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<Android Live Wallpaper - Tutorial ⁄ >




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Live Wallpapers are animated, interactive backgrounds for the Android homescreen. A live wallpaper is similar to other Android applications and can use most of the same functionality.

To create a live wallpaper, you need to create a XML file which describes your wallpaper. This file should contain a description of the application and can contain a preview and a link to a preference activity which allow to customize the live wallpaper.

You also maintain a service which must extend the abstract class "WallpaperService". "WallpaperService"is the base class for all live wallpapers in the system. You must implement the method onCreateEngine() and return an object of type "Engine". This engine will handle the life cycle events, animations and drawings of the wallpaper. Here you find life cycle hooks, as for example onCreate(), onSurfaceCreated(), onVisibilityChanged(), onOffsetsChanged(), onTouchEvent() and onCommand() .

This service requires the permission "android.permission.BIND_WALLPAPER" and must be registered via an intent-filter to the action "android.service.wallpaper.WallpaperService".



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