There are several types of images in LWUIT, most of which can be stored either individually in the Java archive (JAR™) or packaged as part of a resource bundle.
To load an image stored in the JAR file, use the following code:
Image image = Image.createImage("/images/duke.png");
The Image tag supports the following attributes:
|
name |
The name of the resource (defaults to the name of the file name). |
|
file |
The file that would be used for the image (required). |
Once loaded, the image is ready to be used as a background image of a component or even as an icon for a component that can contain an image.
The LWUIT Resource Editor supports the following image types:
RGB: Standard JPG/PNG formats. Indexed PNGs also work very well (and are highly recommended) with this image type.
SVG: SVG Tiny images are supported. LWUIT can optionally seamlessly generate PNG images for the SVG files when a device doesn't support SVG.
Multi-Image: One can add several images based on the DPI of the device (one of several predefined family ranges). Irrelevant images are skipped when loading the resource file .
Multi-images are ideal for icons or small artifacts that are hard to scale properly. They are not meant to replace things such as 9-image borders and so forth since adapting them to every resolution or to device rotation isn't practical.
Timeline: A timeline is a set of images that can be moved rotated, scaled, and blended to provide interesting animation effects.Timelines allow rudimentary animation and enable GIF importing using the resource editor.