This border is used to show that the element is focused (i.e. you can type in the input or press the button with Enter). You can remove it with outline property, though: textarea:focus, input:focus{ outline: none; } You may want to add some other way for users to know what element has keyboard focus though … Read more
Adding the tags android:focusableInTouchMode=”true” and android:focusable=”true” to the parent layout (e.g. LinearLayout or ConstraintLayout) like in the following example, will fix the problem. <!– Dummy item to prevent AutoCompleteTextView from receiving focus –> <LinearLayout android:focusable=”true” android:focusableInTouchMode=”true” android:layout_width=”0px” android:layout_height=”0px”/> <!– :nextFocusUp and :nextFocusLeft have been set to the id of this component to prevent the dummy … Read more