1、 [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.
(
"<NSLayoutConstraint:0x17068b630 UIButton:0x153b67fe0.right == UITableViewCellContentView:0x153b682a0.right - 2 (active)>",
"<NSLayoutConstraint:0x17068b3b0 H:|-(372)-[UIButton:0x153b67fe0](LTR) (active, names: '|':UITableViewCellContentView:0x153b682a0 )>",
"<NSLayoutConstraint:0x17068bf90 'UIView-Encapsulated-Layout-Width' UITableViewCellContentView:0x153b682a0.width == 320 (active)>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x17068b630 UIButton:0x153b67fe0.right == UITableViewCellContentView:0x153b682a0.right - 2 (active)>
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.
特别注意：
（1）打symbolic breakpoint
(2)将UIViewAlertForUnsatisfiableConstraints放入位置
这样能找到异常的准确的位置
2、用了自动布局框架purelayout 方法后newAutoLayout()，再来重新设置frame必须重新初始化，否则，无效，newAutoLayout这个方法里面关闭了frame ，这种方法实例化出来的只能用自动布局了