06 2021 档案

摘要:1、设置4-14位的英文和数字输入 NSString *regex = @"^[A-Za-z0-9]{4,14}$"; NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex]; BOOL isMa 阅读全文
posted @ 2021-06-28 19:04 wq95230 阅读(102) 评论(0) 推荐(0)