LayoutBlurActivity.java 文件源码

public static Bitmap getTransparentBitmap(View parent) {

        //create a bitmap
        if (parent.getWidth() == 0 || parent.getHeight() == 0) {
            return null;
        }
        int width = parent.getWidth();
        int height = parent.getHeight();
        Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
        Canvas canvas = new Canvas(bitmap);

        ShapeDrawable shapeDrawable = new ShapeDrawable(new RectShape());
        shapeDrawable.setAlpha(180);
        shapeDrawable.getPaint().setColor(0x66000000);
        shapeDrawable.setBounds(0, 0, width, height);
        shapeDrawable.draw(canvas);
        return bitmap;
    }