android:layout_width="80dp"
android:layout_height="80dp"
android:layout_margin="4dp"
+ android:indeterminate="true"
android:visibility="invisible"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent" />
android:layout_gravity="center"
android:padding="@dimen/fab_margin"
android:tint="@android:color/white"
+ android:visibility="visible"
app:backgroundTint="@color/colorPrimary"
app:layout_constraintBottom_toBottomOf="@id/save_transaction_progress"
app:layout_constraintEnd_toEndOf="@id/save_transaction_progress"