iOS 5 - 有没有办法在UITextView中禁用自动填充但是保持拼写检查(红色下划线)？

class YourViewController: UIViewController, UITextViewDelegate {
    // ...
}

override func viewDidLoad() {
    super.viewDidLoad()
    yourTextView.delegate = self
}

func textView(_ textView: UITextView, shouldChangeTextIn range: NSRange, replacementText text: String) -> Bool {
    if text == "\n" {
        textView.resignFirstResponder()
        return false
    }
    return true
}

yourTextView.spellCheckingType = .yes