Ios 如何将UIButton转换为圆形？

当用户点击一个

ui按钮时，我试图将其动画化为圆形。但是当我尝试这样做时，我将
ui视图的顶部设置为平面。在下面粘贴我的代码

private enum SignInButtonState {
        case clicked
        case normal
    }


private var currentSignInButtonState: SignInButtonState = .normal
private func updateSignInButton(to state: SignInButtonState) {
        switch state {
        case .clicked:
            signinButton.setTitle("", for: .normal)
            self.currentSignInButtonState = .clicked
            UIView.animate(withDuration: 0.5) {
                self.signinButton.transform = CGAffineTransform(scaleX: self.signinButton.frame.height/self.signinButton.frame.width, y: 1)
                self.signinButton.layer.cornerRadius = self.signinButton.frame.height/2
                
            }
            
        case .normal:
            signinButton.setTitle("Sign In", for: .normal)
            self.currentSignInButtonState = .normal
            UIView.animate(withDuration: 0.5) {
                self.signinButton.transform = CGAffineTransform(scaleX: 1, y: 1)
                self.signinButton.layer.cornerRadius = 5.0
                
            }
        }
    }

我还尝试添加

        self.clipsToBounds = true
        self.layer.masksToBounds = true

两者都没有帮助。尝试将形状更改为圆形时添加UIButton的图像（按钮为黄色）


更新后，我发现了您的宽度，问题正在转变中，因为它使
.cornerRadius
行为不端，尝试另一种方法可以解决问题


我可以看到您的宽度==以查看宽度

因此，我们需要创建另一个具有常量值的宽度约束
并在代码中为两者创建
IBOutlets
，并在单击时更改每个的优先级，并在更改拐角半径时更改值，请选中下面的复选框

@IBOutlet weak var secondWidthConstant: NSLayoutConstraint! // this is the constant one
@IBOutlet weak var widthOfBtn: NSLayoutConstraint! // this is the one that has == to super.view

  private func updateSignInButton(to state: SignInButtonState) {
    switch state {
    case .clicked:
        signinButton.setTitle("", for: .normal)
        self.currentSignInButtonState = .normal
        widthOfBtn.priority = UILayoutPriority(rawValue: 750) // this one is the constraint that is == to the width of the view
        secondWidthConstant.priority = UILayoutPriority(rawValue: 1000) // this is the constant value constraint
        secondWidthConstant.constant = self.signinButton.frame.height // change the constant after the priorty is set to higher than the == one
        UIView.animate(withDuration: 0.5, animations: {
            self.signinButton.layoutIfNeeded()
            self.signinButton.layer.cornerRadius = (self.signinButton.frame.height / 2)
        }) { (_) in
        }
    case .normal:
        widthOfBtn.priority = UILayoutPriority(rawValue: 1000) //switch back priorty
        secondWidthConstant.priority = UILayoutPriority(rawValue: 750) //switch back priorty
        signinButton.setTitle("Sign In", for: .normal)
        self.currentSignInButtonState = .clicked
        UIView.animate(withDuration: 0.5) {
            self.signinButton.layoutIfNeeded()
            self.signinButton.layer.cornerRadius = 5.0
        }
    }
}

你能给我们看一下
currentSignInButtonState
拐角半径
是可设置动画的属性，你不需要变换。@mohmdads它被添加到代码中，now@vpoltave我使用“变换”将宽度调低以匹配高度。要获得1:1的纵横比，请附上结果的图像，好吗？我不明白。解决方案和我发布的问题之间有什么区别？you'r flag搞错了，我也不知道你在哪里调用我从didTap上假设的这个函数button@SidharthJDev试试看，它对我来说也很好，即使你在点击后从didLoad调用它也很好。您的错误是在您的案例中将其设置为clicked（单击），在您的案例被单击时将其设置为normal（正常）normal@SidharthJDev检查视频您的代码在状态TAT的标志设置中有一个错误，与您的代码有什么不同尝试在单击时调用它