有没有办法在使用 createBottomTabNavigator 和 createStackNavigator 并且同时 navigationOptions 工作时隐藏选项卡项? [英] Is there a way to hide a tab item when using createBottomTabNavigator and createStackNavigator and at the same time navigationOptions working?

问题描述

我有三个屏幕，我只想在前两个屏幕上使用 te 标签栏.在这两个屏幕中，我放置了一个导航到第三个屏幕的按钮.我的第一个方法是代码:

I have three screens, i want to use the te tab bar only for the firsts two screens. In those two screens i put a button that navigate to the third screen. my first aproach was tis code:

import React from "react";
import { Platform } from "react-native";
import {
  createStackNavigator,
  createBottomTabNavigator,
  StackViewTransitionConfigs
} from "react-navigation";

import TabBarIcon from "../components/TabBarIcon";
import HomeScreen from "../screens/HomeScreen";
import LinksScreen from "../screens/LinksScreen";
import SettingsScreen from "../screens/SettingsScreen";

const Tabs = createBottomTabNavigator({
  Home: {
    screen: HomeScreen,
    navigationOptions: ({ navigation }) => ({
      tabBarLabel: "Home",
      title: "Tahiry",
      tabBarIcon: ({ focused }) => (
        <TabBarIcon
          focused={focused}
          name={
            Platform.OS === "ios"
              ? `ios-information-circle${focused ? "" : "-outline"}`
              : "md-information-circle"
          }
        />
      )
    })
  },
  Links: {
    screen: LinksScreen,
    navigationOptions: ({ navigation }) => ({
      tabBarLabel: "Links",
      tabBarIcon: ({ focused }) => (
        <TabBarIcon
          focused={focused}
          name={Platform.OS === "ios" ? "ios-link" : "md-link"}
        />
      )
    })
  }
});

export default createStackNavigator({
  tabs: Tabs,
  Settings: SettingsScreen
});

它正在工作，但navigationOptions"不起作用，所以如果我为标题设置了一个标题(即使我设置了header:null"，它也始终显示)，它不会出现.我用下一个代码尝试了另一种方法，但我无法隐藏第三个选项卡项:

It is working but the "navigationOptions" are not working, so if i set a title to the header ( that is always displayed even if i set "header:null"), it doesn't appear. I tried another approach with the next code but i can no manage to hide the third tab item:

import React from 'react';
import { Platform } from 'react-native';
import { createStackNavigator, createBottomTabNavigator } from 'react-navigation';

import TabBarIcon from '../components/TabBarIcon';
import HomeScreen from '../screens/HomeScreen';
import LinksScreen from '../screens/LinksScreen';
import SettingsScreen from '../screens/SettingsScreen';

const HomeStack = createStackNavigator({
  Home: HomeScreen,
});

HomeStack.navigationOptions = {
  tabBarLabel: 'Home',
  tabBarIcon: ({ focused }) => (
    <TabBarIcon
      focused={focused}
      name={
        Platform.OS === 'ios'
          ? `ios-information-circle${focused ? '' : '-outline'}`
          : 'md-information-circle'
      }
    />
  ),
};

const LinksStack = createStackNavigator({
  Links: LinksScreen,
});

LinksStack.navigationOptions = {
  tabBarLabel: 'Links',
  tabBarIcon: ({ focused }) => (
    <TabBarIcon
      focused={focused}
      name={Platform.OS === 'ios' ? 'ios-link' : 'md-link'}
    />
  ),
};

const SettingsStack = createStackNavigator({
  Settings: SettingsScreen,
});

SettingsStack.navigationOptions = {
  tabBarLabel: 'Settings',
  tabBarIcon: ({ focused }) => (
    <TabBarIcon
      focused={focused}
      name={Platform.OS === 'ios' ? 'ios-options' : 'md-options'}
    />
  ),
};

export default createBottomTabNavigator({
  HomeStack,
  LinksStack,
  SettingsStack,
});

欢迎任何建议.

