textfield 英文键盘状态下切换中文键盘，控制台有打印，遇到的举手，知道怎么解决的也举手
2016-07-29 10:01
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Unable to simultaneously satisfy constraints.
Probably at least one of the c
4000
onstraints 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:0x7ff02be814c0 H:[_UIButtonBarStackView:0x7ff02e09af40(<=0)]>",
"<NSLayoutConstraint:0x7ff02bc153e0 'UIView-leftMargin-guide-constraint' H:|-(15)-[UILayoutGuide:0x7ff02bcac140'UIViewLayoutMarginsGuide'](LTR) (Names: '|':_UIButtonBarStackView:0x7ff02e09af40 )>",
"<NSLayoutConstraint:0x7ff02bc15990 'UIView-rightMargin-guide-constraint' H:[UILayoutGuide:0x7ff02bcac140'UIViewLayoutMarginsGuide']-(15)-|(LTR) (Names: '|':_UIButtonBarStackView:0x7ff02e09af40 )>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x7ff02bc15990 'UIView-rightMargin-guide-constraint' H:[UILayoutGuide:0x7ff02bcac140'UIViewLayoutMarginsGuide']-(15)-|(LTR) (Names: '|':_UIButtonBarStackView:0x7ff02e09af40 )>
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.
以上是打印的
Probably at least one of the c
4000
onstraints 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:0x7ff02be814c0 H:[_UIButtonBarStackView:0x7ff02e09af40(<=0)]>",
"<NSLayoutConstraint:0x7ff02bc153e0 'UIView-leftMargin-guide-constraint' H:|-(15)-[UILayoutGuide:0x7ff02bcac140'UIViewLayoutMarginsGuide'](LTR) (Names: '|':_UIButtonBarStackView:0x7ff02e09af40 )>",
"<NSLayoutConstraint:0x7ff02bc15990 'UIView-rightMargin-guide-constraint' H:[UILayoutGuide:0x7ff02bcac140'UIViewLayoutMarginsGuide']-(15)-|(LTR) (Names: '|':_UIButtonBarStackView:0x7ff02e09af40 )>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x7ff02bc15990 'UIView-rightMargin-guide-constraint' H:[UILayoutGuide:0x7ff02bcac140'UIViewLayoutMarginsGuide']-(15)-|(LTR) (Names: '|':_UIButtonBarStackView:0x7ff02e09af40 )>
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.
以上是打印的
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