2

所以我正在快速开发一个 tvos 应用程序,我想知道是否可以禁用对自定义 UITextField 的听写支持。它并不能很好地工作,我不希望用户能够这样做

4

2 回答 2

0

您是否尝试使用文本字段的键盘类型属性?也许您可以更改文本输入类型,因此听写功能自动不显示。

文档:https ://developer.apple.com/library/tvos/documentation/UIKit/Reference/UITextInputTraits_Protocol/index.html#//apple_ref/occ/intfp/UITextInputTraits/keyboardType

于 2016-05-27T14:48:52.507 回答
0

这是基于@BadPirate's hack的 Swift 4 解决方案。它将触发初始铃声,表明听写开始,但听写布局永远不会出现在键盘上。

这不会隐藏键盘上的听写按钮:因为唯一的选择似乎是使用带有UIKeyboardType.emailAddress的电子邮件布局。


viewDidLoad拥有UITextField要禁用听写的视图控制器中:

// Track if the keyboard mode changed to discard dictation
NotificationCenter.default.addObserver(self,
                                       selector: #selector(keyboardModeChanged),
                                       name: UITextInputMode.currentInputModeDidChangeNotification,
                                       object: nil)

然后自定义回调:

@objc func keyboardModeChanged(notification: Notification) {
    // Could use `Selector("identifier")` instead for idSelector but
    // it would trigger a warning advising to use #selector instead
    let idSelector = #selector(getter: UILayoutGuide.identifier)

    // Check if the text input mode is dictation
    guard
        let textField = yourTextField as? UITextField
        let mode = textField.textInputMode,
        mode.responds(to: idSelector),
        let id = mode.perform(idSelector)?.takeUnretainedValue() as? String,
        id.contains("dictation") else {
            return
    }

    // If the keyboard is in dictation mode, hide
    // then show the keyboard without animations
    // to display the initial generic keyboard
    UIView.setAnimationsEnabled(false)
    textField.resignFirstResponder()
    textField.becomeFirstResponder()
    UIView.setAnimationsEnabled(true)

    // Do additional update here to inform your
    // user that dictation is disabled
}
于 2018-11-20T18:46:33.870 回答