halcyon | Halcyon 3d virtual reality world simulator | Augmented Reality library

I need to add a header above the RecyclerView in my app. the header must move as the user scrolls the recyclerview (right figure). I have already searched but have not found a final straightforward solution. what is the best and easiest way to implement it?

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Recently Added Firebase-Firestore to my android project and while building started getting Duplicate references to classes in the protobuf.

build.gradle

I am trying to build this UI for browser screen got stuck in one part for a long time and couldn't find any relevant topic on the web. I want to implement UC browser settings/hamburger menu that popup as dialog. How do I get started on this thing

images link contain-2 images

Just found one link somewhat loosely related to it. I am confused, Please help me out. I did implement the bottom navigation bar Just want that popup view/menu to appear

I am trying to form submit in Django with multiple details so I have decided to separate have the next button and the first set of details will be hidden and the next set will be displayed and the form submission will happen in the last set of details. I have finished the code and placed the tag on the beginning and the closing tag at the bottom. But the form was not submitting. It was not showing any error. When I click the button nothing happened

In layout, checking page property with is defined produces an error like "Call to undefined method October\Rain\Halcyon\Builder::meta_description()", when page does not define the property. I expect the test to be false instead of throwing an exception.

I have layout like below checking if this.page.meta_description is defined.

I copy/pasted this code to my Nuxt.js app where I use Vuetify into a component file where only tag wraps it:

Trying to add a form field with type fileupload and mode image to a certain page using a plugin in OctoberCMS backend but getting an error. Text, dropdown, etc types work fine.

When I set the field's name to viewBag[photo] I get the error "Call to a member function hasRelation() on array" on line 81 of [path]/public/modules/backend/traits/FormModelWidget.php".

And when I set the name to just photo I get "Call to undefined method October\Rain\Halcyon\Builder::hasRelation()" on line 786 of [path]/public/vendor/october/rain/src/Halcyon/Builder.php".

I'm trying to write some tests for an October CMS plugin's custom routes using PHPUnit, but running into some errors getting the tests to run correctly.

Each test passes when run individually, but when run as a group, the first test will pass and the rest fail with 500 errors. The error message for the failing tests is:

I need some help for my application and sorry for my English.

I'm working on front-end of a website. The final app should work fine with a lot of tabs (~100 in a single browser). Each tab needs to listen for a series of events sent from server and change its content dynamically.

I implemented this feature by using Websocket. Since opening a connection is very expensive. So I assigned a master tab, which will listen to events from the server and distribute them to other tabs using BroadcastChannel. And I have following questions：

How to pick a master tab from all of them and make other tabs listen to it?

I had these ideas:

During initilization tab asks using BroadcastChannel: "is there a master tab?". If it receives an answer, then it will continue working. If it won't receive any response, then it makes itself a master tab.

Problem:

If master tab will freeze inside of heavy loop, then it won't be able to respond in short amount of time, resulting 2 opened connections to the server and a conflict, which needs to be resolved.

During initilization tab will request some field called "X" or smth. If field is empty, then tab will create that field and assign some value, after it will make itself a master tab. If field "X" is not empty, then tab will make itself a slave tab.

Problem:

If two tabs will initilize in the same time, there might be a conflict: