Android set radius programatically to ShapeDrawable

问题

Can I set a radius programmatically to a ShapeDrawable?

回答1:

You can do it like this:

public static void customView(View v, int backgroundColor, int   borderColor)
{
  GradientDrawable shape = new GradientDrawable();
  shape.setShape(GradientDrawable.RECTANGLE);
  shape.setCornerRadii(new float[] { 8, 8, 8, 8, 0, 0, 0, 0 });
  shape.setColor(backgroundColor);
  shape.setStroke(3, borderColor);
  v.setBackgroundDrawable(shape);
}

You can use this function throughout your app and can put border and background color of your choice.

回答2:

try this:

        LayerDrawable bgDrawable = (LayerDrawable) btnCallnow.getBackground();
        final GradientDrawable shape = (GradientDrawable) bgDrawable.findDrawableByLayerId(R.id.shape_id);
        shape.setCornerRadius(5.0f);

来源：https://stackoverflow.com/questions/43039433/android-set-radius-programatically-to-shapedrawable