IOS正则表达式

ios_che

于 2012-03-06 16:50:13 发布

阅读量2.9k

点赞数

CC 4.0 BY-SA版权

文章标签： ios regex 正则表达式 email

本文链接：https://blog.youkuaiyun.com/ios_che/article/details/7325528

 UITextField * username = (UITextField *) [self.view viewWithTag:666];
    UITextField * password = (UITextField *) [self.view viewWithTag:999];
    UITextField * repassword = (UITextField *) [self.view viewWithTag:888];
    UITextField *email = (UITextField *) [self.view viewWithTag:777];

    NSString * regex1 = @"(^[A-Za-z0-9]{3,20}$)";  
    NSString * regex2 = @"(^[A-Za-z0-9]{6,20}$)"; 
    NSString * regex3 = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}"; 
    
    NSPredicate * pred1 = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex1]; 
    NSPredicate * pred2 = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex2];
    NSPredicate * pred3 = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex3];
    
    BOOL isUsername  = [pred1 evaluateWithObject:username.text];  
    BOOL isPassword =  [pred2 evaluateWithObject:password.text];
    BOOL isEmail = [pred3 evaluateWithObject:email.text];