Re: NSArchiver
Re: NSArchiver
- Subject: Re: NSArchiver
- From: tyler <email@hidden>
- Date: Fri, 10 Aug 2001 22:27:39 -0700
On Saturday, August 11, 2001, at 07:28 PM, stuartbryson wrote:
Hi all,
In my program I create various 3D objects within a Build function. I
want to however save these 3D objects to file so I can just import them
when I run. I thought NSArchiver would do the trick. I started with the
code below:
Object3D *tempObj;
NSArchiver *tempArchive;
tempObj = [[[Sphere alloc] init] autorelease];
[tempObj setRadius:85.0];
[tempObj setColour:[[[RGBVector alloc] initWithValuesRed:1.0
green:0.0 blue:0.0]autorelease]];
[self addThreeDObject:tempObj];
this next line uses tempArchive which is nil since it's never been
initialized. For a class method you want something like: [NSArchiver
archiveRootObject: ...]; you send the message (method call) to the
CLASS because it's a class method.
if (![tempArchive archiveRootObject:tempObj
toFile:@"/MyPath/3dObject"]);
NSLog(@"File was not archived");
This does not work however... I am not sure why but the compiler says
that NSArchiver does not respond to archiveRootObject... I checked the
doco and perhaps I do not understand how to use the + methods in each
class. I understand that + methods are class methods and not instance
methods?
Any help on this would be appreciated. Perhaps NSArchiver isn't even
the way to go?
No, NSArchiver should work fine. It's pretty cool. Now your objects
have to implement the NSCoding protocol in order to be archived and read
back in.
luck,
tyler
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| | >NSArchiver (From: stuartbryson <email@hidden>) |