iPhone - adding a CGPath to a NSMutableArray... how?

Question

When I need to add a integer to an array I use

[myArray addObject:[NSNumber numberWithInt:myInt]];

but what about CGPaths? How do I add them to the array?

I need something like

"[NSValue valueWithCGPath:myPath]"... ???!!!

any clues? thanks

You might want to have a look at this question: http://stackoverflow.com/questions/4240481/how-to-store-cggradientref-in-nsmutablearray — albertamg, Jun 19 '11 at 17:35
this is brilliant, thanks. It will serve for other stuff I am doing, but for this case it is crashing, because after adding the object to the array I archive it. As CGPaths are CFType, the archiving crashes... but anyway, as I said, it will serve for other purposes in the same app. Thanks!!!!! +1 — Duck, Jun 19 '11 at 17:46

score 11 · Accepted Answer · answered Jun 19 '11 at 17:31

11

The easiest way if you can target iOS 3.2 or higher is to wrap the CGPathRef in a UIBezierPath:

[myArray addObject:[UIBezierPath bezierPathWithCGPath:myPath]];

If you need to support earlier iOS versions, you can use a CFArray instead of NSArray because CGPath derives from CFType.

answered Jun 19 '11 at 17:31

Daniel Dickison

Thanks. I have tried that but my problem is this: after adding all paths to the array, using the code you posted, I archive it using NSKeyedArchiver. When I try to unarchive that, it crashes. Is there a way to convert the path to another thing (instead of a UIBezierPath) and then store it on the array? I am just building this array for archival purposes. – Duck Jun 19 '11 at 17:36
Are you sure the archive actually produces anything? You should probably post a separate question, how to archive and restore a UIBezierPath. You may have to store the points and path metadata manually. – Kendall Helmstetter Gelner Jun 19 '11 at 18:10
Kendall - **[here it is](http://stackoverflow.com/questions/6400284/iphone-storing-and-retrieving-a-uibezierpath-with-nskeyedarchiver-crashing)** without any working solution. Yes, the archive is storing the data and the bezier data is loading successfully to NSData variable when unarchiving, but when I try to decode the data and produce a UIBezierPath, it crashes. – Duck Jun 19 '11 at 18:33

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