Question

我正在使用嵌套导航抽屉＆gt;标签＆gt;堆栈导航器。

导航器正在工作，但是当我点击标签项时，它会抛出以下错误

undefined不是对象（评估＆＃39; _ref4.route＆＃39;） _getOnPress TabView.js：110：44 _handleOnPress TabBarTop.js：127：31 onPress TabBar.js：466：33 _callTimer JSTimers.js：156：15 callTimers JSTimers.js：411：17 __callFunction MessageQueue.js：302：47 MessageQueue.js：116：26 __守护 MessageQueue.js：265：6 callFunctionReturnFlushedQueue MessageQueue.js：115：17

我被困在这里我尝试了许多但没有成功

这是我的代码

DrawerNav.js

import React, { Component } from 'react';
import { DrawerNavigator} from 'react-navigation';
import Icon from "react-native-vector-icons/FontAwesome";
import stackNav from './stackNav';


const Drawer = DrawerNavigator({
    DrawerItem1: {
        screen: stackNav,
        navigationOptions: {
            drawerLabel: "Drawer Item 1",
            drawerIcon: ({ tintColor }) => <Icon name="rocket" size={24} />
        },
    },
    DrawerItem2: {
        screen: stackNav,
        navigationOptions: {
            drawerLabel: "Drawer Item 2",
            drawerIcon: ({ tintColor }) => <Icon name="rocket" size={24} />
        },
    }
});


export default Drawer;

TabNav.js

import React, { Component } from 'react';
import { TabNavigator, TabView } from 'react-navigation'
import Icon from "react-native-vector-icons/FontAwesome";
import MainScreen from './screens/MainScreen';

const tabNav = TabNavigator({
    TabItem1: {
        screen: MainScreen,
        navigationOptions: {
            tabBarLabel:"Tab One",
            tabBarIcon: ({ tintColor }) => <Icon name={"glass"} size={30} color={tintColor} />
        }
    },

    TabItem2: {
        screen: MainScreen,
        navigationOptions: {
            tabBarLabel:"Tab Two",
            tabBarIcon: ({ tintColor }) => <Icon name={"glass"} size={30} color={tintColor} />
        }
    },

    TabItem3: {
        screen: MainScreen,
        navigationOptions: {
            tabBarLabel:"Tab Three",
            tabBarIcon: ({ tintColor }) => <Icon name={"glass"} size={30} color={tintColor} />
        }
    }

    ///... add more tabs here

}, {
        tabBarPosition: 'bottom',
        tabBarOptions: {
            activeTintColor: '#222'
        },
});


export default tabNav;

stackNav.js

import React, { Component } from 'react';
import { TouchableOpacity } from 'react-native';
import { StackNavigator} from 'react-navigation'
import IOSIcon from "react-native-vector-icons/Ionicons";
import DetailScreen from './screens/DetailScreen';
import MainScreen from './screens/MainScreen';
import tabNav from './tabNav'

const stackNav = StackNavigator({
    Main: {
        screen: tabNav,
        navigationOptions:({navigation}) => ({
            title: "Main",
            headerLeft:(
              <TouchableOpacity onPress={() => navigation.navigate("DrawerOpen")}>
                <IOSIcon name="ios-menu" size={30} />
              </TouchableOpacity>
            ),
            headerStyle: { paddingRight: 10, paddingLeft: 10 },
        })
    },
    Detail: {
        screen: DetailScreen,
        navigationOptions: (props) => ({
            title: "Detail",
        })
    }
})

export default stackNav;

Answer 1

我与TabNavigator有同样的错误。

我也执行了官方反应导航示例（https://github.com/react-community/react-navigation/blob/master/examples/NavigationPlayground/js/SimpleTabs.js）但没有成功（同样的错误）。

我的猜测是，这是最新版本的Expo / React Native的错误。

您使用的是哪个版本？

我正在使用：

"dependencies": {
    "expo": "^22.0.2",
    "react": "16.0.0-beta.5",
    "react-native": "^0.49.5",
    "react-navigation": "^1.0.0-beta.20"
  }

已确认：从Create React Native App中弹出可解决此问题。因此，它似乎是Create React Native App或Expo的一个错误。

tabBarOnPress无法在react-native中的反应导航选项卡中工作

1 个答案: