两个非冲突的约束创建NSLayoutConstraint错误 [英] Two non-conflicting constraints creating a NSLayoutConstraint error

问题描述

我有一个UILabel两个约束牵制的铅和尾部的上海华。

I have two constraints on a UILabel pinning the lead and the tail to the superview.

问题是，当我打开应用中的观点，我得到这个错误：

The problem is, when I open the view in the app, I get this error:

2015-04-11 22:00:24.319 TradingPost[7610:60b] 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:0x17e9da10 H:[UILabel:0x17ef3ca0]-(12)-|   (Names: '|':UITableViewCellContentView:0x17eaceb0 )>",
"<NSLayoutConstraint:0x17e9da40 H:|-(88)-[UILabel:0x17ef3ca0]   (Names: '|':UITableViewCellContentView:0x17eaceb0 )>",
"<NSAutoresizingMaskLayoutConstraint:0x17eb1b00 h=--& v=--& H:[UITableViewCellContentView:0x17eaceb0(0)]>"
)

Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0x17e9da10 H:[UILabel:0x17ef3ca0]-(12)-|   (Names: '|':UITableViewCellContentView:0x17eaceb0 )>

然后，它前进到充当如果所有的约束用预期功能的工作。

It then proceeds to function as if all of the constraints were working with intended functionality.

下面是我的约束清晰的截图：

Here's a screenshot of my constraints for clarity:

推荐答案

我居兴你正在使用一个UITableView和创建自定义单元格。结果
创建的UITableViewCell的子类，这个类分配给您的自定义单元格并覆盖 awakeFromNib 如下：

I am gussing you are using a UITableView and creating a custom cell.
Create a subclass of UITableViewCell, assign that class to your custom cell and overwrite the awakeFromNib as follows:

- (void)awakeFromNib {
    [super awakeFromNib];
    self.contentView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
}

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