React Native - Navigation between nested screens - reactjs

I have read the documentation regarding navigation between nested screens for react navigation version 5. However, I still keep running into an issue
Below is the code for my App.js
export default function App() {
return (
<NavigationContainer>
<Provider store={store}>
<Stack.Navigator initialRouteName="Login"
headerMode={'none'}>
<Stack.Screen name="Login" component={Login}></Stack.Screen>
<Stack.Screen name="BottomTabs" component={BottomTabs}></Stack.Screen>
</Stack.Navigator>
</Provider>
</NavigationContainer>
);
}
Below is the code for the "BottomTabs" component: -
export default function BottomTabs() {
return (
<Tab.Navigator initialRouteName="Profile">
<Tab.Screen name="Profile"component={Profile}></Tab.Screen>
<Tab.Screen name="Gobble" component={GobbleNavigator}></Tab.Screen>
<Tab.Screen name="Matches" component={Matches}></Tab.Screen>
<Tab.Screen name="Chats" component={ChatRoom}></Tab.Screen>
</Tab.Navigator>
)
}
In the "Profile" screen, I have a sign out button which, when clicked, executes a function where I call props.navigation.navigate('BottomTabs', {screen: 'Login'}) to go to the login page.
I've tried other things too such as navigation.navigate('BottomTabs', {screen: 'App', params: {screen: 'Login'}) and navigation.navigate('Login')
However, when I click the button, nothing happens.
What am I getting wrong here?

There should be a name associated with each screen.
Assuming the Login screen is known as 'Login', then if you want to click a button to navigate to the Login screen, you should be able to do it as:
<Button title="Signout"
onPress={() =>
this.props.navigation.navigate('Login') }
/>
However, if you are doing a sign-out operation, you should first say removing your current logged in data --- before you get navigated to the login screen.

Related

Error in React Native Bottom Tab Navigation

I'm trying to use BottomTabNavigator in a new project but I am getting an error i had never seen.
This is the error
Error: A 'path' needs to be specified when specifying 'exact: true'. If you don't want this screen in the URL, specify it as empty string, e.g. path: ''.
I use bottom Tab Navigation in few projects and I had never got this strange error, it seems a ReactJS error more than react native
This is my TabNavigator
import React from 'react';
import { View } from 'react-native';
import { NavigatorKeys } from '../screens';
const test = () => <View />;
function TabNavigator() {
const Tab = createBottomTabNavigator();
return (
<Tab.Navigator>
<Tab.Screen name={NavigatorKeys.tab} component={test} />
</Tab.Navigator>
);
}
export default TabNavigator;
and this is the usage:
<Stack.Navigator screenOptions={headerWithAnimationOptions} initialRouteName={NavigatorKeys.tab}>
<Stack.Screen name={NavigatorKeys.tab} component={TabNavigator} />
<Stack.Screen name={ScreenKeys.dashboard} component={Dashboard} options={dashboardOptions} />
<Stack.Screen name={ScreenKeys.noticeBoard} component={NoticeBoard} options={noticeBoardOptions} />
</Stack.Navigator>
do you have any idea what the problem might be? Thanks

