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Я имею установку взгляды со следующими ограничениями:Constraint Ошибка при перемещении parentView
bottomContainerViewConstraint = NSLayoutConstraint(item: containerView, attribute: .Bottom, relatedBy: .Equal, toItem: self.view, attribute: .Bottom, multiplier: 1, constant: -10)
self.view.addConstraint(bottomContainerViewConstraint!)
topContainerViewConstraint = NSLayoutConstraint(item: containerView, attribute: .Leading, relatedBy: .Equal, toItem: self.view, attribute: .Leading, multiplier: 1, constant: 10)
self.view.addConstraint(topContainerViewConstraint!)
self.view.addConstraint(NSLayoutConstraint(item: containerView, attribute: .Trailing, relatedBy: .Equal, toItem: self.view, attribute: .Trailing, multiplier: 1, constant: -10))
self.view.addConstraint(NSLayoutConstraint(item: containerView, attribute: .Top, relatedBy: .Equal, toItem: self.view, attribute: .Bottom, multiplier: 1, constant: -120))
//caption and profilepic constraints
self.view.addConstraint(NSLayoutConstraint(item: captionAndProfileImageContainerView, attribute: .Top, relatedBy: .Equal, toItem: containerView, attribute: .Top, multiplier: 1, constant: 0))
self.view.addConstraint(NSLayoutConstraint(item: captionAndProfileImageContainerView, attribute: .Leading, relatedBy: .Equal, toItem: containerView, attribute: .Leading, multiplier: 1, constant: 0))
self.view.addConstraint(NSLayoutConstraint(item: captionAndProfileImageContainerView, attribute: .Trailing, relatedBy: .Equal, toItem: containerView, attribute: .Trailing, multiplier: 1, constant: -110))
self.view.addConstraint(NSLayoutConstraint(item: captionAndProfileImageContainerView, attribute: .Bottom, relatedBy: .Equal, toItem: containerView, attribute: .Bottom, multiplier: 1, constant: 0))
self.view.addConstraintsWithFormat("H:|-8-[v0(50)]", views: profilePicImageView)
self.view.addConstraintsWithFormat("V:|-30-[v0(50)]", views: profilePicImageView)
profilePicImageView.layer.cornerRadius = 25
profilePicImageView.layer.masksToBounds = true
self.view.addConstraint(NSLayoutConstraint(item: captionTextView, attribute: .Top, relatedBy: .Equal, toItem: captionAndProfileImageContainerView, attribute: .Top, multiplier: 1, constant: 0))
self.view.addConstraint(NSLayoutConstraint(item: captionTextView, attribute: .Leading, relatedBy: .Equal, toItem: profilePicImageView, attribute: .Trailing, multiplier: 1, constant: 8))
self.view.addConstraint(NSLayoutConstraint(item: captionTextView, attribute: .Trailing, relatedBy: .Equal, toItem: captionAndProfileImageContainerView, attribute: .Trailing, multiplier: 1, constant: 0))
self.view.addConstraint(NSLayoutConstraint(item: captionTextView, attribute: .Bottom, relatedBy: .Equal, toItem: captionAndProfileImageContainerView, attribute: .Bottom, multiplier: 1, constant: 0))
//likes and comments and divider
self.view.addConstraint(NSLayoutConstraint(item: commentAndLikesContainerView, attribute: .Top, relatedBy: .Equal, toItem: containerView, attribute: .Top, multiplier: 1, constant: 0))
self.view.addConstraint(NSLayoutConstraint(item: commentAndLikesContainerView, attribute: .Leading, relatedBy: .Equal, toItem: captionAndProfileImageContainerView, attribute: .Trailing, multiplier: 1, constant: 0))
self.view.addConstraint(NSLayoutConstraint(item: commentAndLikesContainerView, attribute: .Trailing, relatedBy: .Equal, toItem: containerView, attribute: .Trailing, multiplier: 1, constant: 0))
self.view.addConstraint(NSLayoutConstraint(item: commentAndLikesContainerView, attribute: .Bottom, relatedBy: .Equal, toItem: containerView, attribute: .Bottom, multiplier: 1, constant: 0))
self.view.addConstraint(NSLayoutConstraint(item: voteUpButton, attribute: .Top, relatedBy: .Equal, toItem: commentAndLikesContainerView, attribute: .Top, multiplier: 1, constant: 0))
