navit | open source turn-by-turn navigation software | Map library

I using the navigation drawer with the new component NavController, I have seven fragments each fragment represent navition drawer menu item

I need to access some view components in each fragment like Recyclerview and Adapter from MainActivity to use it on onOptionsItemSelected like this

I want to use platform channel to change UI(ui.image) to update modified image faster(my app have delay with this).
Is it able to change UI with platform channel?
If it is, how can I specify changing ui and apply change to platform channel?

EDIT

I want to pass bytedata and show it through navite imageview

I have an app that list incidents of a animals charity ong.

After the login, the ong is directed to your incidents list, so i must pass your ID of login page to load this list.

I'm trying to load the variables of AsyncStorage in a function and then pass it to a callback that load the incidents list in React useEffect.

Code:

Is it possible to use (with Codename One) the native password manager to store or to get the user password?

My use case: see this screenshot of the iOS Teachable app, in the virtual keyboard there is a key icon to access the iPhone password manager (that uses the FaceID in the case of iPhone X). I know how to do a login form using a TextModeLayout, but I don’t know how to get this navite password management functionality.

In React Navite, I am saving an array of values from Firebase and rendering Views for each value. I cannot the values from inside the render() function. There is no exception on any trouble, the array is just empty from within render(). I don't think this is normal behaviour, can this be fixed?

Here is my code:

There is a document that have footer and header! when i use onlyoffice preview it、this document footer and header lost and Typesetting（Line spacing is compressed） is different from office navite software！ Someone knows how to solve it？

i have created an application from create-react-app and it works well. When I added react-navitation I got this error:

This might be a noobish question, but although I read the documentation and other sources, I still did not figure out how to implement two or more additional, clickable icons in the header within a StackNavigator, just like in the picture. If the stackNavigator wants to show a back-icon, he is allowed to overwrite the menu-icon.

This is how the (root) home-screen could look like. Once the user starts clicking on the content, the menu-item should be replaced with the back-button from the stackNavigator (ideally on any platform).

What I did so far: I started from a brand-new template by choosing the options tabs when running expo init. I did some minor modifications in the file MainTabNavigator.js

My HTML page has a header, navigation bar, body content element and a footer element however the footer element is overlapping with the div element bodycontent when it should be below the bodycontent element and at the bottom of the page. Please suggest any changes in positioning to resolve this.