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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
}
}
一旦我運行此,我whiteBoxSelector
移動到朋友按鈕,但只在y軸和x位置似乎是0.我沒有設置任何約束的白盒和我的按鈕都在一個堆棧視圖。爲什麼.center只能在y軸上爲我工作?