i have this view:
<AutoCompleteTextView
android:id="@+id/search_bar"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignBottom="@+id/rect_search"
android:layout_alignLeft="@+id/rect_search"
android:layout_alignRight="@+id/rect_search"
android:layout_alignTop="@+id/rect_search"
android:hint="@string/search_bar"
android:textSize="20sp" />
as you can see, this view goes inside another view, rect_search, that is an ImageView. Now i've noticed that AutoCompleteTextView widget has a default underline on bottom, and i would remove it. It's possible?
Just put:
android:background="@android:color/transparent"
inside your view.
EDIT: As @kiya said, nowadays is better to use
android:backgroundTint="@android:color/transparent"
As it maintains the view size.