A Flutter Widget that is scrollable with a sticky footer either stick to the bottom of screen of the end of the scroll body.
Background
This package using SingleScrollView and CustomMultiChildLayout to acheive a scrollable widget with a sticky footer. This allow a dynamic height of child widgets in scroll body.
At the same time, because of the SingleScrollView with Column approach, this is not recommended to use with lots of child widgets for performance reason. You may simiply test with the example to see whether it is fit for your case.