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Re: Why is [NSArray arrayWithObjects:] failing for me?
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Re: Why is [NSArray arrayWithObjects:] failing for me?


  • Subject: Re: Why is [NSArray arrayWithObjects:] failing for me?
  • From: "Eric E. Dolecki" <email@hidden>
  • Date: Sun, 3 Jan 2010 00:04:51 -0500

Just wondering if you need to release that array.

On Sat, Jan 2, 2010 at 2:44 PM, Charles Jenkins <email@hidden>wrote:

> Hello, everyone. I'm struggling through the steep Cocoa learning curve, and
> even things that should seemingly be very easy turn out to be difficult for
> me.
>
> I have an NSView in which I ask for the player names for a 4-person game. I
> have hooked the NSTextField objects to IBOutlet NSTextField* data members of
> my view's class, and I am at the point where the user clicks 'OK' and I need
> to save the player names.
>
> The NSTextField* variables are called playerA ... playerC, and i have no
> problem with using [playerA stringValue] to get the name of a player. The
> problem comes when I try to save the player name into an array. Here is the
> current version of my code:
>
>  NSString* pa = [playerA stringValue];
>  NSString* pb = [playerB stringValue];
>  NSString* pc = [playerC stringValue];
>  NSString* pd = [playerD stringValue];
>  NSArray* pnl = [NSArray arrayWithObjects:pa,pb,pc,pd,nil];
>  [parentDocument setPlayerNameList:pnl];
>  [pnl release];
>
> I think adding the strings to an array will retain them; that's why there
> aren't a bunch of retain calls here. setPlayerNameList should retain as
> well, so the only memory management I think I have to do here is release pnl
> once.
>
> pa, pb, pc, and pd are all good, according to the debugger as I step
> through, so the call to arrayWithObjects: looks good. But when I get the
> resulting array, all of the objects are trash and I get a BAD ACCESS
> exception when anybody tries to use them.
>
> I'm using XCode 3.2.1 on Snow Leopard, but I'm building using the 10.5 or
> later SDK, because I'm not using an 10.6-only features.
>
> So, what the heck am I doing wrong? Thanks!
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References: 
 >Why is [NSArray arrayWithObjects:] failing for me? (From: Charles Jenkins <email@hidden>)

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