Widget - Listview Selector

listview1.setSelector(android.R.color.transparent);

//You can change the color & radius too.
//1.create gradient

android.graphics.drawable.GradientDrawable style = new android.graphics.drawable.GradientDrawable();

//2.set the gradient color & radius

style.setColor(Color.parseColor("#B3E5FC"));
style.setCornerRadius(17);

//.set listview1 selector to it

listview1.setSelector(style);