XZ_iOS之textFiled输入的手机号只能是数字且是11位

#pragma mark UITextFieldDelegate
//只允许输入数字，且只有11位数
-(BOOL)textField:(UITextField*)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString*)string{
    if (textField.text.length== 11) {
        if ([string isEqualToString:@""]) {
            return YES;
        }
        else {
            return NO;
        }
    }
    return [selfvalidateNumber:string];
}
//只允许输入数字
- (BOOL)validateNumber:(NSString*)number{
    BOOL res = YES;
    NSCharacterSet* tmpSet = [NSCharacterSetcharacterSetWithCharactersInString:@"0123456789"];
    int i = 0;
    while (i < number.length) {
        NSString * string = [number substringWithRange:NSMakeRange(i,1)];
        NSRange range = [string rangeOfCharacterFromSet:tmpSet];
        if (range.length== 0) {
            res = NO;
            break;
        }
        i++;
    }
    return res;
}



//检查是否为手机号的方法
-(BOOL)checkPhoneNumInput:(NSString*)phoneStr
{
    NSString *photoRange = @"^1(3[0-9]|4[0-9]|5[0-9]|7[0-9]|8[0-9])\\d{8}$";//正则表达式
    NSPredicate *regexMobile = [NSPredicatepredicateWithFormat:@"SELF MATCHES %@",photoRange];
    BOOL result = [regexMobile evaluateWithObject:phoneStr];
    if (result) {
        return YES;
    } else {
        return NO;
    }
   

}