binding.searchEt.setOnFocusChangeListener { view, hasFocus ->
        if (hasFocus) {
            binding.appBarLayout.setExpanded(false, true)
        } else {
            binding.appBarLayout.setExpanded(true, true)
        }
    }

<EditText
     android:id="@+id/searchEt"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
     android:layout_centerVertical="true"
     android:layout_marginStart="8dp"
     android:layout_toStartOf="@+id/close_button"
     android:layout_toEndOf="@+id/ic_search"
     android:background="@android:color/transparent"
     android:focusable="true"
     android:focusableInTouchMode="true"
     android:fontFamily="@font/catamaran_bold"
     android:hint="@string/search_hint"
     android:imeOptions="actionSearch"
     android:includeFontPadding="true"
     android:orientation="vertical"
     android:paddingStart="12dp"
     android:singleLine="true"
     android:textAlignment="viewStart"
     android:textColor="#000"
     android:textDirection="locale"
     android:textSize="18dp"
     tools:text="alskjfdn" />