URL Validation (Objective-C)
10,078
Solution 1
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.
Solution 2
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.
Solution 3
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
Comments
-
saleh Hosseinkahni almost 2 years
I am trying to validate a URL with this method:
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]; }
It does not function. I think the problem is with the regular expression.