BottomDrawer | BottomSheet with animations | Android library

I have a bottom drawer in a screen. Code:

I've making a app by flutter but some issues which hard to find make me hard one of them is dynamic bottom bar

I currently have a view controller that has a container view which functions similar to the bottom drawer in the iOS Maps application. When an image is scanned, the drawer animates onto the screen (it begins hidden off the screen at (0,700)) and displays information that comes from Firebase. Within this container, I have another container that allows me to have a PageViewController setup. This setup allows the user to swipe between 2 different sets of information (all of which needs to be loaded from Firebase).

I don't know how to reset the data within the second PageViewController so that whenever the drawer is dismissed through a button, the PageViewController system resets and I can use my function inside the secondPageViewController to reload the tableView it has inside.

TL;DR / More Information

• Scanning an image is what loads the information into the ViewControllers.

• I have one independent VC (ViewController) with a container view inside of it (BottomDrawerViewController). The BottomDrawerViewController also has a container inside of it which is a PageViewController with 2 pages (Swipe1ViewController & Swipe2ViewController)

• The first page of the PageViewController setup works fine (Most likely because that information is loaded using an NSNotification)

• I haven't been able to use an NSNotification to send and refresh this data the same way because this is not the first view controller that shows up after I post my notification.

• I can't just load all my information independently in the second PageViewController because I get the pathway to the Firebase information from my original ViewController

Question: How can I reset both this data and the PageViewController so that whenever the user dismisses the bottom drawer the information on the second page is able to be refreshed on the next scan and the PageViewController starts on the first page? I thought maybe by forcing the view to disappear so that ViewDidLoad is called when it appears on screen but I am realizing this isn't possible.

I've attached some of the important code from all of the view controllers and my Firebase code in image and JSON form just in case that helps.

ViewController: -- This is the part that gets information to send to containers and what animates in the main container

I am using mechanism to move Stacklayout with gestures. Is there another event that detects StackLayout's Y position change? Meaning that I would like to catch when the StackLayout position is being panned up or down.

I'm trying to remove the display of a button if the content is showing / not showing, see code below.