InfiniteScroll | Infinite Scroll | RecyclerView library
kandi X-RAY | InfiniteScroll Summary
kandi X-RAY | InfiniteScroll Summary
Infinite Scroll (Endless Scrolling) for RecyclerView in Android. JavaDoc is available at:
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Top functions reviewed by kandi - BETA
- Initializes the view
- Creates and returns a listener which allows to observe when the page has been initialized
- Creates a list of available items
- Get the list of items to be loaded
- Simulate the loading process
- Initialize recyclerView
- Initialize the views
- Refresh a RecyclerView
- Gets the list of items currently displayed
- Callback method to be called when the RecyclerView has been scrolled
- Checks if more items can be loaded
- Invoked when the view is created
- Set the item text at the specified position
- Returns the number of items in the data store
InfiniteScroll Key Features
InfiniteScroll Examples and Code Snippets
Community Discussions
Trending Discussions on InfiniteScroll
QUESTION
I have two different react components placed one after the other in my app named SearchBar and InfiniteScroller;
...ANSWER
Answered 2022-Mar-30 at 16:01The props' change does not make the UI re-rendering but the states' change does. It has 2 potential ways to fix have a proper UI re-rendering.
For the first one, you can add key
attribute to your component that will help you do a trick for re-rendering whenever key
gets changed
QUESTION
I am facing a problem with re-rendering after a state change in my NextJS app.
The function sendMessageForm
launches a redux action sendMessage
which adds the message to the state.
The problem is unrelated to the returned state in the reducer as I am returning a new object(return {...state}
) which should trigger the re-render!
Is there anything that might block the re-render ?
This is the file that calls & displays the state, so no other file should be responsible ! But if you believe the problem might lie somewhere else, please do mention !
ANSWER
Answered 2022-Mar-20 at 00:49useSelector
requires a new object with a new reference from the object you are passing to it in order to trigger the re-render
What you're doing with return {...state}
is just creating a new object for the parent object but not the nested one useSelector
is using, which is in your case :
const messages = useSelector((state)=> state.chat[roomId].messages)
So, you should return the whole state as a new object WITH a new state.chat[roomId].messages
object
In other words, the references for the root object & the one being used should be changed.
QUESTION
I have a function newsFeed
which is called by useEffect and makes a request to an endpoint to fetch all posts made by the logged in user as well as any users they follow, and then saves the data response to the state:
ANSWER
Answered 2022-Mar-08 at 21:28Your issue appears to be that your backend is returning all records every time you call it, since there are no parameters being passed on to it:
QUESTION
What is up, guys? I have an array of objects, I have Grid container, I map through array and render Grid items. Everything is ok, except all Grid cards get rendered at the same time and I have a long list. So, I decided to add infiniteScroll component. But still all cards got rendered at the same time. Here's what I return outta my component:
...ANSWER
Answered 2022-Feb-05 at 11:28There's not that much information about InfiniteScroll + MUI grid system, but finally I'm able to make it work. I've left codesanbox sample for you here. Not that beautiful, but it will give an idea how to implement it.
QUESTION
The problem
Basically I have a mobile website that has some videos. Each video takes 100% width and 100% height. I'm trying to make a scroll snap type feed, where the user can scroll only 1 video at a time and if they reach a certain point on the page while scrolling, it will snap to the next video. It's kinda like tiktok's video feed or instagram reels as an idea.
I'm using the scroll-snap package which kinda gets my half way to what I'm trying to achieve. It snaps when scrolling slowly, however if I was on mobile, I can just scroll really fast and allow the scroll momentum to skip videos. I'm trying to make it so the user is only able to scroll 1 video at a time no matter how hard they scroll.
Here is what's happening: https://streamable.com/f98slq. As you can see, I'm able to scroll past more than 1 video at a time.
What I've tried
I tried to get the scroll velocity when scrolling the feed. If it's higher than a certain value, I would apply a style that stops the page scroll for 10ms. This didn't really work though as the scroll momentum was able to scroll the page even if the scroll velocity wasn't high. I don't really like this solution though.
I'm not really sure the best way to approach this problem. Any feedback would be appreciated.
This is my code:
...ANSWER
Answered 2022-Feb-01 at 05:20A strategy would be to check the position of certain elements passes through a range that triggers a scroll freeze.
