NSURL URLWithString the url is always nil

Question

My code is like this :

NSString *urlStr = [NSString stringWithFormat:@"https://xxx.xxx.xx.xx/Pages/Service/FMService.svc/FileAudit?user=%@&pass=%@&fileId=%d&isAudited=1&opinion=%@",appDelegate.user.userName,appDelegate.user.password,self.todo.fileId,self.opinion];
    NSLog(@"URL=%@",urlStr);        
    NSURL *url = [NSURL URLWithString:urlStr];

And the url = (NSURL *) 0*00000000@"< nil >"

how can I work it out? thank you in advance!

If even one part of that string is nil, then the whole thing gets messed up. Check that every one of its parts aren't nil. — CodaFi
Another reason could be a type mismatch, e.g., if fileId is an object and not an integer. — Matthias
encode urlstring. [urlStr stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; — 0x8badf00d
Is it a existing sequence of your code? Or don't you call these strings in different places? — Gargo

StephenAshley.developer StephenAshley.developer · Accepted Answer · 2012-03-30T04:12:17

For debugging purposes, I would build up urlStr piece by piece instead of combining five NSStrings all at once. Put in an NSLog(@"%@", urlStr) statement after each addition to urlStr. This will reveal which piece of the puzzle is causing the problem.

NSURL URLWithString the url is always nil

1 Answers