If your application uses images, you probably need something a bit more robust than conditional styles, such as those used in the previous section. Creating individual image sets for each device would be a nightmare. Fortunately, the folks at Sencha have an answer to this problem: a web-based service called
Sencha.io Src is a separate service from Sencha and can be used in any web-based application. The service works by taking an original image and resizing it on the fly to fit the current device and screen size. These images are also cached by the service and optimized for quick, repeatable delivery. To use the
Sencha.io Src service, the only thing you need to change is the URL for ...