Flatlist onendreached called on load After that, componentDidMount triggers and loads the updated data, which updates the DataSource. As mentioned in the docs. 3 and I'm having some problems with the extremely discussed onEndReached callback. onEndReached in FlashList should not be called when data is empty or when we are still waiting for the data resolved from api, also since default FlatList by react native doesn't do that Jan 22, 2019 · So I'm using a FlatList component to render a last set of data. function of flatlist. From the top? - if I set a value of onEndReachedThreshold ={10}, is my onEndReached called as soon as I scrolled to 10 pixel, or something else. Some FlatList props you will use almost every time. 3. Oct 30, 2021 · FlatList onEndReached called On Load (React Native) 0 FlatList React Native 0. data remains the same. 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. It should only get called when the data is loaded and the onEndReachedThreshold is true. Now onEndReached working weird. ) I would like that the onEndReached() method is only called when the user actually scrolls down the list. The data is displayed and takes up less space than the screen. Description. expo. But when the header and footer contents get larger, the onEndReached does not get called as onEndReachedThreshold includes the height of header and footer content. Some times pagination for FlatList doesn’t work as expected, onEndReached Will Sep 3, 2020 · The FlatList component has a onEndReached prop. Setting the inverted prop to true will trigger such event when the list reaches the top, but you will now be left without any event firing at the bottom. 72. 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. My Code: export default class Posts extends Component { By passing extraData={this. Jan 17, 2019 · Whereas onEndreached works completely on the calculations made when last element reaches the screen end. The first time that flatList is rendered the onEndReached function calls multiple time. The fetch call is made when onEndReached is called. This is my source code: import React, { PureComponent } from "react"; import { View, Text, FlatList, ActivityIndicator } from "react-native"; i Apr 20, 2018 · You must use onEndReachedThreshold in conjunction with onEndReached to prevent the weird behavior from happening. React Native Version 0. Jul 4, 2018 · onEndReached is called when the end of the view of the FlatList is within the range of the onEndReachedThreshold. 3 Output of npx rea Jul 15, 2019 · With decimal values for onEndReachedThreshold the callback, onEndReached doesn't get called until the end of the list. if I uncomment the above code and onEndReached would be called. , as input and returns an object { success: true, message: 'success. I am consuming an api with POST method, which takes an object containing pageNumber, pageSize etc. Link. Oct 31, 2019 · FlatList onEndReached being called multiple times 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. Also, it requires scrolling to the last item for it to work if it worked. onEndReached give us the opportunity to call a custom function for what you want to do when the trigger is called. We can also adjust the threshold for triggering onEndReached using the onEndReachedThreshold prop of FlatList. OnEndReached. Expected Results. Jan 20, 2018 · This is normal RN behavior. 1 React Native Flatlist gets endless loop onEndReached Apr 26, 2021 · However, from my testing in react native v0. Jun 17, 2019 · This is my FlatList component, i figured that the onEndReached triggered because the list is lack of items therefore it triggered the onEndReached even though the first load is not yet completed. I want to load the comments when user reaches the end of article body, and onEndReached should only trigger when comments end is reached. The most consistent way of triggering my end of list function was to Mar 10, 2019 · thanks for the reply, but I'm facing an issue with the same implementation as you described above, Is that once I load more data and render is called the flat list move back to the latest top element, it's not as smooth as the natural scroll (adding data at bottom). Jul 28, 2024 · Description flatlist onEndReached doesn't work at the bottom of the list, but works at the start of the render Steps to reproduce React Native Version 0. So far it's good for having long data. I should use the ScrollView for the animation and also working the FlatList May 1, 2024 · A loading indicator is displayed using ListFooterComponent. Apr 4, 2018 · You should use <FlatList . Feb 4, 2019 · Im trying to implement Flatlist of Somedata which contains almost 200 elements in an array that im passing in data. Configurable viewability callbacks. [Using Functional Component]. Using FlatGrid component (Library based on FlatList). S. But didn't find any solution. Jan 25, 2021 · I am trying to implement an infinite scroll mechanism where I fetch data from the server and feed it into a FlatList. Dec 23, 2016 · So my solution is simple. selected变化时，能够正确触发FlatList的更新。