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  • Unable to simultaneously satisfy constraints.

    开发版本  7.0 

    @property(nonatomic) BOOL translatesAutoresizingMaskIntoConstraints NS_AVAILABLE_IOS(6_0); // Default YES

    此属性 6.0 版本

    错误提示:

     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) 
    (
        "<NSAutoresizingMaskLayoutConstraint:0x7ffd30d86570 h=--& v=--& H:[UIView:0x7ffd30f33d50(640)]>",
        "<NSLayoutConstraint:0x7ffd33065d20 H:[UIImageView:0x7ffd30f341c0]-(0)-|   (Names: '|':UIView:0x7ffd30f34030 )>",
        "<NSLayoutConstraint:0x7ffd30eaa760 H:|-(0)-[UIImageView:0x7ffd30f341c0]   (Names: '|':UIView:0x7ffd30f34030 )>",
        "<NSLayoutConstraint:0x7ffd330bf740 UIView:0x7ffd30f33d50.width == 2*UIImageView:0x7ffd30f341c0.width>",
        "<NSLayoutConstraint:0x7ffd30d944d0 'UIView-Encapsulated-Layout-Width' H:[UIView:0x7ffd30f34030(375)]>"
    )
    
    Will attempt to recover by breaking constraint 
    <NSLayoutConstraint:0x7ffd33065d20 H:[UIImageView:0x7ffd30f341c0]-(0)-|   (Names: '|':UIView:0x7ffd30f34030 )>
    
    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.
    

     解决办法:

    出错的View . translatesAutoresizingMaskIntoConstraints = NO ;即可解决

    无意之中发现只要设置xib 中的size 为任意的iphone 尺寸也能解决上面的问题, 不能死inferred!!!

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  • 原文地址:https://www.cnblogs.com/fleas/p/5717760.html
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