Flatlist onendreached not working

onEndReached is called as the FlatList is loaded without any interaction from the end user. On 0. 63. It Mar 18, 2023 · onEndReached should technically be called when data is empty. The only problem for the methods of the virtualized Lists is, that if it is nested inside another Virtualized List or ScrollView these methods will not be triggered. If not it will trigger the onEndReached method because the initial list render is empty. Apr 18, 2019 · 4. I am implementing a simple feature that when user swipe the screen to the end of the list, the app sends a new request to get more items to the list from backend. Description. So I see issue with onEndReached , it is invoking on load. If you are talking about UI performance you need to check the options initialNumToRender Jan 10, 2023 · You can use onEndReachedThreshold which you also used in your VIDEO_FEED_FLATLIST_OPTIONS object. const VIDEO_FEED_FLATLIST_OPTIONS = { removeClippedSubviews: true, // views that are outside of the viewport are detached from the native view hierarchy windowSize: 3, // measurement unit where 1 is equivalent to your viewport height Jul 4, 2022 · Component: FlatList Needs: Author Feedback Needs: Issue Template This issue does not make use of the Issue Template, and may be missing necessary information. Below I have shown an example of the result I want to achieve: . . answered Jan 22, 2019 at 15:55. Feb 3, 2010 · onEndReachedThreshold not working correctly as Doc say 0. The higher the number, the quicker onEndReached is called. Therefore a value of 0. Assignees. The smaller the threshold, the smaller the distance from the bottom, hence the more below the scrolling will trigger onEndReached . y to compare to the height of content of first items. So I implemented onEndReached(). Jul 28, 2018 · This happens because you render the FlatList before your data is loaded. If i put the ListView within KeyboardAwareScrollView then onEndReached not called properly. 72: Same thing, onEndReached was sometimes not firing, sometimes it changed behavior after navigating to the screen in a different way than before. the flatList only displays the first 10 of the Select but i have a lot more in it. This is my render code Nov 16, 2019 · Expected Behaviour: On end of page arrival the handleLoadMore function should be get called. Sep 22, 2017 · I have same problem with react-native 0. Pagination is mostly about API support and optimization working with a network. I have an article view with a body. Centering the initial coordinate (00) in the center (from the picture with an example it will be clear what I mean). no scrolling), hence, onEndReached won't be called. Sep 24, 2018 · As soon as list is rendered onEndReached is being called without even scrolling the list. Nov 24, 2020 · i currently have a FlatList in my React Native project that renders the posts from nodejs backend. I notice that it works fine if I have only one column. onEndReached takes a callback that will be run May 30, 2018 · This may be just the problem of not putting {flex:1} in the outtermost container view. Reproduction. userPicture. 4. I use this scrollview because I have 3 flat lists in my application. Oct 30, 2018 · I have read that it is not recommended to use ScrollView as a parent wrapper . So in my FlatList component I entered this: Im trying to implement Flatlist of Somedata which contains almost 200 elements in an array that im passing in data. I'm calling the this. id}) const data = await PictureService. With this settings, I was able to get onEndReached called once and only after I scroll near the bottom. My flatlist has three columns, the "onEndReached" props is only called two times when the flatlist is loaded, but never again when I scroll to the end. props; c See full list on reactnative. After more data is loaded, turn showSpinner to false and the footer should disappear. 69 to 0. But it called at start when I scroll not when I reached at the end of list. const AnimatedFlatList = useMemo( () => Animated. Aug 30, 2022 · yeah onEndReached should not be called when flatlist is rendered what i generally do is use isLoading flag inside onEndReached so it fires the api only if !isLoading. I don't currently have time to figure out how to fix this. Actual Behavior. But that didn't work for me. I have an article screen, i want to load comments when user reaches the end of article body. const handlePreviousPage = () => {. I want to use this logic later in infinite scroll Jun 28, 2019 · Sometimes things don't work like they are supposed to, at the end of the day it's not native code where, so may the order of your components or the fact that the Flatlist is encapsulated in a component that is not intended to be, or there is some property should be passed to the Flatlist component itself to activate the onEndReached callback properly. 