ios - 禁用 iphone 键盘按钮

Question

有没有办法禁用 iPhone 键盘上的“，”按钮，或者至少阻止用户在我的 UITextField 中输入“，”？

Answer 1

是的。设置文本字段的委托，然后实现以下方法：

- (BOOL)textField:(UITextField *)tf shouldChangeCharactersInRange:(NSRange)r replacementString:(NSString *)str
{
    if (tf == theTextFieldYouWannaBehaveLikeThis) {
        if ([str isEqualToString:@","]) {
            return NO;
        }
    }
    return YES;
}

Answer 2

a 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).

    UIKeyboardTypeAlphabet = UIKeyboardTypeASCIICapable, // Deprecated

} UIKeyboardType;