How to add two screens when navigating in a React Native app, but not show them in a TabBar?
P粉155551728
2023-08-20 10:44:44
<p>I need the user registration and login interface not to be displayed in the application's <code>TabBar</code>
I have a simple application and I'm trying to have two types of user interface, one is guest mode and one is user authentication mode.
I created a navigation for each <code>authentication</code> condition to display a TabBar for each state of the application, either guest mode or authentication mode. I also have a <code>TabBar</code> component to display the icon for each navigation. </p>
<p>The problem arises when I want to add the <code>LoginScreen</code> and <code>RegisterScreen</code> screens because I don't have access to them. </p>
<p>I tried creating a third <code>Navigation</code> (AuthNavigator) to manage these screens and eventually got access, but they show up on the TabBar,
But this is not allowed, these screens are not accessible from <code>TabBar</code></p>
<p>I need them to be in the navigation, but not displayed on the <code>TabBar</code>. </p>
<p>These screens are not added in the <code>TabBar</code> file, so the <code>Icon</code> is not displayed, but the title</p>
<p>I tried using <code>options={{ tabBarVisible: false }}</code> but it had no effect</p>
<p>Also tried <code>display = "none"</code> without success. </p>
<p>I looked for a solution on Google but didn't find anything. </p>
<p>I would like to demonstrate my navigation system to guide me on what I am doing wrong and how to correct my mistakes.</p>
<p>--------- App.js ---------</p>
<pre class="brush:php;toolbar:false;">import React from 'react'
import { NavigationContainer } from '@react-navigation/native'
import GuestNavigator from './navigation/GuestNavigator'
import AppNavigator from './navigation/AppNavigator'
const App = () => {
const isUserAuthenticated = false;
return (
<NavigationContainer>
{isUserAuthenticated ? (
<AppNavigator />
) : (
<GuestNavigator />
)}
</NavigationContainer>
)
}
export default App</pre>
<p><strong>---这是访客模式的导航---</strong></p>
<p>---- GuestNavigator.JS -------</p>
<pre class="brush:php;toolbar:false;">import { createBottomTabNavigator } from '@react-navigation/bottom-tabs';
import TabBar from '../components/TabBar';
const Tab = createBottomTabNavigator();
const GuestNavigator = ({ handleLogin }) => {
return (
<Tab.Navigator tabBar={props => <TabBar {...props} />}>
<Tab.Screen name="Home" component={HomeScreen} />
<Tab.Screen name="SampleNotas" component={SampleNotasScreen} />
<Tab.Screen name="SampleCuras" component={SampleCurasScreen} />
<Tab.Screen name="SamplePerfil" component={SamplePerfilScreen} />
<Tab.Screen
name="Login"
options={{ tabBarVisible: false }}
children={() => <LoginScreen handleLogin={handleLogin} />}
/>
</Tab.Navigator>
);
};
export default GuestNavigator;</pre>
<p><em><strong>--这是认证模式的导航--</strong></em></p>
<p>------ AppNavigator.JS ---------</p>
<pre class="brush:php;toolbar:false;">import { createBottomTabNavigator } from '@react-navigation/bottom-tabs';
import TabBar from '../components/TabBar';
const Tab = createBottomTabNavigator();
const AppNavigator = () => {
return (
<Tab.Navigator tabBar={props => <TabBar {...props} />}>
<Tab.Screen name="Notas" component={NotasScreen} />
<Tab.Screen name="CrearNota" component={CrearNotaScreen} options={{ tabBarVisible: false }} />
<Tab.Screen name="Curas" component={CurasScreen} />
<Tab.Screen name="Recordatorios" component={RecordatoriosScreen}/>
<Tab.Screen name="Profile" component={ProfileScreen} />
<Tab.Screen name="EditProfile" component={EditarProfileScreen} options={{ tabBarVisible: false }} />
</Tab.Navigator>
);
};
export default AppNavigator</pre>
<p>我还为登录和注册创建了一个导航系统</p>
<p>------- AuthNavigator.js ----------</p>
<pre class="brush:php;toolbar:false;">import React from 'react'
import { NavigationContainer } from '@react-navigation/native'
import { createStackNavigator } from '@react-navigation/stack'
import LoginScreen from '../screens/AuthScreens/LoginScreen'
import RegisterScreen from '../screens/AuthScreens/RegisterScreen'
const Stack = createStackNavigator()
const AuthNavigator = () => {
return (
<NavigationContainer>
<Stack.Navigator>
<Stack.Screen
name="Login"
component={LoginScreen}
options={{
headerShown: false,
}}
/>
<Stack.Screen
name="Register"
component={RegisterScreen}
options={{
title: 'Registro',
}}
/>
</Stack.Navigator>
</NavigationContainer>
)
}
export default AuthNavigator</pre>
<p>当然,如果我从GuestNavigator导航中删除LoginScrein,我会得到错误:</p>
<p><strong>错误:未处理任何导航器的负载为{"name":"Login"}的动作'NAVIGATE'。
是否有名为'Login'的屏幕?
如果您尝试导航到嵌套导航器中的屏幕,请参阅https://reactnavigation.org/docs/nesting-navigators#navigating-to-a-screen-in-a-nested-navigator。
这只是一个开发时的警告,不会在生产中显示。</strong></p>
<p>我还显示了TabBar,尽管它显示了图标,但这些屏幕没有添加。----- TabBar.js -----------</p>
<pre><code>import React from 'react';
import { View, TouchableOpacity, Text } from 'react-native';
import Icon from 'react-native-vector-icons/Ionicons';
const TabBar = ({ state, descriptors, navigation, isUserAuthenticated }) => {
return (
<View style={{ flexDirection: 'row', height: 60, backgroundColor: '#F3F9F5' }}>
{state.routes.map((route, index) => {
const { options } = descriptors[route.key];
const onPress = () => {
const event = navigation.emit({
type: 'tabPress',
target: route.key,
});
if (!event.defaultPrevented) {
navigation.navigate(route.name);
}
};
const isFocused = state.index === index;
const color = isFocused ? '#08A438' : 'black';
let iconName;
if (!isUserAuthenticated) {
// Iconos para el modo invitado
if (route.name === 'Home') {
iconName = 'home';
} else if (route.name === 'SampleNotas') {
iconName = 'list';
} else if (route.name === 'SampleCuras') {
iconName = 'medkit';
} else if (route.name === 'SamplePerfil') {
iconName = 'person';
}
} else {
// Iconos para el modo autenticado
if (route.name === 'Notas') {
iconName = 'notes';
} else if (route.name === 'Curas') {
iconName = 'medkit';
} else if (route.name === 'Recordatorios') {
iconName = 'alarm';
} else if (route.name === 'Profile') {
iconName = 'person';
}
}
return (
<TouchableOpacity
key={index}
onPress={onPress}
style={{ flex: 1, alignItems: 'center', justifyContent: 'center' }}
>
<</code></pre>
To resolve this issue, add the Guestnavigator to the AuthNavigator like this:
Refactor
App.js
to:And don't forget to remove the login tab from
GuestNavigator
.