self.view.addConstraint(NSLayoutConstraint(item: voteUpButton, attribute: .Leading, relatedBy: .Equal, toItem: commentButton, attribute: .Trailing, multiplier: 1, constant: 0))
self.view.addConstraint(NSLayoutConstraint(item: likesLabel, attribute: .Top, relatedBy: .Equal, toItem: voteUpButton, attribute: .Bottom, multiplier: 1, constant: -5.5))
self.view.addConstraint(NSLayoutConstraint(item: likesLabel, attribute: .Leading, relatedBy: .Equal, toItem: voteUpButton, attribute: .Leading, multiplier: 1, constant: 11.5))
self.view.addConstraint(NSLayoutConstraint(item: voteDownButton, attribute: .Top, relatedBy: .Equal, toItem: likesLabel, attribute: .Bottom, multiplier: 1, constant: 0))
self.view.addConstraint(NSLayoutConstraint(item: voteDownButton, attribute: .Leading, relatedBy: .Equal, toItem: likesLabel, attribute: .Leading, multiplier: 1, constant: -11.5))
self.view.addConstraint(NSLayoutConstraint(item: commentButton, attribute: .Top, relatedBy: .Equal, toItem: commentAndLikesContainerView, attribute: .Top, multiplier: 1, constant: 37))
self.view.addConstraint(NSLayoutConstraint(item: commentButton, attribute: .Leading, relatedBy: .Equal, toItem: commentAndLikesContainerView, attribute: .Leading, multiplier: 1, constant: 10))
self.view.addConstraint(NSLayoutConstraint(item: commentLabel, attribute: .Top, relatedBy: .Equal, toItem: commentButton, attribute: .Top, multiplier: 1, constant: 7.5))
self.view.addConstraint(NSLayoutConstraint(item: commentLabel, attribute: .Leading, relatedBy: .Equal, toItem: commentButton, attribute: .Leading, multiplier: 1, constant: 12.5))
Теперь я пытаюсь изменить bottomContainerViewConstraint и topContainerViewConstraint и переместить позицию containerView в верхней части экрана, используя этот код:
func moveViewFromBottomToTop(viewToBeMoved : UIView, bottomConstraint : NSLayoutConstraint, topConstraint : NSLayoutConstraint, completionHandler: (loaded: Bool, dataNil: Bool) ->()) ->() {
if (topConstraint.constant > (-self.view.frame.height)) {
topConstraint.constant = -self.view.frame.height
bottomConstraint.constant = -self.view.frame.height + 120
UIView.animateWithDuration(0.5, delay: 0, options: UIViewAnimationOptions.CurveEaseOut, animations: {
self.view.layoutIfNeeded()
}, completion: { (completed) in
})
}
}
Все другие взгляды, упомянутые в коде, являются подлогими контейнераView. Я получаю следующие ошибки:
2016-06-16 23:35:33.282 City[18312:474417] Unable to simultaneously satisfy constraints.
Probably at least one of the constraints in the following list is one you don't want.
Try this:
(1) look at each constraint and try to figure out which you don't expect;
(2) find the code that added the unwanted constraint or constraints and fix it.
(
"<NSLayoutConstraint:0x7f95e1577e30 UIView:0x7f95e1566670.bottom == UIView:0x7f95e161a710.bottom - 547>",
"<NSLayoutConstraint:0x7f95e159eb40 UIView:0x7f95e1566670.top == UIView:0x7f95e161a710.bottom - 120>",
"<NSLayoutConstraint:0x7f95e15c1160 UIView:0x7f95e15667e0.top == UIView:0x7f95e1566670.top>",
"<NSLayoutConstraint:0x7f95e1502ed0 UIView:0x7f95e15667e0.bottom == UIView:0x7f95e1566670.bottom>",
"<NSLayoutConstraint:0x7f95e15163b0 UITextView:0x7f95e2107c00.top == UIView:0x7f95e15667e0.top>",
"<NSLayoutConstraint:0x7f95e1552b50 UITextView:0x7f95e2107c00.bottom == UIView:0x7f95e15667e0.bottom>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x7f95e159eb40 UIView:0x7f95e1566670.top == UIView:0x7f95e161a710.bottom - 120>
Я не понимаю, почему это проблема. Должны ли эти ограничения просто настраиваться автоматически, так как все они являются подзонами контейнераView, и все ограничения относятся к контейнеру?