正则表达式 只允许输入汉字和.

今天有个需求  姓名框只允许输入汉字和.

NSString *regex2 = @"^([\u4e00-\u9fa5]|[.])*$";

NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex2];

BOOL flag = [predicate evaluateWithObject:userName];

return flag;

记一下,省的再找了!!!!!!!!