React Navigation routes disappear from history on navigate

I have a screen in my app (CameraScreen) that is both in my Tab Navigator and Stack Navigator shown below (there are some more Tab Screens and Stack Screens that I removed for simplicity):
const TabNavigator = () => {
return (
<Tab.Navigator>
<Tab.Screen
name="Camera"
component={CameraScreen}
/>
</Tab.Navigator>
);
};
const Navigation = () => {
return (
<NavigationContainer theme={Theme}>
<Stack.Navigator headerMode="none">
<Stack.Screen name="Camera" component={TabNavigator} />
<Stack.Screen name="Product" component={ProductScreen} />
<Stack.Screen name="CameraStack" component={CameraScreen} />
</Stack.Navigator>
</NavigationContainer>
);
};
Now if I navigate to ProductScreen, then navigate to CameraStack from there and check the navigation state I notice that ProductScreen is nowhere to be found in the routes which I checked using navigation.getState().routes. Thus if I try and use navigation.goBack() it does not go back to the ProductScreen (which would be the expected behaviour).
When I check the routes in ProductScreen, ProductScreen shows up as the last route, however this disappears when I navigate to CameraStack.
I have a hunch that this has to do with the fact that CameraScreen is in both the Tab Navigator and Stack Navigator so for some reason the navigation prop passed to Camera is the Tab Navigator.
For reference my CameraScreen (simplified):
const CameraScreen = ({ navigation, route }) => {
// this doesn't include ProductScreen even if I navigate to CameraStack from the ProductScreen
console.log(navigation.getState().routes);
return (
<View></View>
);
};
and ProductScreen (simplified):
const ProductScreen = ({ navigation }) => {
return (
<View>
<TouchableOpacity
onPress={() => navigation.navigate("CameraStack")}
>
</TouchableOpacity>
</View>
);
};
One idea I can think of to resolve this issue is to manually pass a navigation parameter from ProductScreen but I'm wondering if there is a better way to handle this issue.
I realized this had nothing to do with the fact that I had this screen in both the Tab Navigator and Stack Navigator but was occurring because I was navigating to the same screen using navigation.navigate instead of navigation.push.
The former navigates to the previous location in your stack if you navigate to a screen you've already visited before, but the latter pushes a new route to the navigation state even if it's a screen you've already visited.
Handle backBehavior prop in your Navigator
<Tab.Navigator backBehavior='history'>
<Screen ... />
<Screen ... />
<Tab.Navigator/>
https://reactnavigation.org/docs/bottom-tab-navigator/#backbehavior

React native navigation mode prop usage

I was looking at react navigation 5 docs and saw the example where you learn to make a full screen modal.
https://reactnavigation.org/docs/modal
In the example above they use a root stack navigator with a nested stack navigator and a screen named Modal, our screen modal, but for some reason mode="modal" prop is used in root stack navigator instead of ModalScreen component (our modal will go from bottom to top as it should, mode prop achieves this) but why is it not used in ModalScreen but in RoosStackNavigator
const MainStack = createStackNavigator();
const RootStack = createStackNavigator();
function RootStackScreen() {
return (
<RootStack.Navigator mode="modal">
<RootStack.Screen
name="Main"
component={MainStackScreen}
options={{ headerShown: false }}
/>
<RootStack.Screen name="MyModal" component={ModalScreen} />
</RootStack.Navigator>
);
}
function MainStackScreen() {
return (
<MainStack.Navigator>
<MainStack.Screen name="Home" component={HomeScreen} />
<MainStack.Screen name="Details" component={DetailsScreen} />
</MainStack.Navigator>
);
}

In React Navigation 5 in React Native, HeaderShown: false won't hide header

I've been experimenting in React Native and have noticed the expo init command now brings in a newer base codebase to start from. The issue I'm having is related the header not hiding when we use the headerShown prop in the options of the navigator component.
import * as React from "react";
import { createBottomTabNavigator } from "#react-navigation/bottom-tabs";
import TabBarIcon from "../components/TabBarIcon";
import HomeScreen from "../screens/HomeScreen";
import LinksScreen from "../screens/LinksScreen";
const BottomTab = createBottomTabNavigator();
const INITIAL_ROUTE_NAME = "Home";
export default function BottomTabNavigator({ navigation, route }) {
// navigation.setOptions({
// headerShown: false
// });
return (
<BottomTab.Navigator initialRouteName={INITIAL_ROUTE_NAME}>
<BottomTab.Screen
name="Home"
component={HomeScreen}
options={{
headerShown: false,
tabBarIcon: ({ focused }) => (
<TabBarIcon focused={focused} name="md-code-working" />
)
}}
/>
<BottomTab.Screen
name="Links"
component={LinksScreen}
options={{
headerShown: false,
tabBarIcon: ({ focused }) => (
<TabBarIcon focused={focused} name="md-book" />
)
}}
/>
</BottomTab.Navigator>
);
}
The code above is the different methods I've tried to apply the header shown. I have also tried doing it the older way by creating the static method for navigation options in each of the page components. Neither seems to work, and what's annoying is the docs have suggested applying it to the navigator is the way to use it in this version of react-navigation.
The Home page component looks like so:
export default function HomeScreen() {
return <View style={styles.container}></View>;
}
HomeScreen.navigationOptions = {
headerShown: false
};
And the Links page looks almost identical minus the render function.
For All Screen on this Stack
<LoggedStack.Navigator
screenOptions={{ headerShown: false}} >
<LoggedStack.Screen name='Dash' component={MyDrawer} />
<LoggedStack.Screen name="Login" component={Login} />
</LoggedStack.Navigator>
For Specific Screen
<Drawer.Screen name="Dept" component={DepartMentScreen} options={{ headerShown: false}} />
So as it turns out the new base code creates a stack navigator that references the screen with the bottom tab navigator applying the header shown prop to the stack navigator disabled the headers on the pages
<Stack.Navigator screenOptions={{ headerShown: false }}>