如果不指定此属性，则FlatList不会触发更新，因为它是一个PureComponent，其 props 在===比较中没有变化则不会触发更新。 keyExtractor属性指定使用 id 作为列表每一项的 key。 Jun 22, 2020 · The refreshing prop tells the FlatList component to show a RefreshControl component when new data is being loaded. It's used to trigger the loading of the next page of data. Jul 10, 2017 · Description FlatList onEndReached triggered when I view init screen before reach end of list. I am using FlatList’s onEndReached prop to get new items on scroll. No description. Directly used FlatList also. React Native Flatlist gets endless loop onEndReached Sep 28, 2020 · <FlatList data={data} onEndReached={fetchData} onEndReachedThreshold={0. Closed Copy link zachrnolan commented Sep 22, 2017. Sep 22, 2017 · FlatList onEndReached called On Load (React Native) 1. Snack, code example, screenshot, or link to a repository: This is my sample project Dec 16, 2017 · FlatList onEndReached called On Load (React Native) 3 FlatList onEndReached event not working in ScrollView on React-Native. I have tried in below way. It could also be because something is causing the whole flatlist re-render often. contentLength or this. I tried ALL the solutions from all other similar questions on stackoverflow. 5 calls the callback at the end not halfway. For example, 0. (e. Actual Behavior. this is my code: Aug 19, 2024 · 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. [AdSense-B] [AdSense-A] Issues with React Native FlatList or onEndReached doesn’t get fired. How can I make sure onEndReached It sounds like that the onEndReached would be called again only if the length of list had been changed. Also removing the scrollView didn't work- May 17, 2022 · I am using a library called react-native-swipe-list-view. It accepts a Boolean value. 7} /> the onEndReached: Called once when the scroll position gets within onEndReachedThreshold of the rendered content. Footer support. Notes: onEndReached should not be called on load; I'm able to load more pages as I scroll down, however, it will call onEndReached multiple times if I scroll really fast. articles state object and to the FlatList, BUT the FlatList jumps/scrolls back to the first item in the list. 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. However, it can sometimes lead to unexpected behavior or errors. My use case is that FlatList would try to fetch some more data when user scroll to the bottom of the list. Ideally, when I scroll to the end of the list, I want to load the next page of the fetch call. But it called at start when I scroll not when I reached at the end of list. The problem still remains. Check for that. For the last one, I need to handle the pagination with the onEndReached. When ever the page is loaded the onEndReached method is called and mess up my userPicture array. With onEndReachedThreshold set to 0. 5 and scrolling down, onEndReach is triggered and the hi object is pushed 给FlatList指定extraData={this. The first is using a FlatList and the second is using a SectionList. 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. Is there anywork around for onEndReached that it has to wait for my fetchData to complete first before it fetchs another. Below is my code : < Aug 8, 2020 · Sequential data access and displaying Loading Icon: We need to add 2 properties to our FlatList component, onEndReached and onEndReachedThreshold. The first two are horizontal. Is there any bug or did I missed something ? May 23, 2023 · Infinite scrolling: FlatList provides an onEndReached callback prop that triggers when the user reaches the end of the list. Nov 4, 2017 · I am displaying 20 items for the first time when FlatList is loaded. isCloseToBottom = ({ layoutMeasurement, contentOffset, contentSize }) => { const paddingToBottom = 20; // how far from the bottom return layoutMeasurement. FlatList renderItem is being called multiple times. Platform-Specific Issues: May 6, 2022 · How can you implement a start reached event for React Native's FlatList component?. This function will be used on the FlatList prop called onEndReached. 