We are going to take a slightly different approach to this problem. Our label is only a point of reference for where we want to add a boundary that will stop our food image view. Because of this, the label does not need to be associated with any UIKit Dynamic behaviors. Remove
self.foodDateLabel from the following code:
collision = [[UICollisionBehavior alloc] initWithItems:@[self.foodImageView, self.foodDateLabel]];
Instead, add the following code to the bottom of
viewDidLoad but before we add our collision behavior to the animator:
// Add a boundary to the top edge CGPoint topEdge = CGPointMake(self.foodDateLabel.frame.origin.x + self.foodDateLabel.frame.size.width, self.foodDateLabel.frame.origin.y); [collision addBoundaryWithIdentifier:@"barrier" fromPoint:self.foodDateLabel.frame.origin toPoint:topEdge];
Here we add a boundary to the collision behavior and pass some parameters. First we define an identifier, which we will use later, and then we pass the food...