5. 1. Im fetching dummy data from an action but my pagination is not acting as expected, it's rendering everything instantly when I'm using onEndReached. log and still not working. The real issue I'm facing is when I'm trying to render chat messages (fetching through API call and setting it inside the state) inside a FlatList. With onEndReachedThreshold set to 0. Im trying to give user the option to load the rest when they scroll only. This is problem. currently for masonry-list onEndReached is fired only when content is very close to the screen end, so if let say i am doing pagination for an api with 4 items per page api fires first time but those 4 item don't cover the whole Jan 22, 2019 · initialNumToRender is used to render on the first time of FlatList, It is usually used when you have to load the component faster. Here is my FlatList: @CallMeHeisenberg @jkadamczyk I also managed to work around this by memoizing the animated flatlist. I want to load the comments when user reaches the end of article body, and onEndReached should only trigger when Jun 3, 2017 · I think this is not a bug. I have pasted my module return below. stickyHeaderIndices={[0]}: This prop would set the FlatList 0 index position item as sticky header and as you can see we have already added the header to FlatList so the header is now on 0 index position, so it will by default make the header as sticky. P. 59. For more information you can visit docs. More complex, multi-select example demonstrating `` usage for perf optimization and avoiding bugs. Once the flatlist reaches the end ie, no more data is returned from the server, it goes into an endless loop since the onEndReached continuously fires over and over again even though no new data is returned from the server and this. Initially 40 records are rendering and according to my tab device height I am able to see 17 records at a time. So yes ? Have you read the Bugs section of the Contributing to React Native Guide? Yes Environment react-native -v: From the pa Jun 20, 2021 · In the official docs is an example that says contentContainerStyle needs to be flex: 1 to know the height, that makes sence to me, so when i set contentContainerStyle with flex 1, refresh on pull works fine, but then i can't scroll anymore in the Flatlist and everthing get very tight, so the style also change then. 5} onEndReached={(): void => { appendData(); }} Here, the onEndReachedThreshold parameter tells the flatlist that onEndReached is triggered when at least 50% (1 = 100%) of the last element is shown. toString()} renderItem={({item}) => (. Updated. but, my flatlist not working as expected. keyExtractor tells the list to use the id s for the react keys instead of the default key property. Nov 7, 2020 · In the following little testing app onEndReached gets invoked multiple times, without me scrolling. I'm new on ReactNative development and I'm developing my first application. dev Nov 2, 2020 · I have a big FlatList and I am expecting to call onEndReached() when the user scrolls to the end of the list to make queries to my database. One of the FlatList's well-known bugs is probably about zIndex. onEndReached not working. For whatever reason, no matter what I do, I cannot get the horizontal mode to activate. Flatlist onEndReached endless loop. 50. But I want things to be entirely scrollable together. The function _maybeCallOnEndReached () called. Jun 23, 2020 · But can you please run the code with TouchableOpacity and let me know if you face the lag or onPress not firing while loading the data from API. FlatList calls `onEndReached` when it's rendered. 46. I have a problem with onEndReached in flatList. 5. Jun 18, 2019 · I have FlatList inside ScrollView, FlatList has onEndReached method to load paginated data (onEndReachedThreshold set to 0. fortmarek closed this as completed on Mar 21, 2023. I used the function onEndReached but it calls the function assigned to it every time I scroll thru the list. the problem is that i have the tag onEndReached on the FlatList and it never runs on the first load so a have to comment the TouchableOpacity Jul 13, 2018 · Actually you don't need to use Content or ScrollView as FlatList has both ListFooterComponent and ListHeaderComponent. 3. 5 will trigger onEndReached when the end of the content is within half the visible length of the list. Each page must be a FlatList since I will be needed onEndReached function + I want to use refresh control component. Oct 31, 2019 · FlatList onEndReached being called multiple times. Is there any bug or did I missed something ? Jun 29, 2018 · 16. I fixed my problem with nested FlatList not being able to scroll items on android by simply importing FlatList. 