Android - new BitmapDrawable deprecated 創建一個空白的drawable

創建一個空白的drawable

myPopupWindow.setBackgroundDrawable(new ColorDrawable(android.graphics.Color.TRANSPARENT));

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?

2down voteaccepted

Ok, instead of myPopupWindow.setBackgroundDrawable(new BitmapDrawable()); OR myPopupWindow.setBackgroundDrawable(new BitmapDrawable( getApplicationContext().getResources(), Bitmap.createBitmap(1, 1, Bitmap.Config.ARGB_8888) )); I just use a background-color that I want to set to the PopupWindow. So for example, one of my PopupWindows just had a few Images without margins in between them, so I just used a Transparent background for it: myPopupWindow.setBackgroundDrawable(new ColorDrawable(android.graphics.Color.TRANSPARENT)); And for another one I wanted to use a white background anyway, so I've used: myPopupWindow.setBackgroundDrawable(new ColorDrawable(android.graphics.Color.WHITE));