Android - new BitmapDrawable deprecated 创建一个空白的drawable

 

 

Android - new BitmapDrawable deprecated 创建一个空白的drawable

sfshine 2014-12-08 11:22:29  3772  收藏

分类专栏： Android

 

Android专栏收录该内容

471 篇文章0 订阅

订阅专栏

创建一个空白的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:

1.  
   myPopupWindow.setBackgroundDrawable(new BitmapDrawable(
2.  
   getApplicationContext().getResources(),
3.  
   Bitmap.createBitmap(0, 0, Bitmap.Config.ARGB_8888)
4.  
   ));

This gave me an error that a Bitmap must have a width and height bigger than 0.

Right now I use:

1.  
   myPopupWindow.setBackgroundDrawable(new BitmapDrawable(
2.  
   getApplicationContext().getResources(),
3.  
   Bitmap.createBitmap(1, 1, Bitmap.Config.ARGB_8888)
4.  
   ));

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));

 

 

 

 

 

https://blog.csdn.net/sfshine/article/details/41801301