ios - UITextField leftView 和 rightView 重叠问题 - iOS13

Question

这类似于 UITextField rightView overlaps right align text 但我很难理解如何解决这个问题:

重叠发生在 ios 13.1 上 我设置 borderStyle = .none 如果存在边框，则文本不会与 图片。

    public func addRightImage(_ image: UIImage, accessibilityIdentifier: String? = nil,
                              size: CGSize) {
        self.rightViewMode = .always
        let widthImageView : CGFloat = 25

        let rightImageView = UIImageView(frame: .init(x: 0, y: 0, width: widthImageView, height: self.bounds.size.height))
        rightImageView.accessibilityIdentifier = accessibilityIdentifier
        rightImageView.image = image
        if #available(iOS 13, *) {
            self.rightView = rightImageView
        } else {
            assert(self.rightImageView == nil)
            let widthView : CGFloat = is4incher ? 30 : 50

            let rightView = UIView(frame: .init(x: 0, y: 0, width: widthView, height: self.bounds.size.height))
                       rightView.isUserInteractionEnabled = false
                        self.rightView = rightView
            rightView.addSubview(rightImageView)

            rightView.isUserInteractionEnabled = false
            self.rightView = rightView

            rightImageView.anchors(centerX: rightView.centerXAnchor, centerY: rightView.centerYAnchor,
                                   size: size)
        }
        rightImageView.set(color: self.textColor ?? .white)
        rightImageView.contentMode = .scaleAspectFit
        self.rightImageView = rightImageView
    }

如果我摆脱了

    if #available(iOS 13, *) {
        self.rightView = rightImageView

然后进入 ios12 路径，图像居中于 UITextField 和文本完全消失了:

我可以做些什么来修复我的代码，或者如果我的代码看起来没问题，我是否需要向 apple 提交错误？

Answer 1

Swift 5 - iOS13

Prior to iOS 13, UITextField assumed that the frames of its leftView and rightView were correctly set when assigned and would never change.

从 iOS 13 开始，leftViewRect(forBounds:) 和 rightViewRect(forBounds:) 的实现现在向 View 询问其 systemLayoutSizeFitting(_:) 。

要在针对 iOS 13 链接和运行时实现之前的行为，请在 View 上添加显式大小限制，将其包装在普通 UIView 中，或者将 View 子类化并实现 systemLayoutSizeFitting(_:)

---

textField 类中的方法覆盖

override func rightViewRect(forBounds bounds: CGRect) -> CGRect {
    return CGRect(x: bounds.width - 50, y: 0, width: 30 , height: bounds.height)
    }

引用链接- https://howtotechglitz.com/apple-has-just-released-ios-13-developer-beta-5-for-iphone-ios-iphone-gadget-hacks/

希望对你有所帮助。