Animation in cell stopping when other cell's animation finishes - ios

Question

I'm having an issue with the animations in my TableViewCells. Whenever someone crosses of an item on their list, a progress bar animates from 0.0 to 1.0 in 4 seconds:
func startAnimation() {
let generator = UIImpactFeedbackGenerator(style: .medium)
generator.impactOccurred()
if items![indexRow!].checked {
self.delegate?.changeButton(state: false, indexSection: indexSection!, indexRow: indexRow!, itemID: itemID!)
self.progressBar.setProgress(0.0, animated: false)
self.checkBoxOutlet.setBackgroundImage(#imageLiteral(resourceName: "checkBoxOUTLINE "), for: .normal)
} else {
self.checkBoxOutlet.setBackgroundImage(#imageLiteral(resourceName: "checkBoxFILLED "), for: .normal)
self.tempState = true
UIView.animate(withDuration: 4.0, animations: {
self.progressBar.setProgress(1.0, animated: true)
}) { (finished: Bool) in
self.workItem = DispatchWorkItem {
self.delegate?.changeButton(state: true, indexSection: self.indexSection!, indexRow: self.indexRow!, itemID: self.itemID)
}
DispatchQueue.main.asyncAfter(deadline: .now() + 3.3, execute: self.workItem!)
}
}
}
This works, and the animation performs nicely. However, whenever multiple items are being checked quickly after each other, the animation stops when the first animation triggered is completed. Here is a screenrecord of the issue.
As you can see, there are 2 major issues:
The animation of the other cells stop abruptly
Cells that aren't supposed to be deleted get deleted.
I suspect that the issues lies in the delegate method that gets triggered, and not the animation here. This is my delegate method (which updates data in Firestore):
func changeButton(state: Bool, indexSection: Int?, indexRow: Int?, itemID: String?) {
if let indexSection = indexSection, let indexRow = indexRow {
sections[indexSection].items[indexRow].checked = state
}
let generator = UIImpactFeedbackGenerator(style: .light)
generator.impactOccurred()
if let itemID = itemID {
let itemRef = db.collection(K.FStore.lists).document(currentListID!).collection(K.FStore.sections).document("\(indexSection!)").collection(K.FStore.items).document(itemID)
if sections[indexSection!].items[indexRow!].checked {
itemRef.updateData([
K.Item.isChecked: true,
K.Item.checkedBy: currentUserID!,
K.Item.dateChecked: Date()
]) { err in
if let err = err {
print("Error writing document: \(err)")
} else {
print("Document successfully written!")
}
if let indexSection = indexSection, let indexRow = indexRow {
if self.sections[indexSection].items != nil {
let item = self.sections[indexSection].items[indexRow]
let itemRef = self.db.collection(K.FStore.lists).document(self.currentListID!).collection(K.FStore.sections).document("\(indexSection)").collection(K.FStore.items).document(item.itemID!)
itemRef.getDocument { (document, error) in
if let document = document, document.exists {
// Get the properties of the item
let name = document.data()?[K.Item.name] as? String
let uid = document.data()?[K.Item.uid] as? String
let category = document.data()?[K.Item.categoryNumber] as? Int
let isChecked = document.data()?[K.Item.isChecked] as? Bool
let dateCreated = document.data()?[K.Item.date] as? Date
let dateChecked = document.data()?[K.Item.dateChecked] as? Date
let checkedBy = document.data()?[K.Item.checkedBy] as? String
self.db.collection(K.lists).document(self.currentListID!).collection(K.FStore.sectionsChecked).document("\(category!)").collection(K.FStore.items).addDocument(data: [
K.Item.name: name,
K.Item.isChecked: isChecked,
K.Item.categoryNumber: category,
K.Item.date: dateCreated,
K.Item.dateChecked: dateChecked,
K.Item.checkedBy: checkedBy,
K.Item.uid: uid,
K.Item.dateDeleted: Date()
]) { err in
if let err = err {
print("Error adding document: \(err)")
} else {
let cell = self.tableView.cellForRow(at: IndexPath(item: indexRow, section: indexSection)) as? TaskCell
if let cell = cell {
cell.progressBar.setProgress(0.0, animated: false)
}
// If successful, delete the item in the normal collection
itemRef.delete() { err in
if let err = err {
print("Error removing document: \(err)")
} else {
print("Document successfully removed!")
}
}
}
}
}
}
}
}
}
} else {
itemRef.updateData([
K.Item.isChecked : false
]) { err in
if let err = err {
print("Error writing document: \(err)")
} else {
print("Document successfully written!")
}
}
}
}
}
Does it have to do with the refreshing of the cell? I'm quite lost at this point and don't know what I'm doing wrong.
If anyone could help me out that'd be absolutely great.