1、数字字符校验

#define NUMBERSPERIOD @"0123456789."

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

NSCharacterSet *cs;

cs = [[NSCharacterSet characterSetWithCharactersInString:NUMBERSPERIOD] invertedSet];

NSString *filtered = [[string componentsSeparatedByCharactersInSet:cs] componentsJoinedByString:@""];

BOOL basicTest = [string isEqualToString:filtered];

return basicTest;

}

2、判断用户名，在2－16位

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

NSString*Regex = @"^\\w{2,16}{1}";

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

return [emailTest evaluateWithObject:text];

}

3、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:@"SELFMATCHES %@", Regex];

return [emailTest evaluateWithObject:text];

}

4、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:@"SELFMATCHES %@", Regex];

return [emailTest evaluateWithObject:text];

}

5、判断密码，6－16位

- (BOOL)CheckInput:(NSString *)text

{

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

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

return [emailTest evaluateWithObject:text];

}