ios – Autolayout约束警告“将尝试通过打破约束来恢复”

发布时间：2020-12-14 19:10:56 所属栏目：百科来源：网络整理

导读：我正在尝试实施新闻提要(不知何故像没有评论或喜欢的Instagram).它工作,但 xcode继续显示此错误.我尝试改变所有约束,然而,我无法开始工作. tableview的高度为475,图像的高度为400,带有标签的白色区域为75. 我确实用过 self.tableView.estimatedRowHeight = 4

我正在尝试实施新闻提要(不知何故像没有评论或喜欢的Instagram).它工作,但 xcode继续显示此错误.我尝试改变所有约束,然而,我无法开始工作. tableview的高度为475,图像的高度为400,带有标签的白色区域为75.

我确实用过

self.tableView.estimatedRowHeight = 475;
self.tableView.rowHeight = UITableViewAutomaticDimension;

有帮助吗？

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) 
(

    "<NSLayoutConstraint:0x174096530 UIImageView:0x1743e9000.top == UITableViewCellContentView:0x17418af80.topMargin + 13>","<NSLayoutConstraint:0x1740977f0 V:[PFImageView:0x1743e8e00]-(0)-|   (Names: '|':UITableViewCellContentView:0x17418af80 )>","<NSLayoutConstraint:0x174097840 V:[UIImageView:0x1743e9000]-(24)-[PFImageView:0x1743e8e00]>","<NSLayoutConstraint:0x174097890 H:|-(0)-[PFImageView:0x1743e8e00]   (Names: '|':UITableViewCellContentView:0x17418af80 )>","<NSLayoutConstraint:0x174097930 H:[PFImageView:0x1743e8e00]-(0)-|   (Names: '|':UITableViewCellContentView:0x17418af80 )>","<NSLayoutConstraint:0x174097ac0 PFImageView:0x1743e8e00.width == PFImageView:0x1743e8e00.height>","<NSLayoutConstraint:0x174097b60 V:[UIImageView:0x1743e9000(30)]>","<NSLayoutConstraint:0x174092ed0 'UIView-Encapsulated-Layout-Width' H:[UITableViewCellContentView:0x17418af80(375)]>","<NSLayoutConstraint:0x174092f20 'UIView-Encapsulated-Layout-Height' V:[UITableViewCellContentView:0x17418af80(44)]>"
)


Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0x174097b60 V:[UIImageView:0x1743e9000(30)]>

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.

解决方法

我实际上解决了从图像约束底部更改优先级到750的问题.感谢您的帮助.

（编辑：李大同）

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