当输入语言为 RTL/Arabic 时，如何防止 UITextfield 更改对齐方式？

Question

应用语言为英语，左图显示UITextfield的内容左对齐..这是正常的，但是当用户选择RTL/Arabic输入语言时，字段对齐方式自动翻转，如何强制保留对齐方式而不考虑输入语言方向？

编辑：

我试过了，没有解决问题

    let _beginningOfDocument = fieldPassword!.beginningOfDocument
    let _endOfDocument = fieldPassword!.endOfDocument

    fieldPassword!.setBaseWritingDirection(.leftToRight, for: fieldPassword!.textRange(from: _beginningOfDocument , to: _endOfDocument )! )

Answer 1

在您的应用委托中，添加：

if #available(iOS 9.0, *) { UIView.appearance().semanticContentAttribute = .forceLeftToRight }

Answer 2

结果是我使用的某些库导致了这种效果，它是 MOLH 库，它使用方法调配，这就是为什么很难调试的原因...

我将很快向它发出拉取请求，使这个效果成为可选的...

func listenToKeyboard() {
    NotificationCenter.default.removeObserver(self, name: UITextInputMode.currentInputModeDidChangeNotification, object: nil)
    NotificationCenter.default.addObserver(self, selector: #selector(inputModeDidChange), name: UITextInputMode.currentInputModeDidChangeNotification, object: nil)
}

@objc func inputModeDidChange(_ notification: Notification) {
    if let language = self.textInputMode?.primaryLanguage, MOLHLanguage.isRTLLanguage(language: language) {
        self.textAlignment = .right
    } else {
        self.textAlignment = .left
    }
}

谢谢。

Answer 3

在Swift 4

textField.semanticContentAttribute = UISemanticContentAttribute.forceLeftToRight

Answer 4

老实说，我尝试了所有这些，但对我不起作用，因为它与视图层次结构有关。欲了解更多信息，您可以阅读此note

Note iOS applies appearance changes when a view enters a window, it doesn’t change the appearance of a view that’s already in a window. To change the appearance of a view that’s currently in a window, remove the view from the view hierarchy and then put it back.

所以试试这个，它对我有用：

extension UITextField {
   open override func awakeFromNib() {
    super.awakeFromNib()
    if Utilities.getCurrentLanguage() == "ar" {
        if textAlignment == .natural {
            self.textAlignment = .right
        }
      }
   }
 }

对了，"Utilities.getCurrentLanguage()"是获取当前语言的函数

当输入语言为 RTL/Arabic 时，如何防止 UITextfield 更改对齐方式？

how to prevent UITextfield from changing alignment when input language is RTL/Arabic?

ios

swift

uitextfield

arabic

right-to-left