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POAfter unarchiving my array, it suddenly contains NSRects instead of NSValues. How to retrieve the,
 

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  1. POAfter unarchiving my array, it suddenly contains NSRects instead of NSValues. How to retrieve the,
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    <p>I wrapped <code>NSRect</code>s in <code>NSValue</code>s to get them into an NSMutableArray. I now want to add saving/loading capabilities to my app, so I thought I'd use <code>NSKeyedArchiver</code> and <code>NSKeyedUnarchiver</code>. <strong>Wrong!</strong> <code>NSKeyedArchiver cannot archive structs</code>. After a bit of searching I found a forum post from someone with the same problem. He solved it by using <code>NSArchiver</code> and <code>NSUnarchiver</code>. I implemented that, but once again, it didn't work. I can now encode it, but if I decode my array, I get back an array of <em><code>NSRect</code>s</em>! You can't even put them into an array! But I don't care, as long as I can get my rects back. But I can't, because <code>NSArray</code> only has methods for retrieving an object. A struct is not an object, so I can't retrieve my rects. How is this possible? How can I retrieve my archived rects?</p> <p>Part of MyDocument.m:</p> <pre><code>- (NSData *)dataOfType:(NSString *)typeName error:(NSError **)outError { NSMutableArray *array = odview.ovals; return [NSArchiver archivedDataWithRootObject:array]; } - (BOOL)readFromData:(NSData *)data ofType:(NSString *)typeName error:(NSError **)outError { NSMutableArray *array = [NSUnarchiver unarchiveObjectWithData:data]; NSMutableArray *newOvals = [NSMutableArray array]; NSLog(@"array: %@", array); NSUInteger i, count = [array count]; for (i = 0; i &lt; count; i++) { NSRect rect = [array objectAtIndex:i]; // I can't do that because a struct is not an object! [newOvals addObject:[NSValue valueWithRect:rect]]; } odview.ovals = newOvals; return YES ; } </code></pre> <p><strong>How is is possible the wrapping NSValues disappear and how can I safely save and load my NSRects?</strong></p>
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    1. COIt is not possible -- NSRects are not objects, so they cannot possibly appear in an NSArray. What makes you think this is happening?
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      1. POAfter unarchiving my array, it suddenly contains NSRects instead of NSValues. How to retrieve the,
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    2. COThe NSLog statement. I'd be the first one to agree with you this is impossible. if it wasn't for the output of the `NSLog` statement: `2013-01-30 17:47:38.440 OvalFun[1000:a0f] array: ( "NSRect: {{207, 82}, {150, 207}}", "NSRect: {{87, 79}, {218, 133}}" )`
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      1. POAfter unarchiving my array, it suddenly contains NSRects instead of NSValues. How to retrieve the,
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    3. COWhat does the debugger say? I doubt these are NSRects, they are probably NSValues and the -description; method is giving you the report you're seeing. NSArray's -description method cannot print an NSRect, it would crash.
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