ios 以编程方式更改 UITextField 键盘类型

Programmatically change UITextField Keyboard type

提问by eric.mitchell

Is it possible to programmatically change the keyboard type of a uitextfield so that something like this would be possible:

是否可以以编程方式更改 uitextfield 的键盘类型，以便这样的事情成为可能：

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

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

回答by PengOne

There is a keyboardTypeproperty for a UITextField:

有一个keyboardType属性UITextField：

typedef enum {
    UIKeyboardTypeDefault,                // Default type for the current input method.
    UIKeyboardTypeASCIICapable,           // Displays a keyboard which can enter ASCII characters, non-ASCII keyboards remain active
    UIKeyboardTypeNumbersAndPunctuation,  // Numbers and assorted punctuation.
    UIKeyboardTypeURL,                    // A type optimized for URL entry (shows . / .com prominently).
    UIKeyboardTypeNumberPad,              // A number pad (0-9). Suitable for PIN entry.
    UIKeyboardTypePhonePad,               // A phone pad (1-9, *, 0, #, with letters under the numbers).
    UIKeyboardTypeNamePhonePad,           // A type optimized for entering a person's name or phone number.
    UIKeyboardTypeEmailAddress,           // A type optimized for multiple email address entry (shows space @ . prominently).
    UIKeyboardTypeDecimalPad,             // A number pad including a decimal point
    UIKeyboardTypeTwitter,                // Optimized for entering Twitter messages (shows # and @)
    UIKeyboardTypeWebSearch,              // Optimized for URL and search term entry (shows space and .)

    UIKeyboardTypeAlphabet = UIKeyboardTypeASCIICapable, // Deprecated

} UIKeyboardType;

Your code should read

你的代码应该阅读

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

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

回答by jterry

It's worth noting that if you want a currently-focusedfield to update the keyboard type immediately, there's one extra step:

值得注意的是，如果您希望当前聚焦的字段立即更新键盘类型，还有一个额外的步骤：

// textField is set to a UIKeyboardType other than UIKeyboardTypeEmailAddress

[textField setKeyboardType:UIKeyboardTypeEmailAddress];
[textField reloadInputViews];

Without the call to reloadInputViews, the keyboard will not change until the selected field (the first responder) loses and regains focus.

如果没有调用reloadInputViews，键盘将不会改变，直到所选字段（第一响应者）失去并重新获得焦点。

A full list of the UIKeyboardTypevalues can be found here, or:

可以在此处找到完整的UIKeyboardType值列表，或者：

typedef enum : NSInteger {
    UIKeyboardTypeDefault,
    UIKeyboardTypeASCIICapable,
    UIKeyboardTypeNumbersAndPunctuation,
    UIKeyboardTypeURL,
    UIKeyboardTypeNumberPad,
    UIKeyboardTypePhonePad,
    UIKeyboardTypeNamePhonePad,
    UIKeyboardTypeEmailAddress,
    UIKeyboardTypeDecimalPad,
    UIKeyboardTypeTwitter,
    UIKeyboardTypeWebSearch,
    UIKeyboardTypeAlphabet = UIKeyboardTypeASCIICapable
} UIKeyboardType;

回答by Alan Moore

Yes you can, for example:

是的，您可以，例如：

[textField setKeyboardType:UIKeyboardTypeNumberPad];

回答by fonz

    textFieldView.keyboardType = UIKeyboardType.PhonePad

This is for swift. Also in order for this to function properly it must be set after the textFieldView.delegate = self

这是为了迅捷。此外，为了使其正常运行，必须在textFieldView.delegate = self

回答by Hossam Ghareeb

to make the text field accept alpha numeric only set this property

使文本字段接受字母数字只设置此属性

textField.keyboardType = UIKeyboardTypeNamePhonePad;

回答by Kishor Kumar Rawat

_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;

回答by Sanket Ray

Swift 4

斯威夫特 4

If you are trying to change your keyboard type when a condition is met, follow this. For example: If we want to change the keyboard type from Defaultto Number Padwhen the count of the textfield is 4 or 5, then do this:

如果您在满足条件时尝试更改键盘类型，请按照此操作。例如：如果我们想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：

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()
 }

回答by Kyle Rosenbluth

There is a property for this called keyboardType. What you'll want to do is replace where you have strings @"Number Padand @"Defaultwith UIKeyboardTypeNumberPadand UIKeyboardTypeDefault.

有一个名为keyboardType. 什么，你会想要做的就是代替，你必须弦 @"Number Pad和@"Default与UIKeyboardTypeNumberPad和UIKeyboardTypeDefault。

Your new code should look something like this:

您的新代码应如下所示：

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

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

Good Luck!

祝你好运！

回答by pableiros

This is the UIKeyboardTypesfor Swift 3:

这是UIKeyboardTypesSwift 3 的：

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
}

This is an example to use a keyboard type from the list:

这是使用列表中的键盘类型的示例：

textField.keyboardType = .numberPad

回答by Brian

for people who want to use UIDatePickeras input:

对于想要UIDatePicker用作输入的人：

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]];
}