验证uitextfield中的电话号码

Question

我使用以下代码以下列格式在文本字段中显示电话号码

，格式为123-456-7890

并且代码工作正常

，代码如下

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string {


NSCharacterSet *numSet = [NSCharacterSet characterSetWithCharactersInString:@"0123456789-"];
NSString *newString = [textField.text stringByReplacingCharactersInRange:range withString:string];
int charCount = [newString length]; 

if ([string isEqualToString:@""]) 
{
    return YES;
} 

if ([newString rangeOfCharacterFromSet:[numSet invertedSet]].location != NSNotFound|| [string rangeOfString:@"-"].location != NSNotFound|| charCount > 12) {
    return NO;
}

if (charCount == 3 || charCount == 7) {
    newString = [newString stringByAppendingString:@"-"];
}

amountField.text = newString;

return NO;


}

我正在使用 UItextfield 委托方法。

但是，当我正在编辑文本字段时，“ - ”意味着（如果我试图更改文本字段123-456-7890中的数字，则表示如果我再次输入剩余数字，则无法验证该值是否为123-456从这里它显示为123-4567890

任何人都可以帮我验证这件事

Answer 1

您有一个关于验证美国和国际电话号码的好教程

  

http://blog.stevenlevithan.com/archives/validate-phone-number

Answer 2

这是我以前做过的事情。这绝不是有效的，但可以完成工作，仅适用于美国数字。

- (NSString *) getLongPhoneNumber
{   
    NSString *storedNumber = @"15125551212"
    /* ^^ some incoming phone number */

    if(storedNumber == nil){
        storedNumber = @"5125551212";
    }

    //NSLocale *locale = [NSLocale currentLocale];
    //NSString *localeString = [locale localeIdentifier];

    NSString *tempStr = nil;
    NSRange range;
    range.length = 3;
    range.location = 3;
    NSString *areaCode = [storedNumber substringToIndex:3];
    NSString *phone1   = [storedNumber substringWithRange:range];
    NSString *phone2   = [storedNumber substringFromIndex:6];

    tempStr = [NSString stringWithFormat:@"1 (%@) %@-%@", areaCode, phone1, phone2];
    return tempStr;
}

Answer 3

此代码使用方便检查111-111-1111格式的电话号码

 NSString *phoneRegEx = @"[0-9]{3}+-[0-9]{3}+-[0-9]{4}";
            NSPredicate *phoneTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", phoneRegEx];
            if([phoneTest evaluateWithObject:phone]!=YES){

           //your code
            }
            else
            {
            //your code

            }

Answer 4

看看这段代码，这可能对你有所帮助

txtlpmobile.text是字符串（手机不输入）

 int length = [self getLength:txtLpMobile.text];
            if(length == 10) {
                if(range.length == 0)
                    return NO;
            }
            if(length == 3){
                NSString *num = [self formatNumber:txtLpMobile.text];
                txtLpMobile.text = [NSString stringWithFormat:@"(%@) ",num];

                if(range.length > 0) {
                    txtLpMobile.text = [NSString stringWithFormat:@"%@",[num substringToIndex:3]];

                }
            } else if(length == 6) {
                NSString *num = [self formatNumber:txtLpMobile.text];
                txtLpMobile.text = [NSString stringWithFormat:@"(%@) %@-",[num  substringToIndex:3],[num substringFromIndex:3]];
                if(range.length > 0) {
                    txtLpMobile.text = [NSString stringWithFormat:@"(%@) %@",[num substringToIndex:3],[num substringFromIndex:3]];
                }
            }

            NSUInteger newLength;
            newLength = [txtLpMobile.text length] + [string length] - range.length;
            NSCharacterSet *cs = [[NSCharacterSet characterSetWithCharactersInString:NUMBERS_ONLY] invertedSet];
            NSString *filtered = [[string componentsSeparatedByCharactersInSet:cs] componentsJoinedByString:@""];
            return (([string isEqualToString:filtered])&&(newLength <= CHARACTER_LIMIT));

格式化数字

-(NSString*)formatNumber:(NSString*)mobileNumber
{
    mobileNumber = [mobileNumber stringByReplacingOccurrencesOfString:@"(" withString:@""];
    mobileNumber = [mobileNumber stringByReplacingOccurrencesOfString:@")" withString:@""];
    mobileNumber = [mobileNumber stringByReplacingOccurrencesOfString:@" " withString:@""];
    mobileNumber = [mobileNumber stringByReplacingOccurrencesOfString:@"-" withString:@""];
    mobileNumber = [mobileNumber stringByReplacingOccurrencesOfString:@"+" withString:@""];

    int length = [mobileNumber length];
    if(length > 10)
    {
        mobileNumber = [mobileNumber substringFromIndex: length-10];
    }
    return mobileNumber;
}

获取长度

-(int)getLength:(NSString*)mobileNumber
{
    mobileNumber = [mobileNumber stringByReplacingOccurrencesOfString:@"(" withString:@""];
    mobileNumber = [mobileNumber stringByReplacingOccurrencesOfString:@")" withString:@""];
    mobileNumber = [mobileNumber stringByReplacingOccurrencesOfString:@" " withString:@""];
    mobileNumber = [mobileNumber stringByReplacingOccurrencesOfString:@"-" withString:@""];
    mobileNumber = [mobileNumber stringByReplacingOccurrencesOfString:@"+" withString:@""];

    int length = [mobileNumber length];

    return length;
}