Email Id Validation and Mobile Phone Format

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

{

    if(textField == txtSignUpMobileNo)

    {

        int length = [self getLength:textField.text];

        //NSLog(@"Length  =  %d ",length);

        

        if(length == 10)

        {

            if(range.length == 0)

                return NO;

        }

        

        if(length == 4)

        {

            NSString *num = [self formatNumber:textField.text];

            textField.text = [NSString stringWithFormat:@"%@ ",num];

            if(range.length > 0)

                textField.text = [NSString stringWithFormat:@"%@",[num substringToIndex:4]];

        }

        else if(length == 7)

        {

            NSString *num = [self formatNumber:textField.text];

            

            //NSLog(@"%@",[num substringToIndex:4]);

            //NSLog(@"%@",[num substringFromIndex:4]);

            

            textField.text = [NSString stringWithFormat:@"%@ %@ ",[num  substringToIndex:4],[num substringFromIndex:4]];

            if(range.length > 0)

                textField.text = [NSString stringWithFormat:@"%@ %@",[num substringToIndex:4],[num substringFromIndex:4]];

        }

        

        return YES;

    }

    else

    {

        NSUInteger newLength = [textField.text length] + [string length] - range.length;

        return (newLength > 50) ? NO : YES;

    }

    

    return YES;

    

}

-(NSString*)formatNumber:(NSString*)mobileNumber

{

    mobileNumber = [mobileNumber stringByReplacingOccurrencesOfString:@"(" withString:@""];

    mobileNumber = [mobileNumber stringByReplacingOccurrencesOfString:@")" withString:@""];

    mobileNumber = [mobileNumber stringByReplacingOccurrencesOfString:@" " withString:@""];

    mobileNumber = [mobileNumber stringByReplacingOccurrencesOfString:@"-" withString:@""];

    mobileNumber = [mobileNumber stringByReplacingOccurrencesOfString:@"+" withString:@""];

    

    //NSLog(@"%@", mobileNumber);

    

    int length = (int)[mobileNumber length];

    if(length > 10)

    {

        mobileNumber = [mobileNumber substringFromIndex: length-10];

        //NSLog(@"%@", mobileNumber);

    }

    

    return mobileNumber;

    

}

-(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 = (int)[mobileNumber length];

    

    return length;

    

}

- (BOOL)textFieldShouldReturn:(UITextField *)textField

{

    [self resignKeyboard:0];

    

    [textField resignFirstResponder];

    return YES;

}

- (BOOL)validateEmail:(NSString *)email

{

    //DLog(@"checkEmailString = %@",email);

    BOOL emailFlg = NO;

    NSArray *atArr = [email componentsSeparatedByString:@"@"];

    

    //check with one @

    if ([atArr count] == 2)

    {

        NSArray *dotArr = [atArr[1] componentsSeparatedByString:@"."];

        

        //check with at least one .

        if ([dotArr count] >= 2)

        {

            emailFlg = YES;

            

            //all section can't be

            for (int i = 0; i<[dotArr count]; i++)

            {

                

                if ([dotArr[i] length] == 0 || [dotArr[i] rangeOfString:@" "].location != NSNotFound)

                {

                    emailFlg = NO;

                }

            }

        }

    }

    

    return emailFlg;

    

}