动态设置shape的两种方式

           1.   GradientDrawable drawable = (GradientDrawable)layout.getBackground();

                drawable.setShape(GradientDrawable.RECTANGLE);

                drawable.setStroke(1, Color.parseColor("#F89679"));

                drawable.setColor(Color.parseColor("#F89679"));

                drawable.setCornerRadius(5);

            2.GradientDrawable drawable = new GradientDrawable();

                 drawable.setColor(Color.parseColor("#F89679"));

                view.setBackground(drawable);