BitmapFactory.decodeResource() returns null for shape defined in xml drawable

后端 未结 4 1425
有刺的猬
有刺的猬 2020-12-14 14:25

I looked through multiple similar questions, although I haven\'t found proper answer on my query.

I have a drawable, defined in shape.xml



        
4条回答
  •  刺人心
    刺人心 (楼主)
    2020-12-14 14:47

    public static Bitmap convertDrawableResToBitmap(@DrawableRes int drawableId, Integer width, Integer height) {
        Drawable d = getResources().getDrawable(drawableId);
    
        if (d instanceof BitmapDrawable) {
            return ((BitmapDrawable) d).getBitmap();
        }
    
        if (d instanceof GradientDrawable) {
            GradientDrawable g = (GradientDrawable) d;
    
            int w = d.getIntrinsicWidth() > 0 ? d.getIntrinsicWidth() : width;
            int h = d.getIntrinsicHeight() > 0 ? d.getIntrinsicHeight() : height;
    
            Bitmap bitmap = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888);
            Canvas canvas = new Canvas(bitmap);
            g.setBounds(0, 0, w, h);
            g.setStroke(1, Color.BLACK);
            g.setFilterBitmap(true);
            g.draw(canvas);
            return bitmap;
        }
    
        Bitmap bit = BitmapFactory.decodeResource(getResources(), drawableId);
        return bit.copy(Bitmap.Config.ARGB_8888, true);
    }
    
    //------------------------
    
    Bitmap b = convertDrawableResToBitmap(R.drawable.myDraw , 50, 50);
    

提交回复
热议问题