Swift animation doesn't update during while loop - swift

Question

I am new to Swift. I am trying to animate an object within a while loop, but the screen doesn't update until after the while loop is completed. If I run the function that the while loop is in by repeatedly clicking a button, it does work, but I want it run on its own. I have tried loading the screen every loop, but it didn't work.
func moveBall() {
while loopnumb <= 100 {
loopnumb += 1
print("animation loop cycled \(loopnumb) times")
print("inside of moveball() before startanimation, scratchX is \(scratchX), scratchY is \(scratchY), and the direction is \(direction).")
let animator = UIViewPropertyAnimator(duration: 0.5, curve: .linear) {
self.direckEffeck()
self.scratch.frame = CGRect(x: self.scratchX, y: self.scratchY, width: 240, height: 128)
print("after and inside of animation command, scratchX is \(self.scratchX), scratchY is \(self.scratchY), and the direction is \(self.direction).")
}
animator.startAnimation()
if checkForOOBX() == true && checkForOOBY() == false {
direckCheckX()
}
if checkForOOBY() == true && checkForOOBX() == false {
direckCheckY()
}
if checkForOOBX() == true && checkForOOBY() == true {
if direction == 0 && done == false {
direction = 2
done = true
}
if direction == 1 && done == false {
direction = 3
done = true
}
if direction == 2 && done == false {
direction = 0
done = true
}
if direction == 3 && done == false {
direction = 1
done = true
}
cornerTouches += 1
print("ebic win, gamer's! the amount of corner touches is \(cornerTouches)")
}
done = false
DispatchQueue.main.async() {
self.scratch.setNeedsDisplay()
}
}
loopnumb = 0
}
Note that the object I am trying to move is called "scratch", and its coordinates are scratchX, scratchY. Thank you in advance.