URL Verification (Objective-C)

Question

I am trying to verify the URL using this method:

the code:

- (BOOL) validateUrl: (NSString *) candidate { NSString *urlRegEx= @"((https?|ftp|gopher|telnet|file|notes|ms-help):((//)|(\\\\))+[\w\d:#@%/;$()~_?\+-=\\\.&]*)"; NSPredicate *urlTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", urlRegEx]; return [urlTest evaluateWithObject:candidate]; } 

He does not work. I think the problem is regular expression.

Answer 1

You can use the + (id)URLWithString:(NSString *)URLString method, which returns nil if the string is incorrect.

Use if (URL && URL.scheme && URL.host) to check the URL.

Answer 2

Try with it ..

 - (BOOL) validateUrl: (NSString *) candidate { NSString *urlRegEx = @"(http|https)://((\\w)*|([0-9]*)|([-|_])*)+([\\.|/]((\\w)*|([0-9]*)|([-|_])*))+"; NSPredicate *urlTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", urlRegEx]; return [urlTest evaluateWithObject:candidate]; } 

it can help you.

Answer 3

 NSString *urlRegEx = @"http(s)?://([\\w-]+\\.)+[\\w-]+(/[\\w- ./?%&=]*)?";