自动布局问题 Xcode 8 [_SwiftValue nsli_superitem] [英] Autolayout issue Xcode 8 [_SwiftValue nsli_superitem]

问题描述

将我的代码转换为 Swift 3 我发现了一个奇怪的问题.现在(2016 年 9 月 15 日)Xcode 8(公共版)已发布，在转换代码后，我的应用程序无缘无故崩溃.

Converting my code to Swift 3 I found a weird issue. Right now (15th September 2016) Xcode 8 (public version) is out, and after converting the code, my App crashes without an apparently reason.

自动布局有问题，日志显示如下:

There is something wrong with Auto Layout and the log says something like:

[_SwiftValue nsli_superitem]: unrecognized selector sent to instance 

我该如何解决?谢谢

推荐答案

刚刚想出了一个奇怪但有效的解决方案:

Just figured out the weird but working solution:

而不是这样做:

let views = ["view":aView]
view.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "...", options:[], metrics: metrics, views: views))

明确声明字典:

let views: [String:UIView] = ["view":aView]
view.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "...", options:[], metrics: metrics, views: views))

我知道，这很奇怪，但确实有效.干杯

I know, it's weird but it works. Cheers

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