9 is not half the list. We just need to provide one prop to FlatList, the onEndReached callback. Hot Network Questions Jan 15, 2019 · Im facing the problem that my Flatlist onEndReached method, calles to early. When I scroll to the end, the handleLoadMore method gets called and duplicates the first page of the list with the next page results. Jun 27, 2023 · Description OnEndReached calls on initial render when the app runs each time on the first time and is called even if data is empty React Native Version 0. Open with Expo Go. Data Loading Logic Ensure your data loading logic is correct and handles infinite scrolling or load more scenarios effectively. If I set a conditional render to only render the FlatList if my items variable was set and had data, it would work 100%. Rendering FlatList inside TabNavigator. Oct 24, 2017 · FlatList onEndReached called On Load (React Native) 1. To do this, I decided on a number of items that will be loaded per fetch(5 in my case). Feb 27, 2021 · return null; } /** * NOTE: * * - You can also control the scroll offset, at which `onEndReached` and `onStartReached` * should be called, using props - onEndReachedThreshold and onStartReachedThrehols * - We are using `inverted` FlatList, since thats a common UX for Chat applications. In react-native-web, what's going on is that onEndReached keeps on running until all 400 elements have loaded. Setting Up FlatList. I tried doing everything, from changing the threshold to adding a container with flex: 1;. state} to FlatList we make sure FlatList itself will re-render when the state. 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. . Header support. FlashList by Shopify onEndReached gets called when data is still empty whereas FlatList by react native isn't. Is there a solution available for it or any alternative in iOS? Edited: Below is the code I tried but this doesn't seems to work. 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. 15 Affected Platforms Runtime - Android, Runtime - iOS Output of npx react-native Jul 3, 2019 · Now, I want to call some method when list reached the end. y >= contentSize. FlatList already provides an onEndReached event. P. I, personally recommend you use at least windowSize={3} so you have the previous and the next screens rendered buut it really depends on the sizes of the images you are showing. Therefore you may set the value as onEndReachedThreshold={0. A calendar will keep loading one month after the other, without stopping. state}属性，是为了保证state. You switched accounts on another tab or window. props. 71. 57. Here are some common issues and their solutions: 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. Pagination is an essential technique that helps developers handle large datasets… Trong bài viết này, mình sẽ chia sẻ hai tính năng là "Load More" và "Refresh" trong Flatlist. As a result, this lets the developer seamlessly load and display more items on the screen without impacting the apps’ speed; Navigation methods: Need to navigate the user to a specific item on the screen? Nov 11, 2020 · So when I use onendreached in my flatlist, it starts right when screen loads and not when end is reached. I want to limit the posts in 12 and when the user scrolls, automatically load more posts. Notes: onEndReached should not be called on load; I’m able to load more pages as I scroll down, however, it will call onEndReached multiple times if I scroll really fast. log('render'); Feb 24, 2023 · Results: onEndReached is called once on load of the FlatList. Mar 29, 2020 · FlatList onEndReached called On Load (React Native) 1. So, can I call it for example before the last 2 items? Sep 11, 2023 · FlatList provides several key features, such as lazy loading, item recycling, and smooth scrolling, making it ideal for building performant lists in your mobile applications. personId Apr 25, 2025 · ReactNative 之FlatList使用及踩坑封装总结 在RN中FlatList是一个高性能的列表组件,它是ListView组件的升级版,性能方面有了很大的提升,当然也就建议大家在实现列表功能时使用FlatList,尽量不要使用ListView,更不要使用ScrollView. This does not happen on iOS. You signed out in another tab or window. onEndReached within FlatList gets called when the user scrolls close to the end of the list. Only trigger the onEndReached callback when the loading state is false. 7 version. Custom pagination with dynamic data loading can improve the performance and overall user experience of your app. Load 7 more related Oct 17, 2017 · I have some troubles implementing an Infinite Scroll on a Flatlist. Jul 9, 2020 · I am trying to implement infinite scrolling using Flatlist in react native web. I have read some suggestion to wrap flatlist in a view with flex:1 but I still doesn't work properly. Scroll loading. This function must be responsible for loading new data and updating the list items in the FlatList component. ) Memory consumption: How much information about your list is being stored in memory, which could lead to an app crash. Oct 25, 2023 · I have a simple component with list of Cards, what I want to do is also simple which is infinite scrolling, so that when I reach almost the end to just increment the page by 1 and call my API ( usi There is issue when loading data in FlatList and your onEndReached handler will be called when the view is re-rendered. To get started with FlatList, you’ll first need to import it from the ‘react-native’ package. Then, you update the state with the setState which triggers a re render to update the FlatList. 