5} prop. But I have requirement to use the same. 0, 0. That means still there are 23 records to scroll. Jul 18, 2023 · onEndReachedThreshold={0. So, can I call it for example before the last 2 items? Apr 6, 2020 · ReactNative Flatlist onEndReached not working. Now I just put a console. There seems to be some kind of race condition, as it only happens 50% of the time I load the screen. this is my code: Nov 17, 2019 · I am using react-native FlatList component to render a list. console. Here is my component. _maybeCallOnEndReached () { const { data, getItemCount, onEndReached, onEndReachedThreshold, } = this. edited Jan 22, 2019 at 16:00. <View. Jul 3, 2019 · Now, I want to call some method when list reached the end. Try setting a fixed height for the FlatList, might be a layout issue. When ever the page is loaded the onEndReached method is called and mess up my userPicture array. You should check if the data is loaded and then render the List. After searching and the result is displayed, i will empty the textbox and again call the API Oct 15, 2020 · 1. 5, 0. It successfully calls the next page on reaching the end of the screen. id. I tried everything. Without setting this prop, FlatList Apr 10, 2020 · FlatList onEndReachedThreshold not working with horizontal={true} prop. onEndReached and onEndReachedThreshold not working well. data and to set this. onMomentumScrollEnd rather than onEndReached, like this: onMomentumScrollEnd={() => { // fetchData}} It might not be written as the available prop in the react-native documentation, but if you will see the source code for FlatList, it uses Virtualized List which in return has the mentioned prop available. My problem is when i test my app on a simulator when i reach the end of the page 0, page 1 does not load. and the distanceFromEnd is less than zero (varied from -300 to -70 depending on the list). Dec 5, 2019 · I use react hooks,firebase to build a react native app. 9 is not half the list. Nov 30, 2021 · Next make it so when you go back on page 1 it stays on page 1. onEndReached is called when the end of the view of the FlatList is within the range of the onEndReachedThreshold. Based from FlatListExample on UIExplorer in React Native v0. I am pretty struggling about using Hooks with FlatList. But it's not working :/ The problem is that, I have ScrollView in parent (ScrollView is nesting the FlatList). ReactNative Flatlist onEndReached not working. The first time that flatList is rendered the onEndReached function calls multiple time. ListView is deprecated as per React Native 0. onEndReachedThreshold is used to determine how far the distance from the bottom in order to trigger onEndReached . showSpinner to true. However, I am now trying to trigger this when the user is close to the end of the ScrollView, but unfortunately the function is not triggering. Any ideas? await this. Mar 19, 2023 · I am trying to create a paginated horizontal scroll view with its own vertical lists on each page. /config'; export const gamesApi Apr 28, 2018 · Since you are inverting your flatlist, onEndReachedThreshold would be the distance the user is from the top of the list [in percents]. Dec 16, 2017 · FlatList onEndReached event not working in ScrollView on React-Native. Flatlist with calling API on scroll does not work properly. 66. i had problem with onEndReach if i use ListFooterComponent to render loading when data not delivery it keep firing onEndReach non-stop. <Flatlist> must not be used in a <ScrollView> if you want to use onEndReached because Flatlist can not found the height. Infinite scroll is not working well. Aug 8, 2020 · Sequential data access and displaying Loading Icon: We need to add 2 properties to our FlatList component, onEndReached and onEndReachedThreshold. Oct 24, 2017 · 3. How far from the end (in units of visible length of the list) the bottom edge of the list must be from the end of the content to trigger the onEndReached callback. onViewableItemsChanged is May 4, 2023 · ListView and FlatList are two popular components used to render lists. data remains the same. import { ScrollView } from 'react-native'; // OR. </SafeAreaView>. setState({itemsToRender: this. The FlatList is set up as: return(. ScrollView are breaking the Set the threshold higher to see if the onEndReached is being triggered. Nov 26, 2019 · On my FlatList I am trying to implement an onPress to enter an Webview but this onPress is not working for some reason. Nov 14, 2022 · 7. When I add it to a bottom-drawer (based off of this) the "onEndReached" starts acting crazy - it will hit 10x suddenly, then scrolling to the end of the list won't trigger it anymore. Jul 15, 2019 · Development. I have tried in below way. onEndReached()} It might not be written as the available prop in the react native documentation, but if you will see the source code for FlatList, it uses Virtualized List which in return has the mentioned prop available. I don't really understand your scenario, but you might wanna consider just using Scrollview or Flatlist But I have 1 more problem. Nov 7, 2021 · To achieve infinite scrolling, there is onEndReached & onEndReachedThreshold props in our FlatList. The problem I am facing is onEndReached keeps triggering without even scrolling. The problem that onEndReached method keeps triggering without even scrolling. 28 participants. Optimizing onEndReached should not be called until the user scrolls down on the vertical FlatList. props. It won't help you when you will update your data inside 'FlatList`. I am using React Native 0. 55 documentation. For pagination, we use onEndReached. – Future King Commented Jun 23, 2020 at 12:44 Sep 20, 2019 · how I can to make page in axios can dynamic based on onEndReached from flatlist when axios and component in different file? I just found when axios and component in one file, but in my case, I have axios file and component file. It is definitely reproducible with a couple Dec 23, 2016 · onMomentumScrollEnd={() => this. Jan 15, 2019 · 3. What negative value of distanceFromEnd means and how to stop that. state. onEndReached callback is executed when end is really reached so it is really poor experience for our users. Directly used FlatList also. I had problems with FlatList after upgrading from 0. My FlatList trigger onEndReached once time. import { BASE_URL, API_KEY } from '. Code bellow: import React, {Component} from 'react'; import {ActivityIndicator} from 'react-native'; import PropTypes from 'prop-types'; Jul 26, 2019 · I made an infinite scroll using FlatList, and it works perfectly on its own. However, I am not sure how to trigger onEndReached using useEffect. The problem comes when the FlatList initially renders. Right now there are about ~200 messages for which the renderItem is being called in a range of 800-1200 times which is taking a hit on the performance. Changing this could be a bigger regression and it's not worth now to align with FlatList. I tried doing everything, from changing the threshold to adding a container with flex: 1;. toString Oct 17, 2017 · I have some troubles implementing an Infinite Scroll on a Flatlist. All help is much appreciated. Feb 13, 2021 · onEndReached={onEndReached} onEndReachedThreshold={0. 👍 3. 5 and scrolling down, onEndReach is triggered and the hi object is pushed to the list. I have a Flatlist inside animated ScrollView. 5 will trigger haft way scroll of item but when i set 0. 72 (along with many other dependencies, so not sure if something else broke it). I have applied the pagination to my backend and it is working when i am testing it on postman. Does anyone know why this happen? Sep 22, 2021 · I have a FlatList and implemented pagination to call on End to fetch more data. Sep 25, 2019 · This all works as expected. Jul 29, 2018 · I am closing this issue because it does not appear to have been verified on the latest release, and there has been no followup in a while. <FlatList data={this. Without setting this prop, FlatList would not know it needs to re-render any items because it is also a PureComponent and the prop comparison will not show any changes. I tried ALL the solutions from all other similar questions on stackoverflow. Reproducible Demo <ScrollView Nov 5, 2023 · in the code above i have the Select to the db sqlite and bellow i have the code of the screen where i have a FlatList. Is there any specific configuration that needs to be done in order for this to work? Note that this worked previously, but stoped working after updating RN to 0. 0. Try setting a flag like this : I want to implement a infinite scrolling feature into my Native application which includes using Flatlist to display multiple results of repositories to the user. 5} />. ); Using react native 0. and this for my API response Aug 24, 2018 · onEndReached should be used to load more data into your this. If legacyImplementation is set to true or render with ListView, onEndReached will trigger correctly when it reached end of list. state = { selected: (new Map(): Map < string, boolean >) }; _keyExtractor Mar 14, 2022 · Infinite scroll up not working. So to implement this I tried using the onEndReached prop in Flatlist to be used to call GraphQl to fetch the next set of repositories. In this article, we’ll discuss how to optimize these components using keys, getItemLayout, and onEndReached. And then onScroll function will trigger the desired function when beginning is reached. 1, add onEndReached to FlatList Nov 11, 2020 · So when I use onendreached in my flatlist, it starts right when screen loads and not when end is reached. You can also configure the comparison of contentOffset. Also set the throttle to '0' to fire changes only twice (once when still scrolling, once when scrolling is finished). <FlatList data={yourData} renderItem={({ item }) => <YourItemComponent data={item} />} keyExtractor={(item) => item. May 20, 2024 · In react native, FlatList is calling the onEndReached function on the initial load and not calling it when reaching the end of the list. You have to use onScroll. 