//手机号码正则验证
- (BOOL)checkTel:(NSString *)str
{
    if ([str length] == 0) {
        [self showAlertView:@"请输入手机号码"];
        return NO;
    }
    NSString *regex = @"^((13[0-9])|(147)|(15[^4,\\D])|(18[0,5-9]))\\d{8}$";
    NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",regex];
    BOOL isMatch = [pred evaluateWithObject:str];
    if (!isMatch) {
        [self showAlertView:@"手机号码输入有误"];
        return NO;
    }else {
        [self showAlertView:@"修改成功"];
    }
    return YES;
}
 
- (void)showAlertView:(NSString *)string {
    UIAlertView *alertView = [[UIAlertView alloc]initWithTitle:@"提示" message:string delegate:nil cancelButtonTitle:@"确定" otherButtonTitles:nil,nil];
    [alertView show];
}