objective-c - 如何在 Objective-C 中屏蔽电子邮件地址

Question

如何在 Objective-C 中屏蔽电子邮件地址字符串？

我想屏蔽电子邮件如下

[e-mail] 变成 m*****[e-mail]

标签： objective-c

Answer 1

@通过从范围位置减少 2 来查找范围并创建一个新范围。创建一个新字符串，其中的*字符按新的范围长度重复。现在替换范围中的字符。

NSArray *emails = @[@"[e-mail]",@"mugunthgmail.com",@"[e-mail]"];
NSString *emailRegex = @"[A-Z0-9a-z._%+-]{2,}+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}";
NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegex];
for (NSString *email in emails) {
    if ([emailTest evaluateWithObject:email]) {
        NSRange range = [email rangeOfString:@"@"];
        NSRange newRange = NSMakeRange(1, range.location-2);
        NSString *replace = [@"" stringByPaddingToLength:newRange.length withString:@"*" startingAtIndex:0];
        NSString * maskedEmail = [email stringByReplacingCharactersInRange:newRange withString:replace];
        NSLog(@"%@",maskedEmail);//m*****[e-mail]
    } else {
        NSLog(@"Invalid Email Address");
    }
}

m*****[e-mail]

无效的邮件地址

无效的邮件地址