My project setting supports both portrait and landscape orientation. However, I only want one presented view controller (say view controller A) to be able to rotate. I use
override func shouldAutorotate() -> Bool {
return false
}
override func supportedInterfaceOrientations() -> Int {
return Int(UIInterfaceOrientationMask.Portrait.rawValue)
}
to disable rotation in other view controllers. It works. However, when A is presented modally and rotated, the presenting view controller (say view controller B) reports:
2015-08-03 23:34:06.000 Adjimu[4161:181458] 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. (Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints)
(
"<NSLayoutConstraint:0x7ff055858cd0 V:[UIView:0x7ff055858aa0(1)]>",
"<NSLayoutConstraint:0x7ff055856610 UIScrollView:0x7ff055855e20.width == 1.77778*UIScrollView:0x7ff055855e20.height>",
"<NSLayoutConstraint:0x7ff05585a180 H:|-(0)-[UIScrollView:0x7ff055855e20] (Names: '|':UIView:0x7ff055858970 )>",
"<NSLayoutConstraint:0x7ff05585a1d0 V:|-(0)-[UIScrollView:0x7ff055855e20] (Names: '|':UIView:0x7ff055858970 )>",
"<NSLayoutConstraint:0x7ff05585a220 H:[UIScrollView:0x7ff055855e20]-(0)-| (Names: '|':UIView:0x7ff055858970 )>",
"<NSLayoutConstraint:0x7ff05585a310 V:[UIScrollView:0x7ff055855e20]-(10)-[UILabel:0x7ff05584ea40'Every Child Needs a Famil...']>",
"<NSLayoutConstraint:0x7ff05585a400 V:[UILabel:0x7ff05584ea40'Every Child Needs a Famil...']-(5)-[UIButton:0x7ff055846200]>",
"<NSLayoutConstraint:0x7ff05585a720 V:[UIButton:0x7ff055846200]-(5)-[UIView:0x7ff055858aa0]>",
"<NSLayoutConstraint:0x7ff05585a810 V:[UIView:0x7ff055858aa0]-(0)-[UITableView:0x7ff05603c800]>",
"<NSLayoutConstraint:0x7ff05585a860 V:[UITableView:0x7ff05603c800]-(0)-[_UILayoutGuide:0x7ff0558599f0]>",
"<_UILayoutSupportConstraint:0x7ff053dc5570 V:[_UILayoutGuide:0x7ff0558599f0(0)]>",
"<_UILayoutSupportConstraint:0x7ff053db64f0 _UILayoutGuide:0x7ff0558599f0.bottom == UIView:0x7ff055858970.bottom>",
"<NSLayoutConstraint:0x7ff05585eac0 'UIView-Encapsulated-Layout-Width' H:[UIView:0x7ff055858970(667)]>",
"<NSLayoutConstraint:0x7ff05585eb10 'UIView-Encapsulated-Layout-Height' V:[UIView:0x7ff055858970(262)]>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x7ff055858cd0 V:[UIView:0x7ff055858aa0(1)]>
Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.
2015-08-03 23:34:06.002 Adjimu[4161:181458] 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. (Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints)
(
"<NSLayoutConstraint:0x7ff055856610 UIScrollView:0x7ff055855e20.width == 1.77778*UIScrollView:0x7ff055855e20.height>",
"<NSLayoutConstraint:0x7ff05585a180 H:|-(0)-[UIScrollView:0x7ff055855e20] (Names: '|':UIView:0x7ff055858970 )>",
"<NSLayoutConstraint:0x7ff05585a1d0 V:|-(0)-[UIScrollView:0x7ff055855e20] (Names: '|':UIView:0x7ff055858970 )>",
"<NSLayoutConstraint:0x7ff05585a220 H:[UIScrollView:0x7ff055855e20]-(0)-| (Names: '|':UIView:0x7ff055858970 )>",
"<NSLayoutConstraint:0x7ff05585a310 V:[UIScrollView:0x7ff055855e20]-(10)-[UILabel:0x7ff05584ea40'Every Child Needs a Famil...']>",
"<NSLayoutConstraint:0x7ff05585a400 V:[UILabel:0x7ff05584ea40'Every Child Needs a Famil...']-(5)-[UIButton:0x7ff055846200]>",
"<NSLayoutConstraint:0x7ff05585a720 V:[UIButton:0x7ff055846200]-(5)-[UIView:0x7ff055858aa0]>",
"<NSLayoutConstraint:0x7ff05585a810 V:[UIView:0x7ff055858aa0]-(0)-[UITableView:0x7ff05603c800]>",
"<NSLayoutConstraint:0x7ff05585a860 V:[UITableView:0x7ff05603c800]-(0)-[_UILayoutGuide:0x7ff0558599f0]>",
"<_UILayoutSupportConstraint:0x7ff053dc5570 V:[_UILayoutGuide:0x7ff0558599f0(0)]>",
"<_UILayoutSupportConstraint:0x7ff053db64f0 _UILayoutGuide:0x7ff0558599f0.bottom == UIView:0x7ff055858970.bottom>",
"<NSLayoutConstraint:0x7ff05585eac0 'UIView-Encapsulated-Layout-Width' H:[UIView:0x7ff055858970(667)]>",
"<NSLayoutConstraint:0x7ff05585eb10 'UIView-Encapsulated-Layout-Height' V:[UIView:0x7ff055858970(262)]>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x7ff055856610 UIScrollView:0x7ff055855e20.width == 1.77778*UIScrollView:0x7ff055855e20.height>
Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.
I use auto layout in B and I don't want it to be rotated. I did some experiments and these constraint errors are exactly the same errors as when it was rotated. I suspect that B is rotated as well although it is invisible.
I was haunted by this problem for a few days. I really want to know why this happened and how to solve this problem?
