How can I show a splash screen in React Native with React Native Navigation while loading app Redux state? - react-native

I am trying to integrate React Native Navigation by Wix into my application and am not sure how to go about setting things up to handle a loading phase.
The library has a splash screen at the native layer but that is only displayed while the bundle is being parsed. Once that is complete and React Native takes over, I then rehydrate my Redux store (from Redux-Persist), make a couple checks, call out to an API to validate a token, and redirect the user to the proper screen. While all of this is happening, I want to display a loading screen but have no idea how to go about it using this library.
I don't want to show my app or let the user use the app until all of the loading and checks have completed.
Is this possible with this library? If so, how do I set it up? My navigation is tab based, no side drawer.

There're 2 options for you:
1. Call Navigation.startSingleApp with the only screen is "Loading Screen" when app start. At that time, you call rehydrate redux. When the call back invoked, you call Navigation.start (single or tab) to your main screen
2. Design the registerScreen with route "Loading" for loading screen. When app start, call Navigation.startSingleApp for the loading screen. On "componentDidMount" of loading screen, call rehydrate redux, when call back invoke, push to Main screen

Related

React navigation modals on react native web - Prevent url path update

I have a react native app that we are implementing the react native web version using: React native web, the app uses the latests react native navigation library.
So far, mostly everything is working except for modals, the problem that i have is that when i open a modal, the URL path on web updates (I.E: from /signup if i open a modal it switch to /legalAgreementModal?QUERY_PARAMS....), so if i refresh the page the modal works but i can't close the modal anymore. I thought about adding a conditional on the modal to goBack if there is anything to go back to, but the problem is that i have too many modals that can go back to different screens so it will be a huge change if i have to add that logic to every modal.
My question is, is there a way to avoid modals to update my path? So if user refresh they lost the modal but they are on the original screen? Perhaps another workaround that you guys may know could help also!.
Thanks!
I tried adding a conditional on modal close action, adding empty string as the modal path.

Why React native navigation loads all components at the same time?

I am using react native navigation v2 by wix. I have a welcome screen with login screen and register. I start the startAuth.js from App.js. There are two tabs with login and register.
But as soon as app starts the componentWillMount methods runs in the register screen but yet i am at login tab.
Why is this happening?
react-native-navigation's Tab does not support lazy loading. But there are two special lifecyle functions where you can put your logic when component appear or disappear on screen
componentDidAppear(): called each time this component appears on screen
componentDidDisappear(): called each time this component disappears from screen
https://wix.github.io/react-native-navigation/docs/screen-lifecycle
There is also a discussion about topic https://github.com/wix/react-native-navigation/issues/1250

How to insert new scene on pop stack in react native?

I am working on existing react native project and I want to find solution for pop action on navigation stack where I want to introduce new scene which is actually not on stack.
I have three different type of route based on state of user logged In, logged out or in locked state. So while user's app state is locked at that time on launch I am directing user to reset account page from launch scene.
Launch Scene -> Reset Account
But on back event of Reset Account, I want to show login page instead of Launch scene, but Login scene is not in stack as of now.
So how to insert new scene when user performs pop action ?
I am new to react native and I don't know how to modify navigation stack programmatically without performing any animation ?
In my project there is one package named react-native-router-flux to handle react navigation.
Any insight will be helpful.
I suggest you create a SwitchNavigator between LaunchScreen and AccountStack
AccountStack is a StackNavigator that render both:
LoginScreen.
ResetAccountScreen. << This would be your initialRoute.

React Native stop WebView reloading when app comes to foreground

I'm working on a React Native app that uses a WebView as the app's main screen.
When the app comes from the background to the foreground the WebView reloads. How can I stop this reloading?
This answer suggests loading the WebView in ViewDidLoad() rather than in ViewDidAppear() or ViewWillAppear(). Is this a real solution and how can I confirm, or change, how the WebView is loaded by React Native?
As a hacky solution I'm using onNavigationStateChange to save the current URL in AsyncStorage and then load this URL when the app comes to the foreground. This solution isn't great because it:
Breaks the browser history, affecting javascript back buttons
Doesn't remember form state
Might send the user to a page they can't directly access, resulting in them being sent to a 404
So I'd much prefer a solution that stops the reloading, at least for situations when the app is only momentarily in the background.
This was not and issue with the WebView. The reloading was caused by my misuse of the React Navigation SwitchNavigator. As mentioned in the docs a SwitchNavigator
resets routes to their default state when you switch away
This reset caused the WebView to reload.

cread custom splash / launch screen using an animated svg

I am trying to add an animated SVG as an application loader in a React native app. Their docs don't offer any solution on how I could approach this.
Back when I was working on a react native project, we had used a simple method to achieve splash screen effect.
We had called setTimeout() in componentDidMount() to navigate to the home-screen after 2 seconds. Also, we used to check whether the user is logged-in. If so, we'd navigate straight to the home screen skipping the annoying splash screen altogether.