iphonestructnsmutablearraynsvalue

How to wrap a Struct into NSObject

this is supposed to be trivial… I think, but I can't find a way how to wrap a Struct variable into an NSObject. Is there a method to do so? If not, how would I go about adding a struct into an NSMutableArray?

Thanks.

Solution

  • Hm, try to look at the NSValue at https://developer.apple.com/documentation/foundation/nsvalue

    You can use it like

    struct aStruct
{
    int a;
    int b;
};
typedef struct aStruct aStruct;

    Then sort of "wrap" it to an NSValue object like:

    aStruct struct; struct.a = 0; struct.b = 0;
NSValue *anObj = [NSValue value:&struct withObjCType:@encode(aStruct)];
NSArray *array = @[anObj];

    To pull the struct out from NSValue use:

    NSValue *anObj = [array firstObject];
aStruct struct;
[anObj getValue:&struct];

    I guess later on, you can have a category from NSValue to make that better =D