Question

My app works on a device with 5.1 (ipad). But it crashed on 6.0 simulator. Please, see an error.

@interface TwitterViewController : TWTweetComposeViewController

@property (weak, nonatomic) id<TwitterVCDelegate> delegateTwitter;

@end

//In QuotesVC I call

TwitterViewController *tweetVC = [[TwitterViewController alloc] init];
tweetVC.delegateTwitter = self;
[tweetVC postWithQuote:[quotesArray objectAtIndex:currentIndex]];

// my app has crashed

-[SLTwitterComposeViewController setDelegateTwitter:]: unrecognized selector sent to instance 0xa8d1bb0
 *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[SLTwitterComposeViewController setDelegateTwitter:]: unrecognized selector sent to instance 0xa8d1bb0'
 libc++abi.dylib: terminate called throwing an exception

Edit Everything works well If I doesn’t inherit TWTweetComposeViewController.

   TWTweetComposeViewController *tweetSheet =
    [[TWTweetComposeViewController alloc] init];
    [tweetSheet setInitialText:@"Initial Tweet Text!"];
    [self presentModalViewController:tweetSheet animated:YES];

I tested this code on ipad device 5.1 and ios simulator 6.0. It works well.

Is it permited to inherit TWTweetComposeViewController?

Answer 1

On my mind iOS 6 implicitly convert TWTweetComposeViewController to SLTwitterComposeViewController. SLTwitterComposeViewController don’t have any setDelegateTwitter: method. That’s why error occured.

IMHO