关于iPhone：以编程方式更改UITextField键盘类型

Programmatically change UITextField Keyboard type

是否可以通过编程方式更改uitextfield的键盘类型，以使类似这样的操作成为可能：

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if(user is prompted for numeric input only)
[textField setKeyboardType: @"Number Pad"];

if(user is prompted for alphanumeric input)
[textField setKeyboardType: @"Default"];

相关讨论

是的，您可以，例如：

1	[textField setKeyboardType:UIKeyboardTypeNumberPad];

1	textFieldView.keyboardType = UIKeyboardType.PhonePad

这是为了迅速。同样，为了使其正常运行，必须在textFieldView.delegate = self之后进行设置

使文本字段仅接受字母数字设置此属性

1	textField.keyboardType = UIKeyboardTypeNamePhonePad;

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_textField .keyboardType = UIKeyboardTypeAlphabet;
_textField .keyboardType = UIKeyboardTypeASCIICapable;
_textField .keyboardType = UIKeyboardTypeDecimalPad;
_textField .keyboardType = UIKeyboardTypeDefault;
_textField .keyboardType = UIKeyboardTypeEmailAddress;
_textField .keyboardType = UIKeyboardTypeNamePhonePad;
_textField .keyboardType = UIKeyboardTypeNumberPad;
_textField .keyboardType = UIKeyboardTypeNumbersAndPunctuation;
_textField .keyboardType = UIKeyboardTypePhonePad;
_textField .keyboardType = UIKeyboardTypeTwitter;
_textField .keyboardType = UIKeyboardTypeURL;
_textField .keyboardType = UIKeyboardTypeWebSearch;

斯威夫特4

如果要在满足条件时尝试更改键盘类型，请遵循此步骤。例如：如果要在文本字段的计数为4或5时将键盘类型从"默认"更改为"数字键盘"，请执行以下操作：

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textField.addTarget(self, action: #selector(handleTextChange), for: .editingChanged)

@objc func handleTextChange(_ textChange: UITextField) {
if textField.text?.count == 4 || textField.text?.count == 5 {
textField.keyboardType = .numberPad
textField.reloadInputViews() // need to reload the input view for this to work
} else {
textField.keyboardType = .default
textField.reloadInputViews()
}

有一个名为keyboardType的属性。
您要做的是将字符串@"Number Pad和@"Default替换为UIKeyboardTypeNumberPad和UIKeyboardTypeDefault。

您的新代码应如下所示：

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if(user is prompted for numeric input only)
[textField setKeyboardType:UIKeyboardTypeNumberPad];

else if(user is prompted for alphanumeric input)
[textField setKeyboardType:UIKeyboardTypeDefault];

祝好运！

这是Swift 3的UIKeyboardTypes：

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public enum UIKeyboardType : Int {

case `default` // Default type for the current input method.
case asciiCapable // Displays a keyboard which can enter ASCII characters
case numbersAndPunctuation // Numbers and assorted punctuation.
case URL // A type optimized for URL entry (shows . / .com prominently).
case numberPad // A number pad with locale-appropriate digits (0-9, ?-?, ?-?, etc.). Suitable for PIN entry.
case phonePad // A phone pad (1-9, *, 0, #, with letters under the numbers).
case namePhonePad // A type optimized for entering a person's name or phone number.
case emailAddress // A type optimized for multiple email address entry (shows space @ . prominently).

@available(iOS 4.1, *)
case decimalPad // A number pad with a decimal point.

@available(iOS 5.0, *)
case twitter // A type optimized for twitter text entry (easy access to @ #)

@available(iOS 7.0, *)
case webSearch // A default keyboard type with URL-oriented addition (shows space . prominently).

@available(iOS 10.0, *)
case asciiCapableNumberPad // A number pad (0-9) that will always be ASCII digits.

public static var alphabet: UIKeyboardType { get } // Deprecated
}

这是一个使用列表中的键盘类型的示例：

1	textField.keyboardType = .numberPad

对于想使用UIDatePicker作为输入的人：

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UIDatePicker *timePicker = [[UIDatePicker alloc] initWithFrame:CGRectMake(0, 250, 0, 0)];
[timePicker addTarget:self action:@selector(pickerChanged:)
forControlEvents:UIControlEventValueChanged];
[_textField setInputView:timePicker];

// pickerChanged:
- (void)pickerChanged:(id)sender {
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:@"d/M/Y"];
_textField.text = [formatter stringFromDate:[sender date]];
}

这是Swift 4.2中的键盘类型

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// UIKeyboardType
//
// Requests that a particular keyboard type be displayed when a text widget
// becomes first responder.
// Note: Some keyboard/input methods types may not support every variant.
// In such cases, the input method will make a best effort to find a close
// match to the requested type (e.g. displaying UIKeyboardTypeNumbersAndPunctuation
// type if UIKeyboardTypeNumberPad is not supported).
//
public enum UIKeyboardType : Int {

case `default` // Default type for the current input method.

case asciiCapable // Displays a keyboard which can enter ASCII characters

case numbersAndPunctuation // Numbers and assorted punctuation.

case URL // A type optimized for URL entry (shows . / .com prominently).

case numberPad // A number pad with locale-appropriate digits (0-9, ?-?, ?-?, etc.). Suitable for PIN entry.

case phonePad // A phone pad (1-9, *, 0, #, with letters under the numbers).

case namePhonePad // A type optimized for entering a person's name or phone number.

case emailAddress // A type optimized for multiple email address entry (shows space @ . prominently).

@available(iOS 4.1, *)
case decimalPad // A number pad with a decimal point.

@available(iOS 5.0, *)
case twitter // A type optimized for twitter text entry (easy access to @ #)

@available(iOS 7.0, *)
case webSearch // A default keyboard type with URL-oriented addition (shows space . prominently).

@available(iOS 10.0, *)
case asciiCapableNumberPad // A number pad (0-9) that will always be ASCII digits.

public static var alphabet: UIKeyboardType { get } // Deprecated
}

以编程方式更改UITextField键盘类型swift 3.0

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lazy var textFieldTF: UITextField = {

let textField = UITextField()
textField.placeholder ="Name"
textField.frame = CGRect(x:38, y: 100, width: 244, height: 30)
textField.textAlignment = .center
textField.borderStyle = UITextBorderStyle.roundedRect
textField.keyboardType = UIKeyboardType.default //keyboard type
textField.delegate = self
return textField
}()
override func viewDidLoad() {
super.viewDidLoad()
view.addSubview(textFieldTF)
}