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Re: Crash while making NSDictionary... Help!
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Re: Crash while making NSDictionary... Help!


  • Subject: Re: Crash while making NSDictionary... Help!
  • From: Dylan Barrie <email@hidden>
  • Date: Tue, 21 May 2002 20:29:47 -0700

Oh jeez... Don't *I* feel foolish. :)

Thanks, that did the trick. :)

Dylan Barrie


On Tuesday, May 21, 2002, at 08:21 PM, Andy Lee wrote:

At 7:51 PM -0700 5/21/02, Dylan Barrie wrote:
NSUserDefaults *defaults;
NSDictionary *appDefaults;
NSString *keys[2];
NSString *values[2];

keys[0] = @"Name";
values[0] = @"Unnamed Player";
keys[1] = @"FirstRun";
values[1] = @"YES";

NSLog (@"1) %@ %@ 2) %@ %@", keys[0], values[0], keys[1], values[1]);

appDefaults = [NSDictionary dictionaryWithObjects:(id *)values forKeys:(id *)keys count:2];
[defaults registerDefaults:appDefaults];

It crashes trying to create the NSDictionary (appDefaults = [NSDictionary ... ]), and I'm not sure why.

The problem is here:

[defaults registerDefaults:appDefaults];

The variable "defaults" has not been initialized to anything, and therefore contains an unpredictable value. You are sending the -registerDefaults: message to a non-nil non-object, hence the crash.

I haven't used NSUserDefaults myself, but it looks like you should try...

defaults = [NSUserDefaults standardUserDefaults];
[defaults registerDefaults:appDefaults];

...or simply:

[[NSUserDefaults standardUserDefaults] registerDefaults:appDefaults];

I know you thought the problem was in creating the NSDictionary, but it doesn't look that way.

--Andy

P.S. Hey look guys, this time I *am* making the right call about an uninitialized variable. ;)
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 >Re: Crash while making NSDictionary... Help! (From: Andy Lee <email@hidden>)

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