登陆时常用的判断

1、判断用户名，在2－16位-

(BOOL)CheckInput:(NSString
*)_text{

NSString
*Regex = @"^\\w{2,16}$";

NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF
MATCHES %@", Regex];

return
[emailTest evaluateWithObject:_text];

}

2、判断手机号码，1开头的十一位数字

-(BOOL)CheckInput:(NSString
*)_text{

NSString
*Regex = @"1\\d{10}";

NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF
MATCHES %@", Regex];

return
[emailTest evaluateWithObject:_text];

}

3、判断邮箱

-(BOOL)CheckInput:(NSString
*)_text{

NSString
*Regex = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}";

NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF
MATCHES %@", Regex];

return
[emailTest evaluateWithObject:_text];

}

4、判断密码，6－16位

-(BOOL)CheckInput:(NSString
*)_text{

NSString
*Regex = @"\\w{6,16}";

NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF
MATCHES %@", Regex];

return
[emailTest evaluateWithObject:_text];

}