Question

我只想知道如何验证Textfield中的数字。我有一个UiTextField，我必须输入16位数字，而输入我可以重复相同的数字最多6次，当用户尝试输入超过6倍相同的数字意味着我需要显示警告

接受示例1231125641678923的

2277890652222256其不被接受见数字2重复超过6次

这里是我的示例代码，但它不适合我

 func textField(textField: UITextField, shouldChangeCharactersInRange range: NSRange, replacementString string: String) -> Bool {

//        var ErrorAlert:UIAlertView!

    if textField == sampleTextField{

        var updatedTextString : NSString = textField.text! as NSString
        updatedTextString = updatedTextString.stringByReplacingCharactersInRange(range, withString: string)

        if textField.text!.containsString(string) {


//                ErrorAlert=UIAlertView.init(title: "Error!", message: "please Enter Valid Policy Number", delegate: nil, cancelButtonTitle: "Ok")
//                ErrorAlert.show()

            NSLog("error")

        }
    }

Answer 1

var number = "1123455324222323"

for digit in 0...9
{
  if number.componentsSeparatedByString("\(digit)").count > 7
  { print("found more than 6 times : \(digit)") }
}

Answer 2

func textField(textField: UITextField, shouldChangeCharactersInRange range: NSRange, replacementString string: String) -> Bool {        

        var updatedTextString : NSString = textField.text! as NSString
        updatedTextString = updatedTextString.stringByReplacingCharactersInRange(range, withString: string)

        if (textField.text!.rangeOfString(string, options: .CaseInsensitiveSearch, range: nil, locale: nil) != nil) {

            var length:NSInteger = string.characters.count

            let str:Character = string[advance(string.startIndex, count(string)-1)]

            var integerCount:NSInteger = 0

            for digit in 0...count(string)-1
            {

                let str1:Character = string[advance(string.startIndex, digit)]

                if (str == str1)
                {
                    integerCount++
                }
            }

            if(integerCount > 6)
            {
                return false
            }
            else
            {
                return true
            }

        }
    return true
    }

验证相同的数字在Swift中的UITextFied中存在超过6次

2 个答案: