在 React Native 中实现 Tab Navigator 时出错

Question

尝试在 React Native 应用程序中创建 BottomTabNavigtor 。这是我的导航器代码。

import { createAppContainer } from "react-navigation";
import { createStackNavigator } from "react-navigation-stack";
import { createBottomTabNavigator } from '@react-navigation/bottom-tabs';
import { Platform } from "react-native";
import CategoriesScreen from "../screens/CategoriesScreen";
import CategoryMealScreen from "../screens/CategoryMealScreen";
import MealDetailScreen from "../screens/MealDetailScreen";
import FavoritesScreen from "../screens/FavoritesScreen";
import Colors from "../constants/colors";
const MealsNavigator = createStackNavigator(
{
Categories: {
screen: CategoriesScreen,
navigationOptions: {
title: "Meal Categories"
}
},
CategoryMeals: {
screen: CategoryMealScreen
},  MealDetail: MealDetailScreen
},
{
defaultNavigationOptions: {
headerStyle: {
backgroundColor: Platform.OS === 'android' ? Colors.primaryColor : ''
},
headerTintColor: Platform.OS === 'android' ? 'white' : Colors.primaryColor
},
}
);
const MealsFavTabNavigator = createBottomTabNavigator({
Meals: MealsNavigator,
Favorites: FavoritesScreen
});
export default createAppContainer(MealsFavTabNavigator);

遵循此应用程序的课程。收到此错误：

TypeError： (0， _native.createNavigatorFactory( 不是函数。 (在"(0， _native.createNavigatorFactory((BottomTabNavigator("中， '(0， _native.createNavigatorFactory(' 未定义(

任何帮助将不胜感激。谢谢。

Answer 1

好吧，如果您使用的是最新版本的 react-navigation，那么很多事情都发生了变化：

https://reactnavigation.org/docs/en/bottom-tab-navigator.html

现在你必须使用以下语法：

import { createBottomTabNavigator } from '@react-navigation/bottom-tabs';
const Tab = createBottomTabNavigator();
function MyTabs() {
return (
<Tab.Navigator>
<Tab.Screen name="Home" component={HomeScreen} />
<Tab.Screen name="Settings" component={SettingsScreen} />
</Tab.Navigator>
);
}