EditText에 자동으로 포커스(Focus)되는것 막기

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/default_background"
    android:focusable="true"
    android:focusableInTouchMode="true"
>

부모 Layout 속성에 focusable, focusableInTouchMode 추가

android:focusable="true"
android:focusableInTouchMode="true"