Question

This code is from the Phonegap Code: IAP Plugin. The error happens on the line of the code right after the “sent js”. All the elements sent to the function are non-nil except for the last one ‘nil’. I even logged them out to make sure they were sent. This code is right out of the plugin (https://github.com/usmart/InAppPurchaseManager-EXAMPLE) and has not been modified except for the logging. In the debugger i saw that none of the objects were nil, so i don’t understand why the error is happening.

Here is the error:

[__NSArrayI JSONRepresentation]: unrecognized selector sent to
instance 0xdc542d0
2013-02-13 23:26:17.209 GoblinSlots[4519:707] * Terminating app due to uncaught exception ‘NSInvalidArgumentException’, reason:
‘-[__NSArrayI JSONRepresentation]: unrecognized selector sent to
instance 0xdc542d0’

here is the code:

      - (void)productsRequest:(SKProductsRequest *)request didReceiveResponse:   (SKProductsResponse *)response
      {
        NSLog(@"got iap product response");
        for (SKProduct *product in response.products) {
            NSLog(@"sending js for %@", product.productIdentifier);
            NSLog(@"  title %@", product.localizedTitle );
            NSLog(@"  desc%@ - %@", product.localizedDescription, product.localizedPrice );


NSArray *callbackArgs = [NSArray arrayWithObjects:
                                 NILABLE(product.productIdentifier),
                                 NILABLE(product.localizedTitle),
                                 NILABLE(product.localizedDescription),
                                 NILABLE(product.localizedPrice),
                                 nil ];
        NSLog(@"sent js");

        NSString *js = [NSString stringWithFormat:@"%@.apply(plugins.inAppPurchaseManager, %@)", successCallback, [callbackArgs JSONSerialize]];
        NSLog(@"js: %@", js);
        [command writeJavascript: js];
    }

Answer 1

JSONRepresentation is a category that SBJson adds so you have to include SBJson.h in the class that uses it.