Transition custom header component React Navigation

I am creating a React Native app that's supposed to have a custom header for basically all screens, so I've made a Navbar component that I have set as a default header which works fine. Although when I navigate between screens in the app, the header is not transitioning as it is supposed to be. With a standard header, the old one fades out and the new one in when you navigate to another route in the stack, but mine just replaces itself automatically.
I believe the problem might revolve around that all screens have the "same" Navbar component, that is there is not a new one created for each screen, so when I navigate it just updates the props of the navbar and re-renders it.
Here is the navigator setup
App.js
...
const stackNavigator = createStackNavigator(
{
...
}, {
initialRouteName: "Home",
defaultNavigationOptions: ({ navigation }) => ({
header: (headerProps) => {
return <Navbar navigation={navigation} {...headerProps.scene.descriptor.options} /> //Will pass navigationOptions as props
},
animationEnabled: true
}),
navigationOptions: {
animationEnabled: true,
},
headerTransitionPreset: 'fade-in-place',
transitionConfig: () => {
return {
transitionSpec: {
duration: 2000, //Easier to see the navigation animation
}
}
}
);
The Navbar component is a regular React.Component, along with all other screen components if that makes any difference
Are there some kind of props I should take care of? I have search all over the web, especially on the React Navigation docs and API reference but have found no info.
Here are some examples of how it looks with my custom navbar and how it looks with the default header. Note that the default fades during the whole transition while my custom just switches view in an instance. The only change I made was comment out the header: ... part
Custom
https://imgur.com/PXvm7gA
Default
https://imgur.com/yk3jyr9
If I understood it correctly your header is not navigating with screen? If that is the case use headerMode='screen' According to react-navigation 5.*
<NavigationContainer>
<Stack.Navigator initialRouteName="List" headerMode='screen'>
<Stack.Screen name="Article"
component= { Article }/>
<Stack.Screen name="List"
component= { List }/>
</Stack.Navigator>
</NavigationContainer>
header mode set to screen navigate the header with screen which is common in android where as if you set it to float header will not navigate but changes its content which is common in ios. set it to none if you dont want header.
I'm on react-navigation#5.1.3 and the following works for me (taken from my code):
<Stack.Navigator>
<Stack.Screen
name={"route1"}
component={Route1View}
options={{title: "route 1 title"}}
/>
<Stack.Screen
name={"route2}
component={Route2View}
options={({navigation, route}) =>({
title: "route 2 title",
header: (props) => <CustomHeader {...props} />
})}
/>
</Stack.Navigator>
If you start with route 1, the default header is shown. When you push route 2, the custom header will fade in. When you leave, the default will show once again.
You can specify any component for left and right in the header in the screen configuration, you can have something like this:
createStackNavigator({
home: {
screen: (props) => (
<View style={{flex: 1}}>
</View>
),
navigationOptions: () => ({
title: `Title`,
headerRight: (
<React.Fragment>
<Button title={'First'} />
<Button title={'Second'} />
</React.Fragment>
)
})
},
});

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