01 ), am setting refreshing flag as well. const [state, setState] = useState([ //just a series of "random" to fill up the screen ]); let i = 0; return (. I tried some momentum thing and many many others. When the scroll reach end of the screen, it's taking a bit of a time to load the data. Can any one help me with this where all components are scrollable and also flatlist pagination is done in right way. Oct 25, 2023 · It get called like 10 times and when I check my API calls page is 2,4,5,6,8, 10 So it's like also skipping pages and it's calling these when I scroll ONLy one time to the end. I am trying to creating pagination with Firestore. Hello guys, I successfully implemented the API with pagination in app using FlatList. Basically my main aim is to load more data on right side when user reached at end of flatlist and load more data on left side when user reach on the first item of flatlist. However, using simple implementation, the refresh control does not work on iOS (Android works just fine). 1. Jan 25, 2021 · (Basically, FlatList elements vary in size, and in some cases 5 items are super small and it does not fill the entire height of the FlatList). Using this approach instead of a flexWrap layout can prevent conflicts with the item height logic. I'm trying to use OnEndReached in a flat list which is in a scrollview tab. You should be able to cater for this in your code quite easily by checking whether the data is empty or not. Jul 16, 2017 · Is this a bug report? Probably, or i don't know how to make it works. Sep 3, 2020 · The FlatList component has a onEndReached prop. By passing extraData={selected} to FlatList we make sure FlatList itself will re-render when the state changes. Scrolling through horizontal FlatList to the right is ignoring onEndReachedThreshold={0. There is a search function in my app where user can search using name. 5 it not trigger haft way to last item it wait until scroll to last item and it trigger onEndReach. To trigger the function at 50% your code should read something like this: inverted. createAnimatedComponent(FlatList), [], ); Not sure if this is the right approach, but it got me working since the other suggestions above didn’t seem to work. Seems to be a bug in the ScrollView bouncing feature on iOS (when you over scroll on iOS the ScrollView scrolls past the content and bounces back to the end of the content by default). Oct 4, 2018 · When the end of the list is reached on scrolling, a further page of articles is pulled from the API and appended to the articles list in a Redux reducer. articles} // The initial articles list via Redux state. But it's not getting called. getRandomPicutures(. How can I make sure onEndReached ListHeaderComponent: This prop would set the header view at the top of FlatList. log("previous page clicked", pageCurrent) // Do this so your page can't go negative. 43. Also, it requires scrolling to the last item for it to work if it worked. Alternatively. React native: 0. I'm working on drag and drop cards in FlatList, but zIndex doesn't work as expected. So, I added onEndReached it is working sometimes but sometimes not. be/rTw935FURQY – Nov 9, 2021 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand Sep 28, 2020 · <FlatList data={data} onEndReached={fetchData} onEndReachedThreshold={0. 9 Steps To Reproduce I console log in VirtualizedLIst. 1, 1. I have followed this Git solution. data={content} keyExtractor={(item) => item. Load 7 more related questions Show fewer related questions Sorted by: Reset to Nov 17, 2020 · How we can implement onStartReached in FlatList? I used horizontal list. It is what I tried: const [isFetching, setIsFetching] = useState(false) useEffect(() => {. note that adding if to every flatList is very labor Feb 17, 2022 · When using a FlatList in the ActionSheet, the onEndReached function is not consistently called when reaching the end of the FlatList content. It seems to me that the Gesture Handler or the Animated. Using FlatGrid component (Library based on FlatList). When onEndReached trigger, we must get new data and append to the old data => FlatList change and onEndReached can be fire. But didn't find any solution. Worked! May 17, 2017 · Same issue my side. So I customize CellRenderComponent as workaround(see this), but when I use CellRenderComponent, onEndReached doesn't work properly on real device. <FlatList. Needs: Repro This issue could be improved with a clear list of steps to reproduce the issue. For example, you have a cache on your API side for the last 10 items and it makes sense to show users the first time only these 10 items. Oct 22, 2023 · Infinite Scrolling: FlatList’s onEndReached callback prop makes it a breeze to load and display more items when users reach the list’s end, ensuring a seamless experience without slowing down Mar 9, 2017 · FlatList onEndReached triggered before reach end of list. Jan 28, 2022 · It will import the base URL and the API key from the /config directory and expose a function that fetches the data. This way you don't get negative pages or a zero page. I have tried changing the values of onEndReachedThreshold (bigger and smaller), with no luck. 0-rc. FlatList calling twice. Try my Sample Project to see how it acts. 15} /> My problem is that, when the end of the list (the real end, I mean, there is no more data to fetch) is reached this method continues being invoked. 