cornerRadius停止在Swift 2.3/iOS 10/Xcode 8中工作 [英] cornerRadius stopped working in Swift 2.3 / iOS 10 / Xcode 8

问题描述

我在同一UIView中的UIView和UIImageView上分别设置了cornerRadius.我正在使用RockProfileView.frame.size.height / 2计算拐角半径，但是UIView在iOS 10中停止显示.

I have a cornerRadius set on a UIView and a UIImageView inside the same UIView. I am calculating the corner radius with RockProfileView.frame.size.height / 2 but the UIView stopped showing in iOS 10.

进一步检查后，我发现RockProfileView.frame.size.height / 2的值是1000.0，而宽度和高度约束设置为64.0

After further checking i found the value of RockProfileView.frame.size.height / 2 is coming out to be 1000.0 while the width and height constraint is set to 64.0

当我将RockProfileView.layer.cornerRadius = 32硬编码为64/2时，它可以正常工作.

When I hardcoded the RockProfileView.layer.cornerRadius = 32 to 64/2 it works just fine.

可能是什么问题?

完整代码:

    RockProfileView.layer.cornerRadius = RockProfileView.frame.size.height / 2
    RockProfileView.clipsToBounds = true
    RockProgressView.layer.masksToBounds = true

推荐答案

罗布(Rob)回答，我已经将代码从viewDidLoad移到了viewDidAppear，问题已得到解决.

As answered by Rob, I've moved the code from viewDidLoad to viewDidAppear and the problem is fixed.

或 在viewDidLoad中的代码之前添加self.view.layoutIfNeeded()也可以解决此问题.

OR Adding self.view.layoutIfNeeded() before your code in viewDidLoad also solves the issue.

对于UITableViewCell，在更新拐角半径之前在内部awakeFromNib中添加[self layoutIfNeeded];应该可以解决所有问题.

In case of UITableViewCell, Inside awakeFromNib add [self layoutIfNeeded]; before updating the corner radius should solve all the issues.

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