1 Output of npx react-native info System: OS: macOS 13. Value lies from 0 to 1+. Due to the fact that a FlatList always starts at the top of the list, we want to make sure to only call onTopReached when the user is scrolling through the list. onEndReached invoked multiple times on Jan 28, 2022 · Add a handle method inside the HomeScreen component called loadMore. hey guys i'm receiving JSON data from my API (like the image) and trying to show using flatlist, it works, but when i use RefreshControl to refresh… Premium Explore Feb 14, 2019 · I am aware that there are some issues with having a FlatList inside a ScrollView and getting onEndReached to be triggered as only the ScrollView's scroll events are registered? This results in the inner onEndReached being called immediately on load and then over and over again Jun 5, 2023 · Airtable only gives 100 records by default on API calls to load more than 100 records I have used offset address but when all the records are called I want to show them in batches when a user scrol Jun 13, 2023 · In the following section, we’ll go into more detail about some key FlatList props and how to render items with FlatList. There's a prop of the FlatList component called initNumToRender, which tells the component how many items of the FlatList should be rendered at first. But when the rest API pagination completed, it returns the empty JSON array. May 4, 2023 · Use onEndReached: Implement the onEndReached callback to load more data when the user reaches the end of the list. Nov 17, 2019 · FlatList onEndReached called On Load (React Native) 0. onEndReached should be called again after step 3. Oct 6, 2019 · FlatList onEndReached called On Load (React Native) Hot Network Questions Riemann's letter to Gauss Does the name of a proto-language refer to the actual language . Multiple column support. 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 Jul 21, 2017 · pull down the list to index of 85 , onEndReached called as expect; pull up to index of 50, pull down the list to index of 85 again; Expected Behavior. onEndReached={this. The onEndReached prop in React Native's FlatList component is a powerful tool for implementing infinite scrolling. It seems similar to Flatlist. I am using flatlist onEndReached, onEndReachedThreshold but after loading first 10 elements it is calling onEndReached Jul 18, 2023 · onEndReachedThreshold={0. Coding example for the question FlatList onEndReached being called multiple times Nov 24, 2020 · FlatList onEndReached called On Load (React Native) 1. Why would this be? Feb 5, 2020 · In my experience, FlatList performs better if you put a setTimeout in the function that's called by onEndReached. Apr 26, 2025 · Infinite Scrolling and Load More: Scroll Position If you're using infinite scrolling, be careful not to accidentally scroll the list back to the top when loading more data. _sentEndForContentLength has changed for some reason before your console in chrome. So I implemented onEndReached(). 5. Nov 17, 2017 · I eventually found out that attempting to render the FlatList without items loaded in could cause something to break and the FlatList never calls onEndReached, even after items do load in and the component seemingly re-renders. 60 Android Blank and Freezes. FlatList inside Tab ScrollView. Dec 9, 2022 · A Load More button will show. 5 will trigger onEndReached when the end of the content is within half the visible length of the list. 2. selected changes. Optional horizontal mode. state. These props allow you to customize the functionality of the FlatList component according to your needs : data: This is an array containing the data to be rendered. Here are some common issues and how to troubleshoot them: Infinite Loop: Solution Implement a loading state to prevent unnecessary data fetching. Can any one help me with this where all components are scrollable and also flatlist pagination is done in right way. Where the larger the number, the earlier the call and the smaller the number the later it Apr 14, 2025 · FlatList. people} renderItem={} keyExtractor={(item, index) => item. Once user reaches to end of the list again fetching 20 more items and adding those items to previous list and then displaying th Nov 14, 2017 · The properties you need to combine are actually initialNumToRender and windowSize. endReached} onEndReachedThreshold={. onEndReached is called once on load of the FlatList. Load 7 more related May 20, 2022 · The aim is to load 400 items overall and to load 20 each time the user hits the bottom of the FlatList element. height - paddingToBottom; }; FlatList onEndReached Called On Load [iOS]. May 5, 2020 · You signed in with another tab or window. Mar 19, 2023 · Description I'm developing a react native app using the version 0. Jan 24, 2020 · I am using the infinite scrolling Flatlist pattern of react-native mentioned on the internet. onEndReached: Called once when the scroll position gets within onEndReachedThreshold of the rendered content. FlatList should call onEndReached and load more cards when scroll reaches to the end, but it seems to call onEndReached at weird point and jump right to the end. Since no data is yet displayed, the onEndReached should not be called. 