Answer by neha for Change color of UIDocumentInteractionController nav bar

Try this code:

- (void)openEC:(NSURL*)url {       [UINavigationBar appearance].tintColor = [UIColor blueColor];       docController = [UIDocumentInteractionController interactionControllerWithURL:url];      [docController setDelegate:self];      [docController  presentOptionsMenuFromRect:self.view.bounds inView:self.view animated:YES];  }- (void)documentInteractionControllerDidDismissOptionsMenu:(UIDocumentInteractionController *)controller {      [UINavigationBar appearance].tintColor = [UIColor whiteColor];  }