http://mikeorth.com Flex, Actionscript Thu, 29 Mar 2012 20:13:16 +0000 http://backend.userland.com/rss092 en Drag and drop is easy in Flex when you have basic requirements. Just setup a list with dragEnabled="true" and you're up and running. However, what if you need to disable dragging for only a select few items in your list? For example, if you have a list ... http://mikeorth.com/2012/disable-drag-for-certain-items-in-list While it's still default for a Label to truncate and show ellipses if the text is too long, it's no longer default to show a tooltip (as it was in mx). Easy fix for this is the aptly named property: http://mikeorth.com/2012/spark-label-tooltip If you've embedded a font in a Spark application, you may have noticed that your Alerts and Tooltips are now empty. This is due to the Device 4 font embedding in Flex 4 for Spark components. So any mx controls will not be able to read those fonts. ... http://mikeorth.com/2012/embedded-fonts-with-tooltip-and-alert-in-flex-4 Most metadata tags in Flex have default property values. For example, the following are equivalent: [Embed(source="/path/img.png")] [Embed("/path/img.png")] However, when using RemoteClass, even though it only has 1 possible parameter ("alias"), it still requires that you specify the property name as follows: // Correct: [RemoteClass(alias="com.myDTO")] // NOT correct: [RemoteClass("com.myDTO")] http://mikeorth.com/2011/remoteclass-must-specify-alias This is a fantastic external debugger for Flex/Flash applications. The primary thing I love is being able to change properties at run time, and being able to execute methods. Grab it here, it's free: Monster Debugger http://mikeorth.com/2011/monster-debugger For future reference, trying to remember what the property name was for the interval or step size for a slider. The property is named "snapInterval" http://mikeorth.com/2010/slider-increment-snapinterval When doing any state transitions, you have to be sure to specify the intended target. For instance, recently I was debugging some client code to see why a fade wasn't working. It turned out that the target was set to the parent group instead of each specific component. http://mikeorth.com/2010/targeting-the-right-component-for-transitions After moving from projects that religiously used FlexFormatter to one that didn't, I realized just how nice this plugin is. If by chance you haven't heard of it, FlexFormatter is an eclipse plugin that will format spaces, tabs, declarations, reorder properties & functions, indent, and lots more. To install, use ... http://mikeorth.com/2010/flex-formatter I added a lot of new custom Flex components to my library, MikeOrthLib. It includes a PagedDataGrid control, some handy popup base classes, and other utility components. Check out the example application (work in progress). Visit the project home page. http://mikeorth.com/2010/mikeorthlib-updated If you ever get the eclipse "Out of Memory" error, then you need to increase the default memory size. It's relatively easy, but you have to know where to look. In your eclipse install folder, right click on the Eclipse launcher and choose "Show Package Contents". Then navigate to ... http://mikeorth.com/2010/28