1). e. After hours of trying different approaches I got it to work by wrapping the Flatlist with a View of fixed height and flex:1. For the last one, I need to handle the pagination with the onEndReached. 0 and I am attempting to make a horizontal FlatList using a card style layout. Flatlist has onEndReached implemented with threshold set to 0. My emulator: Pixel_API_25(AVD) - 7. [Using Functional Component]. pageNo at the end and it's not updating. 59. May 12, 2018 · In my situation the refreshing indicator was not showing at the beginning because the FlatList and the View that wrap the FlatList haven't flex: 1, so the list and its wrapper without content has no height. Use a <View> instead. but what happening with onEndReached is, it is calling even though we are not scrolling (I checked by doing console log). Im facing the problem that my Flatlist onEndReached method, calles to early. In case you really need to use FlatList inside ScrollView, then add style and content contentContainerStyle to your ScrollView or if you use native-base, inside the Content Apr 19, 2020 · I am having trouble in using flatlist in our react project. import { FlatList, StyleSheet, View } from 'react-native'; import React, { useCallback, useState } from 'react'; import { useTranslation } from Feb 12, 2018 · I am using react-native FlatList component to list of items Pagination is not happening as expected , as per documentation onEndReached has to get fired when end of page is reached, currently I tried changing the values for onEndReachedThreshold ( tried 0. 69 everything was fine. 44. May 17, 2022 · It seems similar to Flatlist. This props will be only used on the initial render of the FlatList . The problem still remains. youtu. My expected flow is - I'm fetching 10 item initially in flatlist. I have some idea of using onScroll using,but I thing this not properly. export default function App() {. The first two are horizontal. onEndReached should be a function that fetches more data and updates the state accordingly. 9. renderItem={this. Thus a value of 0. renderArticleListItem} // Just renders the list Jun 22, 2017 · I can reproduce the problem - onEndReached fires when the list is first scrolled in its visual "bottom" position, whereas you'd expect it to fire near the top. I'm fetching the another 10 item once user reached bottom of the flatlist using onEndReached props. Well, in this case, the end of the FlatList is clearly visible but onEndReached is not being called and so my next fetch does not happen. Then need to go to the very end of list and then wait There is issue when loading data in FlatList and your onEndReached handler will be called when the view is re-rendered. articles. Sometime a loader is seen but it doesn't most of the time. However, when the hi object is pushed due to scrolling, onEndReache is triggered again immediately, and the same hi object is pushed, resulting in duplication. S. EDIT: Sample github repo. React Native version: 0. 2 would be triggering at two lengths of the visible list. If you found this thread after encountering the same issue in the latest release , please feel free to create a new issue with up-to-date information by clicking here . In the case where 0 results are displayed, the view of the FlatList would be within the visible screen area (i. That's how onEndReached works. Magically, I don't know what is wrong, onEndReached is called. slice(-1)[0]. Dec 11, 2023 · onEndReached Not Triggered: Ensure that onEndReached and onEndReachedThreshold props are properly set in your FlatList. import { FlatList } from 'react-native-gesture-handler'; If this would not work, also try to import ScrollView. onEndReached give us the opportunity to call a custom function for what you want to do when the trigger is called. Hi! I know that it is not good practice to use flatlist inside Scrollview. No branches or pull requests. If you have any ScrollView or another FlatList Apr 9, 2018 · FlatList onEndReached event not working in ScrollView on React-Native. I used horizontal list. 5 would trigger the OnEndReached function when the user has scrolled through 50% of the viewable list. ac yv nf vd ei qk bf al ui an