chart);
cContainer - is instance of MovieClip.
Can you suggest why this is not rendering? Maybe this seems a silly question, but I am a quite newbie to Flex. Please, help.
You may want to try using the dataset syntax used here http://blog.amcharts.com/2010/11/amstock-flex-tutorial-part-1-basics.html, and also try using a number for width and height until you get it working, rather than a percentage. If neither of those works, you may want to try asking the people who wrote this.
HTH;
Amy