android:id="@+id/nav_upper"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/nav_upper"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintBottom_toTopOf="@+id/nav_fixed_items"
app:layout_constraintTop_toBottomOf="@+id/nav_header">
app:layout_constraintBottom_toTopOf="@+id/nav_fixed_items"
app:layout_constraintTop_toBottomOf="@+id/nav_header">