fix #2616 (#2638)

ios/RCCViewController.m

   
   NSMutableDictionary *titleTextAttributes = [RCTHelpers textAttributesFromDictionary:self.navigatorStyle withPrefix:@"navBarText" baseFont:[UIFont boldSystemFontOfSize:17]];
   [self.navigationController.navigationBar setTitleTextAttributes:titleTextAttributes];
+
+  if (self.navigationItem.titleView && [self.navigationItem.titleView isKindOfClass:[RCCTitleView class]]) {
+    RCCTitleView *titleView = (RCCTitleView *)self.navigationItem.titleView;
+    RCCTitleViewHelper *helper = [[RCCTitleViewHelper alloc] init:viewController navigationController:viewController.navigationController title:titleView.titleLabel.text subtitle:titleView.subtitleLabel.text titleImageData:nil isSetSubtitle:NO];
+    [helper setup:self.navigatorStyle];
+  }
   
   NSMutableDictionary *navButtonTextAttributes = [RCTHelpers textAttributesFromDictionary:self.navigatorStyle withPrefix:@"navBarButton"];
   NSMutableDictionary *leftNavButtonTextAttributes = [RCTHelpers textAttributesFromDictionary:self.navigatorStyle withPrefix:@"navBarLeftButton"];