I use React Navigation for moving the screen.
I set stack screen like this:
<Stack.Screen name="camera" component={Opencamera} options={{headerShow: false}} />
<Stack.Screen name="previewpic" component={Previewpic} options={{headerShow: true}} />
so when I navigate 'camera' to 'previewpic' I can, but process in camera is running. (This issue only occurs on ios devices.)
I need to moving to previewpic screen without camera screen running.
thank you.
Option 1:
Use the unmountOnBlur property, this will unmount the screen when the route changes;
<Stack.Screen name="camera" component={Opencamera} options={{headerShow: false, unmountOnBlur: true}} />
<Stack.Screen name="previewpic" component={Previewpic} options={{headerShow: true}} />
Option 2:
useIsFocused hook:
import { useIsFocused } from '#react-navigation/native';
....
// This hook returns `true` if the screen is focused, `false` otherwise
const isFocused = useIsFocused();
return (isFocused && <Camera />)
....
Related
I'm looking at using React-Native and Expo to build a web app. The only real issue I'm running into is allowing the use of the browser back button. I'm currently using #react-navigation/native to navigate between screens.
Unfortunately, when changing screens, the browser doesn't seem to register this as a change of page and so the browser back button never works. I could certainly use the standard back button used within the app to navigate back but I'd like people to be able to use the browser back button as that's more intuitive. I'm using the following in my App.js:
import { NavigationContainer } from '#react-navigation/native';
import { createNativeStackNavigator } from '#react-navigation/native-stack';
const Stack = createNativeStackNavigator();
const App = () => {
...
return (
<NavigationContainer>
<Stack.Navigator>
<Stack.Screen
name="Home"
component={HomeScreen}
options={{ headerShown: false }}
/>
<Stack.Screen
name="Settings"
component={SettingsScreen}
options={{ headerShown: false }}
/>
</Stack.Navigator>
</NavigationContainer>
)
};
export default () => {
return (
<App />
);
};
So, is it possible using Expo and React-Native to allow the use of the browser back button for apps built for the web?
I'm using React Navigation 6.x's linking with Expo so that when a user clicks on a notification they are directed to the appropriate part of my application to interact with the new information. When my app is backgrounded (running in the background) and a user clicks on a notification they are redirected to the screen they need to be at, which works perfectly fine. However, when the app is killed and the user clicks on a notification, they are taken directly to the screen for which the url is provided and they cannot press back to navigate elsewhere in my application. I tried to resolve this by using the initialRouteName prop like is shown in the docs (link: https://reactnavigation.org/docs/configuring-links/#rendering-an-initial-route), but I cannot get it to work. For further clarification, when I mentioned above that I am able to get linking working it is in relation to the direct SettingsScreen, AddFriendScreen, and MessagingScreen links. What I cannot get working is the specific block of code inside the liking object that starts with HomeScreen. What I believe may be causing the issue is that I am trying to set my initialRoute as a screen within HomeScreen's Tabs.Navigator and then trying to route to a screen within my Stack.Navigator. However, the docs show that this is possible (link: https://reactnavigation.org/docs/configuring-links/#rendering-an-initial-route).
My code:
const linking = {
prefixes: [prefix],
config: {
screens: {
HomeScreen: {
initialRouteName: "Chats",
screens: {
AddFriendScreen: "addFriend",
CreateChatScreen: "createChatScreen",
Friends: "friends",
MessagingScreen: 'messagingScreen/:chatRoomId'
}
},
SettingsScreen: "SettingsScreen",
AddFriendScreen: "AddFriendScreen",
MessagingScreen: 'MessagingScreen/:chatRoomId'
},
}
};
<NavigationContainer linking={linking} theme={MyTheme} >
<Stack.Navigator>
{!authState.value ?