2 would be triggering at two lengths of the visible list. Reload to refresh your session. 1 How to create a FlatList . const Pending = ({orderData, loading, onEndReached}: any) => ( <> {loading ? Sep 7, 2016 · Threshold in pixels (virtual, not physical) for calling onEndReached. Sep 22, 2021 · I have a FlatList and implemented pagination to call on End to fetch more data. i wonder if i need to re-render the component to reset some status related to onEndReached, Jan 1, 2019 · My FlatList triggers onendreached not as expected. Can somebody help me with this one? Feb 23, 2018 · FlatList onEndReached called On Load (React Native) 1. React Native Flatlist nested loop. 0 React Native : iterate and display Mar 29, 2021 · I'm using a FlatList to display a list of items with inifinite scrolling. I have a problem with onEndReached in flatList. As soon as onRecahEnd is executed flatlist scrolled to to top even though I am not calling any API yet. I have experienced FlatLists constantly refreshing because it hasn't finished loading more data before onEndReached gets called again. What I'm implementing is a way of loading chunks of data progressively so this way performance is stable. But it's not working :/ The problem is that, I have ScrollView in parent (ScrollView is nesting the FlatList). A performant interface for rendering basic, flat lists, supporting the most handy features: Fully cross-platform. 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} and onEndReached(to fetch more data) callback for the same. @trickeyd - in my case, onMomentumScrollEnd is getting called before the onEndreached, so setting this. Nov 23, 2021 · I have two separate components. no scrolling), hence, onEndReached won't be called. More data is loaded when the end of the list is reached using the onEndReached prop. In the case where 0 results are displayed, the view of the FlatList would be within the visible screen area (i. The OnEndReached event is working without parent ScrollView but in ScrollView, not working for me. Mar 9, 2017 · I'm noticing that when using onEndReached to load more content and there is no more content, but the data array is changed (because loading nothing lead to a new identical array being created) and therefore a rerender is triggered with the cursor position is at the end, onEndReached is called again and an infinite loop occurs. Thus a value of 0. Separator support. At first, when the component is created you have an empty DataSource ([]) so the FlatList is rendered with that. So, I added onEndReached it is working sometimes but sometimes not. so I just wanted to know what it means, is it threshold from the top, or is it threshold from the bottom. Nov 16, 2019 · Expected Behaviour: On end of page arrival the handleLoadMore function should be get called. onEndReached not called. Tại sao Load More và Refresh là quan trọng? Khi xây dựng ứng dụng di động, trải May 9, 2017 · Try it yourself: https://snack. So in my FlatList component I entered this: Dec 15, 2023 · FlatList emerges as the solution, allowing developers to render multiple data sets with a consistent interface. I'm trying to use OnEndReached in a flat list which is in a scrollview tab. Set the threshold higher to see if the onEndReached is being triggered. Shouldn't onEndReached be called in this situation? Or is my assumption incorrect because the data wasn't scrolled to? From my testing, onEndReached is not called on Android & IOS but I want it to. This value represents a Mar 24, 2019 · 最近在做一个RN项目，有使用到FlatList这样一个RN封装的组件去做上拉加载更多功能，在iOS和Android平台上，总结了以下几个遇到的问题及解决方案 1. I have an article view with a body. But if set to >0 then circular loader will render and onEndReached function will call as soon as the end of list is within this threshold value. In FlatList on writing prop initialNumToRender={50}, upto 50 items in my FlatList are getting displayed, other than that are getting displayed, I have t Feb 2, 2019 · FlatList onEndReached called On Load (React Native) 0. Responsiveness: Application ability to respond to interactions. You can pass a function and inside of it test if there’s no more items to add and display your message in footer. This causes onEndReached to be called I have a PasteBin of my component that is supposed to load the first page of a fetch GET request. I am sure why this happened. Hot Network Questions Apr 26, 2025 · While FlatList#onEndReached is a common approach for implementing infinite scrolling in React Native, there are other alternatives that you can consider depending on your specific use case and preferences. React Native Flatlist gets endless loop onEndReached using redux. I've been having a couple different Nov 21, 2018 · The reason of triggering onEndReached multiple times is because you have not set initialNumToRender properly. Nov 29, 2024 · In flatlist prop onReachEnd a function is called to update a state. I tried some momentum thing and many many others. 