Re: stringWithContentsOfURL doesn't work sometimes
Re: stringWithContentsOfURL doesn't work sometimes
- Subject: Re: stringWithContentsOfURL doesn't work sometimes
- From: Michael Hanna <email@hidden>
- Date: Tue, 12 Jul 2005 19:24:27 -0400
Accessing resources with ScreenSavers is problematic sometimes I
noticed. For instance borkware.com has some excellent tips on
accessing bundle contents:
http://borkware.com/quickies/one?topic=ScreenSavers
This may seem rather unwieldy but what about using CURLHandler to
grab the URL? You'd need to add it as a loadable framework at
runtime, but it should work fine.
Michael
On 12-Jul-05, at 3:34 PM, Lorenzo wrote:
Hi,
I made a screensaver.
In order to verify if the user is connected to internet I try to get a
stringWithContentsOfURL from a text file posted on my web site. I
append a
random number after the URL link to avoid cached results. I get two
problems.
1) if the user is not connected I don't get any error in the
variable error.
Anyway the string I should get remains empty so I understand the
user is
not connected. Not too bad.
2) when the screensaver is installed in /Library/Screen Savers/
it properly gets the string with stringWithContentsOfURL all the
time.
But when the screensaver is installed in (Home)/Library/Screen
Savers/
it freezes just when it calls stringWithContentsOfURL. This
occurrs on
some machines only. I presume they have a FireWall. Anyway, the
FireWall
should not involve the result of stringWithContentsOfURL.
Don't you think so?
Do you know how to fix/workaround the problem?
I include here my code.
----------------------
link = @"http://www.mydomain.com/connection_text.txt?";;
randomIntString = [[NSNumber numberWithLong:rand()] stringValue];
fileURLPath = [link stringByAppendingString:randomIntString];
getText = @"";
url = [NSURL URLWithString:fileURLPath];
if(url){
err = [NSError errorWithDomain:NSURLErrorDomain code:0
userInfo:nil];
getText = [NSString stringWithContentsOfURL:url
encoding:NSISOLatin1StringEncoding error:&err];
}
// the text file contains the string "YES".
connection = ([getText length] != 0);
----------------------
Best Regards
--
Lorenzo
email: email@hidden
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