URL Validation (Objective-C)

Question

I am trying to validate a URL with this method:

Code:

- (BOOL) validateUrl: (NSString *) candidate {

    NSString *urlRegEx=
    @\"((https?|ftp|gop         


        

Answer 1

Try with this..

- (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 may help u out.

Answer 2

What about using the following:

NSURL * url = [NSURL URLWithString:@"http://www.google.com"];

BOOL isValid = [UIApplication.sharedApplication canOpenURL:url];

note: best practice is to use regex

Answer 3

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

Use if (URL && URL.scheme && URL.host) for checking URL.

Answer 4

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