iOS开发知识点汇集一 —— 输入校验

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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];}

	
				
		
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