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Next will be my concrete implementation on the animating coin. Let me remind you that the redraw is so heavy that you shouldn’t do too much, so it is stopped immediately after it is done. In this android animation tutorial we’ll go with XML codes for adding animations into our application. Animations in android apps can be performed through XML or android code. In this video youll learn how you can animate your apps logo on the splash screen with the official Splash Screen API. Note that the AnimationFinished() is here for the parent to know if it can still need to poll the redraw regularly. Android Animation is used to give the UI a rich look and feel. IAnimatable is the interface that let your custom animation do the work. Public abstract void Draw(Bitmap canvas) Public abstract boolean AnimationFinished() (NB: I am much more comfortable to use C# like naming convention for classes/objects) This function allows you to put a Bitmap class object to it and together with simple Handler, you can make 80s animation back to life! You can get the source code of the default Android Launcher via Git. Since you have the only way to interact/control your widget is with RemoteViews, we have to consider what can be done there, and the entry point of this, will be the SetImageViewBitmap(int, Bitmap). Writing your own home screen application is possible. The remote view (setInt) not even let me change the layout setting on my views! Correction: While SetInt cannot, there something called SetBundle in RemoteViews that accepts multiple parameter and thus, you can call setPadding() of view from there. Although it sounds easy (move the block up and down, shows a moving & rotating coin) and hey, it’s only 80s NES animation, there’s no help from the android system. Recently I pop out with an idea of making a Mario Coin Block Widget, if you click (or should I say, TAP?) on it, a coin will come out. So the Android API itself simply want to stop you to do this.īut do we have to stop here? Not really, we still need some sort of animation happens in our widget, with standard home screen supported (ie no need custom home). UPDATE: The code for this is open-sourced.