In addition to UIKit Dynamics, we can also use
UIMotionEffects to adjust the user interface when a device is tilted horizontally.
UIMotionEffects is an abstract class that works best when subclassed. Apple has already made a subclass of
UIMotionEffects that will cover almost all use cases of motion in your apps. This subclass is the
UIInterpolatingMotionEffect instance is initialized with a key path and a type. The type is what defines vertical and horizontal motions. The class will automatically set the key value path based on the device's movements.
viewDidLoad method, add the following code at the bottom:
UIInterpolatingMotionEffect *horizontalMotionEffect = [[UIInterpolatingMotionEffect alloc] initWithKeyPath:@"center.x" type:UIInterpolatingMotionEffectTypeTiltAlongHorizontalAxis]; horizontalMotionEffect.minimumRelativeValue = @(-30); horizontalMotionEffect.maximumRelativeValue = @(30); [self.foodImageView addMotionEffect...