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This article mainly explains "the way to define and use renderers in Flex". The explanation in this article is simple and clear, easy to learn and understand. Please follow the ideas of Xiaobian slowly and deeply to study and learn "the way to define and use renderers in Flex" together!

Using ItemRenderer in Flex

Flex renderer is used very frequently, allowing users to define their own data display format, do. NET development friends I want to know the data control in the ItemTemplate, I personally think Flex renderer and. NET ItemTemplate from the functional point of view is not much different, in Flex to display a specific format can be customized through Flex renderer.

Flex renderer has been used in the article "Developing chat emoji function using TileList+ TitleWindow component", but there is no special introduction, here we use the internal ItemRenderer, in addition to this we can also use the external ItemRenderer. The name suggests that an internal ItemRenderer is nested directly inside Flex, while an external Flex Renderer defines the effects to be displayed through external components or classes.

The above is the internal ItemRenderer used by and within Flex components to define the ItemRenderer. If you want to use an external Flex renderer to implement it, you need to define an external Flex renderer to implement the Renderer format in a custom class or component, as follows:

package { importmx.core.UIComponent; publicclassFaceRendererextendsUIComponent { privatevarimageUrl:Image; publicfunctionFaceRenderer() { super(); } protectedoverridefunctioncreateChildren():void { imageUrl=newImage(); } protectedoverridefunctioncommitProperties():void { super.commitProperties(); imageUrl.source=data.ImageUrl; } } }

It is OK to reference a custom external renderer in the Flex component via Flex renderer properties.

Thank you for reading, the above is the "Flex definition and use of the renderer" content, after learning this article, I believe that we define and use Flex renderer in this way have a deeper understanding of the problem, the specific use of the situation also needs to be verified by practice. Here is, Xiaobian will push more articles related to knowledge points for everyone, welcome to pay attention!

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