1 CPU: (8) arm64 Apple Nov 12, 2020 · Introduction The principle of loading a lot of data into chunks is pagination. Feb 19, 2019 · I have a problem with onEndReached in flatList. I believe this is due to the momentum issue outlined here: [FlatList] onEndReached triggered 2 times #14015 (comment) I'm guessing the reason onEndReached is called so much is because the threshold is too low or you're scrolling around. That's how onEndReached works. Oct 15, 2020 · I'm new on ReactNative development and I'm developing my first application. Apr 26, 2025 · onEndReached is a callback function. 1. Low Loading all data at once can lead to performance issues, causing the app to crash or slow down significantly. This technique, known as “infinite scrolling,” can enhance your app’s Jan 13, 2020 · I am going to show the items by using the FlatList and the FlatList component is the child of the ScrollView because there is some animation. The higher the number, the quicker onEndReached is called. All normal here. I am using onEndReachedThreshold={0. e at first only 3 cards should load on reaching end more 3 cards should load. Consider a situation in which you have to fill a list of the names of 1000 individuals, so if we load all the data at once, loading time and response time would also increase to enhance this, we will enforce the pagination Continue Reading » Jul 21, 2018 · FlatList onEndReached called On Load (React Native) 1 React Native Flatlist gets endless loop onEndReached using redux. ScrollToIndex support. Reproducible Demo <ScrollView> <CoverPhoto/> <Text>{title}</Text> <FlatList data={this. Sep 4, 2018 · FlatList has a property onEndReached which takes a function to be called when the user reaches the end of the list. Apr 26, 2025 · The FlatList#onEndReachedThreshold prop in React Native can sometimes lead to unexpected behavior or errors. Load 7 more related Jun 29, 2017 · With the current implementation the ListView will call onEndReached() when the last items of the list are rendered. The onRefresh is a callback prop that calls the function when the refreshing prop is set to true. 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 Feb 13, 2021 · So when I first load my component it fetches data from the server. Load More cho phép người dùng tải thêm dữ liệu khi người dùng cuộn xuống cuối danh sách, trong khi tính năng Refresh giúp làm mới danh sách hiện tại. I notice that it works fine if I have only one column. ', data: [ items Jul 28, 2018 · FlatList onEndReached called On Load (React Native) 1. Expected behavior. Easy as console. I am getting 10 elements in api call based on start index and end index. Magically, I don't know what is wrong, onEndReached is called. If you use onScroll in Flatlist then sometimes its not working for the android, but for iOS it works. Use onScroll and detect the end of the scroll. no when screen load data 0 and pageSize 10 then condition false after _onLoadMore call data tobe 10 and pageSize to be 20 onEndReached function are call if array of last index visible on screen – Shivo'ham Jul 13, 2018 · Actually you don't need to use Content or ScrollView as FlatList has both ListFooterComponent and ListHeaderComponent. io/HJc-0uygW Adding this is almost as simple as pull to refresh above. onEndReached: Triggers the loading of the next set of data when the end of the Sep 24, 2018 · FlatList onEndReached called On Load (React Native) 1 React Native Flatlist gets endless loop onEndReached using redux. like we load more in bottom the focus stays on the current item but in case of top, it flickers on the very top. g. onEndReached takes a callback that will be run 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. I use this scrollview because I have 3 flat lists in my application. However, below the list is more content using ListFooterComponent. I'm moving to the FlatList component due to ListView being depricated and I'm trying to figure out a nice implementation for determining when the user has scrolled to the top of the page. which makes the if part return false Feb 3, 2010 · FlatList onEndReached called On Load (React Native) 0. This prop is called when the scroll position reaches a Dec 5, 2019 · FlatList onEndReached called On Load (React Native) 0 React Native