React Native - 没有为登录定义路由

Question

我正在学习通过将 tabNavigator、DrawerNavigator 和 StackNavigator 配置为一个没有 NativeBase 或 Expo 的单一反应导航库来实现原生反应。

我实现了它，但当我在应用程序中执行某些特定序列时出现错误。

应用程序以选项卡屏幕启动。 -> 更改选项卡 -> 打开抽屉 -> 转到堆栈 -> 打开抽屉，然后转到选项卡会出现此错误。

这是我的代码：

App.js

import React from 'react';
import {Drawer} from "./src/navigation/MergedNavigator";
import {View,Text} from "react-native";

const App = () => (
    <View style={{flex: 1,backgroundColor: '#293656'}}>
        <Drawer />
    </View>
);

export default App;

MergedNavigator.js

import {DrawerNavigator,StackNavigator,createBottomTabNavigator} from 'react-navigation';

// stack navigation screens
import DetailScreen from '../screens/detail';
import MainScreen from '../screens/main';
import ForgotScreen from '../screens/ForgotScreen';
import RegisterScreen from '../screens/RegisterScreen';

// tab navigator screens
import LoginScreen from '../screens/Login';
import TabOne from '../screens/tabA';
import TabTwo from '../screens/tabB';

//plain

export const stack = StackNavigator({
    DetailScreen:{screen:DetailScreen},
    MainScreen:{screen:MainScreen}
},{
    initialRouteName:'DetailScreen'
});

const secondStack = StackNavigator({
    RegisterScreen:{screen:RegisterScreen},
    ForgotScreen:{screen:ForgotScreen}
},{
    initialRouteName:'ForgotScreen'
})

export const Tabs = createBottomTabNavigator({
    Login:{screen:LoginScreen},
    TabOne:{screen:secondStack},
    TabTwo:{screen:TabTwo}
},{
    animationEnabled:true
})

export const Drawer = DrawerNavigator({
    Tabs:{screen:Tabs},
    Stack:{screen:stack}
})

所有其他导入的堆栈屏幕除了标题之外什么都没有。 我的代码有什么问题？或者有没有更好的方法可以仅通过反应导航来实现这所有 3 个导航器？

Answer 1

在Stack内重置子操作存在问题，可以在此处

看到

因此，解决此问题的方法是将

createBottomTabNavigator

包裹在

createStackNavigator

和

headerMode: none

中，以达到所需的效果。

信息

通过添加直接嵌套在 DrawerNavigator 中的 StackNavigator，子操作将仅重置为定义的 StackNavigator 并且不会影响子屏幕状态，因此不会抛出错误，如中所述代码

if (route.index !== undefined && route.index !== 0) {
   subAction = NavigationActions.reset({
   index: 0,
   actions: [
      NavigationActions.navigate({
      routeName: route.routes[0].routeName,
   }),
  ],
 });
}

MergedNavigator.js

import ForgotScreen from '../screens/ForgotScreen';
import RegisterScreen from '../screens/RegisterScreen';

// tab navigator screens
import LoginScreen from '../screens/Login';
import TabOne from '../screens/tabA';
import TabTwo from '../screens/tabB';

//plain

export const stack = StackNavigator({
    DetailScreen:{screen:DetailScreen},
    MainScreen:{screen:MainScreen}
},{
    initialRouteName:'DetailScreen'
});

const secondStack = StackNavigator({
    RegisterScreen:{screen:RegisterScreen},
    ForgotScreen:{screen:ForgotScreen}
},{
    initialRouteName:'ForgotScreen'
})

export const Tabs = createBottomTabNavigator({
    Login:{screen:LoginScreen},
    TabOne:{screen:secondStack},
    TabTwo:{screen:TabTwo}
},{
    animationEnabled:true
})

const TabStack = createStackNavigator({ //... Adding the Stack here
  Tabs: {screen: Tabs}
}, {
  headerMode: 'none'
})

export const Drawer = DrawerNavigator({
    Tabs:{screen:Tab},
    Stack:{screen:stack}
})

这是已启用标头的修改后的 Snack

Answer 2

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

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

当您将键设置为未定义时，导航器使用实际堆栈，而不是根。

Answer 3

首先，您的主要问题是您无法在代码上创建多个 StackNavigator()。

请尝试不同的导航器进行重定向，如下面的示例代码。

import {DrawerNavigator,StackNavigator,createBottomTabNavigator,createMaterialTopTabNavigator} from 'react-navigation';

// stack navigation screens
import DetailScreen from '../screens/detail';
import MainScreen from '../screens/main';
import ForgotScreen from '../screens/ForgotScreen';
import RegisterScreen from '../screens/RegisterScreen';

// tab navigator screens
import * as TAB from '../tab';

export const stack = StackNavigator({
    DetailScreen:{screen:DetailScreen},
    MainScreen:{screen:MainScreen}
},{
    initialRouteName:'DetailScreen'
});

const secondStack = createMaterialTopTabNavigator({
    RegisterScreen:{screen:RegisterScreen},
    ForgotScreen:{screen:ForgotScreen}
},{
    initialRouteName:'ForgotScreen'
})

export const Tabs = createBottomTabNavigator({
    Login:{screen:TAB.Login},
    TabOne:{screen:secondStack},
    TabTwo:{screen:TAB.TabB}
},{
    animationEnabled:true,
    initialRouteName:'Login'
})

export const Drawer = DrawerNavigator({
    Tabs:{screen:Tabs},
    Stack:{screen:stack}
},
{
    animationEnabled:true,
    initialRouteName:'Tabs'
})

希望上面的代码片段对您有用。