Question

I realize this question is pretty basic, but I’m really stuck. I have a plist. I’m trying to read that into an array so I can work with it in various classes. So in one class I have:

+ (NSArray*)questionArray
{
static NSArray* questions = nil;

if(!questions)
{
    NSString *path = [[NSBundle mainBundle] pathForResource:@"Questions" ofType:@"plist"];
    NSDictionary *dic = [[NSDictionary alloc] initWithContentsOfFile:path];
    NSArray *questionsArray = [dic objectForKey:@"groups"];
    NSMutableArray *questionObjects = [[NSMutableArray alloc] initWithCapacity:     [questionsArray count]]; 

    for(NSDictionary* questionDic in questionsArray)
    {
        QuestionContainerObject* object = [[self alloc] initWithDictionary:questionDic];

        [questionObjects addObject:object];
        [object release];
    }

    questions = questionObjects;

    [dic release];
}

return questions;
}

I want to be able to access the things I pull out of the array from another class. I tried calling it like NSString *str = [QuestionContainerObject questionArray]; from my other class (after importing the header) but I get the ‘class method +questionArray not found’ warning.

Can someone please point me in the right direction? I’m really lost! Thanks!!

Answer 1

The warning is because the compiler does not know the questionArray method exists.
define this method in the header (QuestionContainerObject.h)

@interface QuestionContainerObject
+ (NSArray*)questionArray;
@end

and in the file using it:

#import QuestionContainerObject.h

Also remember to release objects created using [class alloc]