load data from API using hooks. Jun 3, 2017 · onEndReached is called one or two times before the first load ends and data array is filled. e. height + contentOffset. onEndReached invoked multiple times on render. The state is updating correctly but dont know why it is scrolling to top every single time. and the distanceFromEnd is less than zero (varied from -300 to -70 depending on the list). Now with infinite scrolling pattern, onEndReached function is infinitely thrown leading to unnecessary rest call. Feb 12, 2018 · Official documentation of React Native FlatList has many more functionalities listed. callOnScrollEnd = false doesn't make any change as just after onMomentumScrollEnd gets called, onEndreached gets called setting it again Apr 18, 2019 · Flatlist has onEndReached implemented with threshold set to 0. But here i need to find out whether list scroll to end, means after last item visible i need to call load more. Jun 28, 2019 · When I use onEndReached function in FlatList, it gets called automatically. 0. Apr 14, 2025 · Optimizing Flatlist Configuration Terms VirtualizedList: The component behind FlatList (React Native's implementation of the Virtual List concept. I am having an issue however, depending on the data that I receive from the server, the Oct 4, 2018 · The problem is that when the end of the FlatList is reached on scrolling, the API is called, the new articles are pulled fine and appended to the this. Hot Network Questions Can i be charged for calling the (german Jul 4, 2018 · onEndReached is called when the end of the view of the FlatList is within the range of the onEndReachedThreshold. 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. react native flatlist item is not defined. Don't use onEndReached at all. May 20, 2018 · I'm having a lot of trouble scrolling to the top of my Flatlist so any help would be greatly appreciated! Essentially it fetches the first 5 items from firebase, then when onEndReached is called we Mar 18, 2023 · Current behavior. onEndReached is triggered in this _maybeCallOnEndReached in VirtualizedList. If you only want one screen of images visible at a time, you would use windowSize={1}. Here’s the Apr 6, 2020 · FlatList onEndReached called On Load (React Native) 1. Nov 7, 2020 · FlatList onEndReached called On Load (React Native) 12. May 6, 2018 · My skills is basic, and I'm new to React Native. Oct 25, 2020 · I want to render a list of items in a ReactNative FlatList, initially I am loading 15 items and then load more when user scrolls down. 既然说到FlatList,那就先温习一下它支持的功能. Oct 23, 2018 · when code really run in FlatList, the if part is true, so it call onEndReached, and then the _scrollMetrics. Im trying to give user the option to load the rest when they scroll only. Getting problem in flatlist of react 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. The problem I am facing is onEndReached keeps triggering without even scrolling. 进入页面onReached开始就被触发 解决方案： 当onEndReachedThreshold设置大于1时，的确进入页面就触发，设置在 Nov 12, 2023 · 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. But it's not getting called. onEndReached gets called again and again. May 17, 2017 · FlatList onEndReached Called On Load [iOS] (with detailed findings) #16067. Jan 4, 2020 · Use the. 25 means that the function will call when 75% of list is scrolled. ListFooterComponent – For rendering circular loader and Load More button So I see issue with onEndReached , it is invoking on load. 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. React Native FlatList Rendering. By passing extraData={this. Try setting a flag like this : Mar 10, 2020 · I have a Flatlist that displays cards and information in it, I have to apply pagination to it i. When I navigate from the first to the second component and trigger the "onEndReached", it ends up being called on both components. Pull to Refresh. But when I use whole numbers, 5, let's say, the callback gets run halfway. Let’s create a basic setup for a list of items. Below is the link of this issue. but what happening with onEndReached is, it is calling even though we are not scrolling (I checked by doing console log). 4, onEndReached has an erratic behavior even then, sometimes it's not called when you scroll too quickly in Android, and if you are on iOS and the list does the bounce effect when reaching the end, it may be called several times. FlatList can enter a state where onEndReached gets called in a loop if I use the onEndReached prop to fetch the next page of the data and this causes a change in the height of ListFooterComponent (see attached screen recording). The problem comes when the FlatList initially renders. 5} Dec 11, 2023 · I am working in react-native 0. Hot Network Questions Nov 14, 2019 · I am working on pagination logic in my app. byemiaphkzmetkcpnnghuqifrssjyqqimqzcltbqxglrag