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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]; }标签：
原文地址：http://www.cnblogs.com/QQ765286788/p/4766356.html
