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

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

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    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

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

    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
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  • 原文地址:https://www.cnblogs.com/pengmn/p/15399215.html
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