点击UITextField输出错误

输出详情

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.
(
"",
"",
""
)

Will attempt to recover by breaking constraint

Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in may also be helpful.
2016-08-01 14:18:13.647 CZY_iPad_new[3497:1093491] 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.
(
"",
"",
""
)

Will attempt to recover by breaking constraint

Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in may also be helpful.

如图

满满得一屏幕错误

BUG重现

从用户名输入框，再点到用户密码输入框（或者点击输入框的顺序反过来）

BUG分析

出现原因1、两个输入框类型不同（一个是密码框，一个不是）
出现原因2、键盘类型不同（一个是默认，一个是numberPad键盘类型）