推荐答案

我终于设法让它工作了.解决方案来自第二种方法.首先，您必须像这样在堆栈中声明您的场景:

I finally manage to make it working. The solution is from the second approach. First you have to declare you sceens in the stacks like this:

const HomeStack = createStackNavigator({
  Home: HomeScreen,
  Details1: DetailsScreen
});

之后你必须单独导入tabBarIcon，我认为这是必要的，因为createStackNavigator没有TabBarIcon方法

Afterwards you have to import the tabBarIcon separately, i think its is necessary because the createStackNavigator has no TabBarIcon method

import TabBarIcon from "../components/TabBarIcon";

您现在可以使用导航和图标，您可以在堆栈中添加任意数量的屏幕.并且您只为堆栈创建选项卡.

You have now navigations and icons working, you can add as many screens as you want in the stacks. and you only create tabs for the stacks.

以下是完整示例:

import React from "react";
import {
  Platform,
  StatusBar,
  StyleSheet,
  View,
  Button,
  Text
} from "react-native";
import {
  createBottomTabNavigator,
  createStackNavigator,
  createAppContainer
} from "react-navigation";
import TabBarIcon from "../components/TabBarIcon";

class DetailsScreen extends React.Component {
  render() {
    return (
      <View style={{ flex: 1, justifyContent: "center", alignItems: "center" }}>
        <Text>Details1!</Text>
      </View>
    );
  }
}

class DetailsScreen2 extends React.Component {
  render() {
    return (
      <View style={{ flex: 1, justifyContent: "center", alignItems: "center" }}>
        <Text>Details2!</Text>
      </View>
    );
  }
}

class HomeScreen extends React.Component {
  render() {
    return (
      <View style={{ flex: 1, justifyContent: "center", alignItems: "center" }}>
        <Text>Home!</Text>
        <Button
          title="Go to Details1"
          onPress={() => this.props.navigation.navigate("Details1")}
        />
      </View>
    );
  }
}

class SettingsScreen extends React.Component {
  render() {
    return (
      <View style={{ flex: 1, justifyContent: "center", alignItems: "center" }}>
        <Text>Settings!</Text>
        <Button
          title="Go to Details2"
          onPress={() => this.props.navigation.navigate("Details2")}
        />
      </View>
    );
  }
}

const HomeStack = createStackNavigator({
  Home: HomeScreen,
  Details1: DetailsScreen
});
HomeStack.navigationOptions = {
  tabBarLabel: "Home",
  tabBarIcon: ({ focused }) => (
    <TabBarIcon
      focused={focused}
      name={
        Platform.OS === "ios"
          ? `ios-information-circle${focused ? "" : "-outline"}`
          : "md-information-circle"
      }
    />
  )
};

const SettingsStack = createStackNavigator({
  Settings: SettingsScreen,
  Details2: DetailsScreen2
});

SettingsStack.navigationOptions = {
  tabBarLabel: "Maison",
  tabBarIcon: ({ focused }) => (
    <TabBarIcon
      focused={focused}
      name={
        Platform.OS === "ios"
          ? `ios-information-circle${focused ? "" : "-outline"}`
          : "md-information-circle"
      }
    />
  )
};

export default createAppContainer(
  createBottomTabNavigator(
    {
      Home: HomeStack,
      Settings: SettingsStack
    },
    {
      /* Other configuration remains unchanged */
    }
  )
);

这是tabBaricon.js的内容

and this is the content of tabBaricon.js

import React from 'react';
import { Icon } from 'expo';

import Colors from '../constants/Colors';

export default class TabBarIcon extends React.Component {
  render() {
    return (
      <Icon.Ionicons
        name={this.props.name}
        size={26}
        style={{ marginBottom: -3 }}
        color={this.props.focused ? Colors.tabIconSelected : Colors.tabIconDefault}
      />
    );
  }
}

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