The following example shows how you can fade in a Spark DropDownList pop up menu in Flex Gumbo by creating a custom DropDownList skin and setting the transitions property to a transition Fade effect.
Full code after the jump.
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transitions
In a previous post, “Toggling a Flex container’s visibility”, we looked at toggling a VBox container’s visibility by setting both the visible property and includeInLayout property. While the approach felt a little crude, we can build the same thing using the much more powerful view states. What are view states and how do we use them? Well, if you’re new to states, this should clear everything up: “Adobe – Flex Quick Start Basics: Creating States”.
Now, with that out of the way, lets look at some code and a basic example.
Full code after the jump.
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