In this Flash and ActionScript 3.0 video tutorial with source file we demonstrate how to program the uiLoader component to load an external image and listen to its load progress percentage. The UILoader class makes it possible to set content to load and to then monitor the loading operation at run time. This class also handles the resizing of the loaded content. If loading content from a different domain, security implications may mean content properties are inaccessible. Please see the Loader class for more information.