反应本机导航样式不起作用-堆栈和抽屉引人入胜

Question

有人对使用堆栈和抽屉导航有经验吗？当我在OrdersNavigator和ProductsNavigator中添加navigationOptions时，图标和标题样式丢失了。请帮忙！

这是我的代码：

import React from "react";
import { createAppContainer } from "react-navigation";
import { createDrawerNavigator } from "react-navigation-drawer";
import { createStackNavigator } from "react-navigation-stack";
import { Platform } from "react-native";

import ProductsOverviewScreen from "../screens/shop/ProductsOverviewScreen";
import ProductDetailScreen from "../screens/shop/ProductDetailScreen";
import CartScreen from "../screens/shop/CartScreen";
import OrdersScreen from "../screens/shop/OrdersScreen";

import Colors from "../constants/Colors";
import { Ionicons } from "@expo/vector-icons";

const defaultNavOptions = {
  headerStyle: {
    backgroundColor: Platform.OS === "android" ? Colors.primary : ""
  },
  headerTitleStyle: {
    fontFamily: "open-sans-bold"
  },
  headerBackTitleStyle: {
    fontFamily: "open-sans"
  },
  headerTintColor: Platform.OS === "android" ? "white" : Colors.primary
};

const ProductsNavigator = createStackNavigator(
  {
    ProductsOverview: ProductsOverviewScreen,
    ProductDetail: ProductDetailScreen,
    Cart: CartScreen
  },
  {
    navigationOptions: {
      drawerIcon: (drawerConfig) => (
        <Ionicons name={Platform.OS === "android" ? "md-cart" : "ios-cart"} size={23} color={drawerConfig.tintColor} />
      )
    }
  },
  {
    defaultNavigationOptions: defaultNavOptions
  }
);

const OrdersNavigator = createStackNavigator(
  {
    Orders: OrdersScreen
  },
  {
    navigationOptions: {
      drawerIcon: (drawerConfig) => (
        <Ionicons name={Platform.OS === "android" ? "md-list" : "ios-list"} size={23} color={drawerConfig.tintColor} />
      )
    }
  },
  { defaultNavigationOptions: defaultNavOptions }
);

const ShopNavigator = createDrawerNavigator(
  {
    Products: ProductsNavigator,
    Orders: OrdersNavigator
  },
  {
    contentOptions: {
      activeTintColor: Colors.primary
    }
  }
);

export default createAppContainer(ShopNavigator);

See screenshot of UI.

应该有标题左侧和右侧图标，带有彩色标题。如果我删除OrderNavigation和ProductNavigation的navigationOptions，则会显示它们。