在Tab switch上，打开Tab Navigator内的stack Navigator的初始屏幕，而不是上次访问的屏幕

import { createAppContainer } from 'react-navigation';
import { createBottomTabNavigator } from 'react-navigation-tabs';
import { createStackNavigator } from 'react-navigation-stack';

// 创建stack Navigator
const StackNavigator = createStackNavigator({
  Screen1: {
    screen: Screen1Component,
  },
  Screen2: {
    screen: Screen2Component,
  },
  // 其他屏幕...
}, {
  initialRouteName: 'Screen1', // 设置初始屏幕为Screen1
});

// 创建Tab Navigator
const TabNavigator = createBottomTabNavigator({
  Tab1: {
    screen: Tab1Component,
  },
  Tab2: {
    screen: Tab2Component,
  },
  // 其他Tab...
}, {
  initialRouteName: 'Tab1', // 设置初始Tab为Tab1
});

// 创建App容器
const AppContainer = createAppContainer(TabNavigator);

export default AppContainer;