<>
<Stack.Screen name="LoginScreen" component={LoginScreen} />
<Stack.Screen name="SignUpScreen" component={SignUpScreen} />
<Stack.Screen name="ForgotPasswordScreen" component={ForgotPasswordScreen} />
</>
:
<>
<Stack.Screen name="HomeScreen" component={HomeScreen} />
<Stack.Screen name="MessagingScreen" component={MessagingScreen} />
<Stack.Screen name="SettingsScreen" component={SettingsScreen} />
<Stack.Screen name="CreateChatScreen" component={CreateChatScreen} />
<Stack.Screen name="AddFriendScreen" component={AddFriendScreen} />
</>
}
</Stack.Navigator>
</NavigationContainer>
const HomeScreen = () => {
return (
<Tabs.Navigator>
<Tabs.Screen name="Chats" component={ChatScreen} />
<Tabs.Screen name="Friends" component={FriendsScreen} />
<Tabs.Screen name="Profile" component={ProfileScreen} />
</Tabs.Navigator>
)
}
Hmm, I would put any screen that I would like to access in multiple navigators at the root level so that they can both reach it.
For my own project, I have a root stack with a dedicated auth stack and an app/home stack (which is a tab nav like your HomeScreen). And outside that I have all my modal and root screens that I'd like other navigators to access (Because I really have two Home tab navigators the user can switch between.)
Idk if putting all of your screens listed after HomeScreen outside of that object will help your situation, but you can try that.
I am building a React Native project with Expo. For navigation, I am using react-navigation 6.0 with the following code for my main component:
export default class App extends Component {
render() {
return (
<NavigationContainer>
<Stack.Navigator initialRouteName={'SignIn'} screenOptions={{
headerShown: false
}}>
<Stack.Screen name="SignIn" component={SigninScr} />
<Stack.Screen name="SignUp" component={SignupScr} />
<Stack.Screen name="EmailVerification" component={EmailVerificationScr} />
</Stack.Navigator>
</NavigationContainer>
);
}
}
This works fine, but I haven't been able to make Stack.Navigator cover the entire screen. There is a weird area that's not covered by the Stack.Navigator:
I was reading through some of the documentation about stack navigator, but couldn't find any props or styling to force it to cover 100% of the screen. Does anyone know how to accomplish this?
For some reason I can see the elements when run on web (using Expo) and they render perfectly when I click "Run in web browser".
However when I try to do it on iOS or Android, it just shows a blank screen and only shows the LinearGradient.
When I run the Android Emulator and combine it with the React Native Dev tool, I can see the elements in the devtool but they dont show up in the emulator. The component I try to render is called Login.tsx and If i copy all the content in Login.tsx to my App.tsx it renders perfectly on Web, Android and iOS.
What am I doing wrong?
const Stack = createNativeStackNavigator();
const Navigation: React.FC = () => {
return (
<NavigationContainer>
<Stack.Navigator
initialRouteName="Login"
>
<Stack.Screen
name="Login"
component={Login}
/>
<Stack.Screen
name="LostPassword"
component={LostPassword}
/>
<Stack.Screen
name="Register"
component={Register}
/>
</Stack.Navigator>
</NavigationContainer>)
}
export default Navigation;
const App: React.FC = () => {
return (
<LinearGradient
colors={["#2D1C96", '#190E60']}
style={styles.linearGradient}
>
<View style={styles.container}>
<Navigation />
<Toast ref={(ref) => Toast.setRef(ref)} />
</View>
</LinearGradient>
);
}
Solved it.
For anyone facing the same issue:
NavigationContainer should not be inside View. It should be used as a root component
I am using React-Navigation v 5.0.1, I have a Drawer navigator nested inside Stack navigator that looks like this:
MainStack.js
function MainStack() {
return(
<Stack.Navigator>
<Stack.Screen name="Splash" component={Splash} />
<Stack.Screen name="Login" component={Login} />
<Stack.Screen name="HomeDrawerStack" component={HomeDrawerStack} />
</Stack.Navigator>
)
}
HomeDrawerStack.js
function HomeDrawerStack() {
return (
<Drawer.Navigator>
<Drawer.Screen name="Home" component={Home} />
</Drawer.Navigator>
)
}
When I tap a logout button on Home screen, how do I navigate to Login screen and reset / clear all other screens? (so it triggers the componentWillUnmount on other screens)
This code will navigate to Login Screen after clearing the stack. so that back button or back swipe will not work to navigate to HomeDrawerStack
navigation.reset({
index: 0,
routes: [{ name: "Login" }],
});
if I share how I handled it, it is like, I am sharing my code snippet as png here, so what I have done is appended Navigator with redux, and I use to change my stack or replace my stack by dispatching event to store attached to Navigator.