Category Archives: Apache Flex

Posts about Apache Flex coding, examples and discussion.

Update to Egg Timer

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On one of my projects at work I ended up using two Egg Timers but in different states. Since it would be easier to know if the correct Egg Timer was in the correct state, I added a couple of new parameters to the Egg Timer. Then I replaced the static colors with these defined variables to make it work. After those simple changes, the Egg Timer parameters can easily be added when placing the component. Fairly simple. Since the color parameters are already set as uint, there is no for any further conversion to make the color. I also Continue reading Update to Egg Timer→

ArrayCollection SortOn before a Sort

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I have a display screen that shows a list of items waiting to be acknowledged by technicians. If the page isn’t acknowledged, then the page is escalated up to the next level. The display uses a DataGrid and when the number of items exceeds the displayable rows on the DataGrid, it uses pagination functions to create multiple pages for viewing the other items. When an ArrayCollection is sliced for each page, it causes an issue with sorting. When the data was sorted by level and datetime, it would only sort on the current slice of data, even if I sorted Continue reading ArrayCollection SortOn before a Sort→

Simple DataGrid with ArrayCollection Update Example

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I was helping out on the Flex community forum and one of the posts needed a little more of example than I could give using the forum post tools. So, I decided to create a quick example of a DataGrid using an ArrayCollection for the dataprovider. The ArrayCollection is created dynamically using a randomization selection from two static arrays. Then there is an option for updating the list showing which of the items have “Red” as the color value. I also put a couple of other items in the example, including an ItemRenderer for the DataGrid and a button holder Continue reading Simple DataGrid with ArrayCollection Update Example→

Spark LineGrid Component

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Since I had a day off, I decided to work on converting my old Flex Examples to the new Flex 4.  As stated in a previous post, the new Flex 4 breaks Degrafa and Degrafa seems to be defunct now.  Most of the drawing functions are handled with spark and sprite functions, but little things like arcs and line repeaters are not.  So where before it was easy enough to create a repeating line in Degrafa, now I have to do a loop to create the lines needed.  Well, in this case, instead of drawing lines, I’m drawing rectangles.  While Continue reading Spark LineGrid Component→

Autoscroll Textarea

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One of the ways I like to debug my Flex applications is putting a TextArea item that is visible when needed to display certain items that usually would be display in a trace.  The benefit of this little trick is that I can see what is going on without having to go through Flex Builder.  Also, I happened to create a web service debugging application and it displayed the error and result text from the web service.  When displaying either debug or general result information, it is helpful if the TextArea scrolls up to show the latest information added.  I Continue reading Autoscroll Textarea→

New sprite Egg Timer

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At work I upgraded to Flex 4.5 and started updating one of my projects.  I started running into errors with my components that used Degrafa.  Apparently the Degrafa group has stopped working on updates and code in Flex 4 has broken the arc and wedge drawing utilities.  This causes a problem with my Egg Timer component, because it relies on the wedge or arc for the display.  I decided to use the new functions of Flex to create the timer.  Unfortunately, Flex still doesn’t have it’s own wedge or arc drawing utilities.  It does have a curveTo method as part Continue reading New sprite Egg Timer→