I've used a PopupWindow. With this PopupWindow I set the BackgroundDrawable to an empty BitmapDrawable.
When I use the following code it gives a deprecated warning:
myPopupWindow.setBackgroundDrawable(new BitmapDrawable());
So I changed it to:
myPopupWindow.setBackgroundDrawable(new BitmapDrawable(
getApplicationContext().getResources(),
Bitmap.createBitmap(0, 0, Bitmap.Config.ARGB_8888)
));
This gave me an error that a Bitmap must have a width and height bigger than 0.
Right now I use:
myPopupWindow.setBackgroundDrawable(new BitmapDrawable(
getApplicationContext().getResources(),
Bitmap.createBitmap(1, 1, Bitmap.Config.ARGB_8888)
));
And it works. But it just seems a bit wrong to use a 1x1 pixel Bitmap instead of a completely empty one like I want to. Is there another way to actually use an empty BitmapDrawable, instead of one that is 1 by 1 pixels?