WelcomePage | Android library

I'm currently using stack navigation on my app, but I decided to increment a Drawer for a user's menu.

I managed to insert the Drawer in my pages, but some of them are a MapView content, so the user can't really drag the menu from the screen... So I decided to implement a button to call the ToggleDrawer function, which is presented in the documentation. But I'm getting the error:

TypeError: navigation.ToggleDrawer is not a function. (In 'navigation.ToggleDrawer()', 'navigation.ToggleDrawer' is undefined)

Here is my map screen where I'm trying to insert the button in like this:

i'm currently using a stack Navigation on my app, but i want to add a Drawer menu to it. When i try to add i get a conflict issue with the current Navigation Container on my app.

Where shoud i put the Drawer? On my App.tsx, in my routes.ts? or use it like a component?

Here is my app.tsx:

This should be a pretty easy fix. I'm new to Kivy. I'm trying to have the canvas cleared on a button press, and then display a new widget to essentially move to another page. When I run it and press the button, the canvas is cleared, but I get nothing from IntroPage.

Python Script:

How to save the boolean value as true to database also route to another page. While we press continue button to save True value to db using django model also route to another page as welcome page.

A social media-type application that I'm developing allows the user to select a unique username upon signup, the only issue is that the app handles username novelty verification client side. That is to say that the app retrieves all usernames from the relevant collection, and checks whether or not the requested username already exists within that list.

Unfortunately, with the way my firebase security rules are set up (please see below), the user must first exist before this aforementioned 'username novelty verification' can take place.

This means that no matter if the username is unique or not, the user is given an account under their desired email address first. This results in accounts being setup that have failed this verification, and have a subsequently null username field.

I understand that handling username verification client-side is inefficient at best, and dirty at worst, so if you could suggest any 'Firebase-side' verification methods, perhaps using Firebase 'Functions', that would be awesome.

Thanks

Firebase security rules:

I have 3 components, WelcomePage, RegisterPage, HeaderLogOut.

I want that when user is on RegisterPage to hide that HeaderLogOut component. In RegisterPage user can click to logo icon of the app and will be redirected to WelcomePage and it will have HeaderLogOut component, which can redirect user back to RegisterPage.

I have seen similar questions and articles that show how this is done. But my problem is that for example, when I am on WelcomePage and I click to login, RegisterPage page has the HeaderLogOut and only after I refresh the page it disappears. Same with WelcomePage, when I am on RegistrationPage and I click the logo of the app, it redirects me to WelcomePage, and I have no HeaderLogOut, only after refresh it appears. I have had multiple attempts but I do not understand why it does not render the components immediately without a hard refresh.

For routing I use useHistory from react-router-dom hook.

I'm currently developing an apps in Flutter (dart) and facing some problem here.

I'm trying to make a button from a single file so I don't have to copy and paste the code everytime I need to make a button (instead, I just need to call the file I created and pass some arguments into it).

Here's the button file I created:

I have some code:

Mp3 file is working fine. But navigation to next page is not working. and also in audiocache no stop method. The page should load the logo with music and navigate to the next page.

Navigation is working but how to move to the next page. initstate is not working.