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class ViewController: UIViewController {
@IBOutlet var friendsButton: UIImageView! //Friends Button
@IBOutlet var circleButton: UIImageView! //Circle Button
@IBOutlet var profileButton: UIImageView! //Profile Button
@IBOutlet var whiteBoxSelector: UIImageView! //White Box Selector
override func viewDidLayoutSubviews() {
whiteBoxSelector.center = self.friendsButton.center //line that doesn't seem to run properly
}
}
一旦我运行此,我whiteBoxSelector
移动到朋友按钮,但只在y轴和x位置似乎是0.我没有设置任何约束的白盒和我的按钮都在一个堆栈视图。为什么.center只能在y轴上为我工作?