How to remove bottom line in android SearchView component?

Question

How to remove bottom line in android SearchView component? Like in this image:

Answer 1

<androidx.appcompat.widget.SearchView
  app:queryBackground="@null"
  ...
/>

Setting this to @null in your XML will remove the colored bar.

Answer 2

If you using the android namespace in your SearchView xml, the best way to remove the bottom line is:

android:queryBackground="@null"

Answer 3

When you get a reference to your SearchView; This will work:

val backgroundView = searchView.findViewById(android.support.v7.appcompat.R.id.search_plate) as View
backgroundView.background = null