2017-05-09 10:30:51.969437+0800 [35586:2135000] [LayoutConstraints] 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.
(
"<MASLayoutConstraint:0x6080008a80a0 TextView:0x7f923e015000.height == 0>",
"<MASLayoutConstraint:0x6080002a9a20 TextView:0x7f923e015000.height == 95>"
)
Will attempt to recover by breaking constraint
<MASLayoutConstraint:0x6080002a9a20 TextView:0x7f923e015000.height == 95>
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.
由于使用的
mas_makeConstraints这个造成切换布局错误，建议使用
mas_updateConstraints，就行