So on scroll, if the scrolled pixels amount is more or less close to the position of one of those elements, you can freeze it for a certain time.
Four things here, before we go to my demo:
- How to freeze the scroll?
- Why a range?
- When to unfreeze it?
- Some considerations...
Quite simple... You can set the scrollTop
to a fixed value at each scroll event.
QUESTION
I am trying to implement with the help of this library react-infinite-scroll-component (documentation) to do an infite scroll, my idea is to have the infinite scroll at the top.
I am using the live demo(code sample) provided by this library, but I am unable to implement the infinite scroll at the top, I don't know what I am doing wrong.
In the library they mention this to achieve this:
Using scroll on top
...ANSWER
Answered 2022-Jan-24 at 06:27Try below code it's working !
QUESTION
I have tried to do an infinite scroll by using React-Infinite-Scroll-Component
Everything is working perfectly as I think, but the problem is whenever I change the Genres, or press F5 to reload the page, or somehow, the scrollbar is always at the very bottom, I did try to fix it with window.scrollTo(0,0)
but it's still not working.
Or somehow do I mess up the code because I tried to work around it very hard, but I don't think I execute it well enough.
The code is very long but here's a brief explanation of what I'm trying to do in it.
I received a slug which defined as a genre
with useParams
, for example action
or adventure
, then I set it as a state genreAnime
, then I check if it's the same genre, it'll do the infinite load with concat array
and increase the page up to 1 for the next load, else I'll set a new array
and initial the page back to 1 or else it'll keep merging with an old array of previous genre
. The totalPage
is set to 91, whenever it renders for the second time it'll automatically get the latest totalPage
and set it back, so it's safe to go.
The translateGenre
is just for translating the genre into text, so please don't bother it.
But then whenever I refresh (F5) or whenever I browse for a bit, then I change the genre, it'll get a duplicate of the same first array
(due to warning and I see it has 2 same items). Due to the scrollbar of mine always staying at the "end" or at the default
value of React-Infinite-Scroll-Component, which is 0.8, it means when users come below 80% of the total height, it'll trigger the next
function of Infinite-Scroll-Component
Here's my code:
...ANSWER
Answered 2022-Jan-26 at 05:15I think I got it right, but not so sure, it's working fine, "for now".
This is what I do.
Instead of
QUESTION
I am creating an React project where i am rendering the data by calling the api, and api every time gives me array of data of length 10. i am using react-infinite-scroll-component for using infinite scrolling functionality. i want to load data everytime whenever i scroll at the half part of the screen i don't want to show a loader on my screen. can anybody help me on it.
...ANSWER
Answered 2022-Jan-04 at 11:58I think you may want to use the scrollThreshold
property as that defines when next will be called.
You can pass a floating point number e.g 0.5 or a string e.g "200px" in order to define this.
If you are looking to remove the loader just omit that prop.
Sourced from list of props here: https://www.npmjs.com/package/react-infinite-scroll-component
QUESTION
I am implementing a chat view in React
,and the desired behavior is that whenever new data is pushed into the dataSource
, the chat view (an infinite list) scrolls to the bottom, there are many implementations, some found here: How to scroll to bottom in react?. However when I try to implement it, I am getting this strange behavior where all the views in the window are "pushed upward" out of sight by some 300px, as if to accomadate this new
ANSWER
Answered 2022-Jan-03 at 15:18The issue has been resolved. The source of the issue is the scrollIntoView
function, it's scrolling the entire page instead of just the listView
, here's the correct scrollIntoView
function with the correct parameters:
QUESTION
I am using IntersectionObserver
api for implementing infinite scroll. When callback is called ,then inside the callback
,redux state does not have updated value.The functions are:
ANSWER
Answered 2022-Jan-03 at 06:43The purpose of using a useCallback
is to avoid unnecessary function invocation every time when a parent component or self is re-rendered, this is achieved by returning a memorized version of the callback function, that is invoked only when the state or reference value in the dependency array change. The function inside the useCallback
is executed only once when the component is initially mounted with initial state values.
Hence, it is returning undefined
. You'd want it to execute again when the state is updated (i.e invoke the function when the state is updated to contain more comments in this case). You can accomplish this by simply including the state in the dependency array of your useCallback
hook.
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