Is that possible? I've seen no method that would generate a plain old C vector or array. I have just NSNumber objects in my array which I need as C vector or array.
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possible duplicate of stackoverflow.com/questions/1011711/nsarray-to-c-arrayBjörn– Björn2010-05-05 08:53:17 +00:00Commented May 5, 2010 at 8:53
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2 Answers
An alternative to mouviciel's answer is to use NSArray's getObjects:range: method.
id cArray[10];
NSArray *nsArray = [NSArray arrayWithObjects:@"1", @"2" ... @"10", nil];
[nsArray getObjects:cArray range:NSMakeRange(0, 10)];
Or, if you don't know how many objects are in the array at compile-time:
NSUInteger itemCount = [nsArray count];
id *cArray = malloc(itemCount * sizeof(id));
[nsArray getObjects:cArray range:NSMakeRange(0, itemCount)];
... do work with cArray ...
free(cArray);
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If you need your C array to carry objects, you can declare it as :
id cArray[ ARRAY_COUNT ];
or
id * cArray = malloc(sizeof(id)*[array count]);
Then you can populate it using a loop:
for (int i=0 ; i<[array count] ; i++)
cArray[i] = [array objectAtIndex:i];
