gistfile1.m

@implementation TTPostController
- (void)dismissAnimationDidStop {
  if ([_delegate respondsToSelector:@selector(postController:didPostText:withResult:)]) {
    // _result is a NewConversationController instance w/ retainCount of 2
    [_delegate postController:self didPostText:_textView.text withResult:_result];
  }

  TT_RELEASE_SAFELY(_originView);
  [self dismissPopupViewControllerAnimated:NO];
}
...
@end

@implementation XXXAppDelegate
- (void)postController:(TTPostController *)postController didPostText:(NSString *)text withResult:(id)result {
    // result == postController
    if ([result isKindOfClass:[NewConversationModel class]]) {
        TTNavigator *navigator = [TTNavigator navigator];
        
        NSString *convoURL = ((NewConversationModel *)result).URL;
        NSString *streamURL = [NSString stringWithFormat:@"tt://feed/%d", FeedTypeStream];
        
        [navigator openURLAction:[[TTURLAction actionWithURLPath:convoURL] applyParentURLPath:streamURL]];
    }
}
..
@end