从堆栈导航器中删除屏幕

Question

我观察到Back按钮逻辑可以看到堆栈中的屏幕序列.我有一个放置在堆栈导航器中的抽屉导航器.

在堆栈顶部我有Splash画面.在仪表板上,当我按下后退按钮时,我需要启动屏幕.

进入应用程序后,如何从堆栈中删除启动画面,因此当我按下后退按钮仪表板时,它将退出应用程序,而不是转到SPLASH SCREEN.

/* @flow */

import React from "react";
import { Platform, Text } from "react-native";
import { Root } from "native-base";
import { StackNavigator, DrawerNavigator} from "react-navigation";
import Register from "./components/Register";
import Available from "./components/Available";
import Splash from "./components/splash/“;
import SideBar from "./components/sidebar";
import Discover from "./components/Discover/";
import Dashboard from "./components/Dashboard/";
import Contact from "./components/Contact"



const Drawer = DrawerNavigator(
  {
    Dashboard: { screen: Dashboard },
    Discover: { screen: Discover },
    Contact: { screen: Contact},
      },
  {
    navigationOptions: {
      gesturesEnabled: false,
    },
   initialRouteName: "Dashboard",
    contentOptions: {
      activeTintColor: "#e91e63"
    },
    drawerPosition: 'right',
    contentComponent: props => <SideBar {...props} />
  }
);


const AppNavigator = StackNavigator(
    {
      Splash: { screen: Splash },
      Drawer: { screen: Drawer },                           
      Available: { screen: Available },
        Register: { screen: Register },
    },
    {
       //  initialRouteName: “Splash”,
         headerMode: "none",
    }
);

export default () =>
    <Root>
        <AppNavigator />
    </Root>;

Answer 1

最简单的解决方案之一是，用新屏幕替换当前屏幕，这样用户就无法返回。

const SplashScreen: () => {
    ...
  navigation.replace("LoginScreen"); // Move forward and Remove this screen from stack

请参阅https://reactnavigation.org/docs/stack-actions/#replace

Answer 2

一种解决方案是重置启动屏幕组件内的堆栈,并将用户重定向到您喜欢的屏幕:

import { NavigationActions } from 'react-navigation'

const resetAction = NavigationActions.reset({
  index: 0,
  actions: [
    NavigationActions.navigate({ routeName: 'Drawer'})
  ]
})
this.props.navigation.dispatch(resetAction)

对于较新版本react-navigation:

import { StackActions, NavigationActions } from 'react-navigation';

const resetAction = StackActions.reset({
  index: 0,
  actions: [NavigationActions.navigate({ routeName: 'Profile' })],
});
this.props.navigation.dispatch(resetAction);

链接到官方文档

Answer 3

在react-navigation 5.x版本中。如果你想打开新屏幕并删除以前的堆栈屏幕，你可以写：-

navigation.dispatch(StackActions.replace('screen_name', {params: {}}));

替换操作允许替换导航状态下的路线。您可以将其导入为：-

import { StackActions } from '@react-navigation/native';

如果您想在堆栈导航上执行其他操作，请查看此链接 - https://reactnavigation.org/docs/stack-actions