React native flatlist loop Continue to help good content that is interesting, well-researched, and useful, rise to the top! See full list on reactnative. Ideal for OTT apps, chat apps, social feeds, and more. Problem The onEndReached callback is called repeatedly in quick succession, leading to multiple data fetches and potentially an infinite loop of API calls. You can add a prop onEndReached on FlatList. Dec 31, 2018 · javascript reactjs react-native react-native-flatlist asked Dec 31, 2018 at 13:18 MoKhajavi75 2,710 5 31 57 FlatList onEndReach gets duplicated and stuck in an infinite loop. Upvoting indicates when questions and answers are useful. Animated focuses on declarative relationships between inputs and outputs, configurable transforms in between, and start/stop methods to control time-based animation execution. (like a full width image carousel where u can scroll to the left or right ). Jun 23, 2017 · Description If you pass a non-array object to FlatList data property, ReactNative javascript thread gets stuck in a infinite loop, due to FlatList. Responsiveness: Application ability to respond to interactions. The problem is that the onPress will be hit for every A compelling reason to use React Native instead of WebView-based tools is to achieve at least 60 frames per second and provide a native look and feel to your apps. React Native FlatList is a powerful element that offers several benefits to builders This React native course is made by anil Sidhu in the English language. May 27, 2025 · If you absolutely must have a FlatList within a larger scrollable area, you might need to give the FlatList a fixed height. _getItemCount returning NaN. reactjs react-native react-native Nov 17, 2019 · React Native Flatlist gets endless loop onEndReached using redux Asked 5 years, 3 months ago Modified 5 years, 3 months ago Viewed 2k times Feb 27, 2021 · Support for onStartReached FlatList from React Native has built-in support for infinite scroll in a single direction (from the end of the list). Optimizing FlatList Configuration Terms VirtualizedList: The component behind FlatList (React Native's implementation of the Virtual List concept. ?? Mar 9, 2021 · Learn how to build a Spotify style list that can scroll both horizontally and vertically in React Native. The problem i am having is with the onPress prop and trying to get it to work with the FlatList. In this tutorial, we'll learn how to use render lists in FlatList component, implement pull-to-refresh, infinite scrolling, and optimize list performance. Ideally, when I scroll to the end of the list, I want to load the next page of the fetch call. Jun 10, 2017 · It works in the sense that it is automatically scrolling through the list, the problem however, is I cannot manually scroll through the list, since the scroll position is constantly updated by the scrollTo listener. You should implement onEndReached and onEndReachedThreshold to handle a better user experience when the user reaches the threshold. It is scrollable and eliminates the need for developers to write a loop function. (loop back to first element ) . I have tried to add an onPress callback to disable the animation when the FlatList is pressed, I have however not been able to get it to work. This function gets called when your scroll is near the end of the list, and thus you can append more items to the list from this function. Generally, you'll want to use either FlatList or SectionList. This is not efficient when you have a large number of nested components. Low responsiveness, for instance, is when you touch on a component Apr 11, 2020 · With this the FlatList appears to scroll beyond its last item with a continuous loop. I am still new to React so I'm not that familiar with how to loop Now what I'm tr May 1, 2024 · Conclusion By leveraging useInfiniteQuery, you can effortlessly implement infinite scrolling in your React Native applications. Aug 7, 2025 · FlatList is a react native component. Example to add any list items to ScrollView using Loop in React Native App. Feb 10, 2020 · Basically, implementing onScroll usage is when you want to be noticed when the actually scroll related to the scroll position (aminations for instance). However, there are certain areas where we haven't quite reached that level yet Description If you pass a non-array object to FlatList data property, ReactNative javascript thread gets stuck in a infinite loop, due to FlatList. Apr 24, 2025 · Learn how to use React Native FlatList with examples and best practices. Dec 22, 2021 · reactjs react-native react-native-flatlist edited Dec 22, 2021 at 14:23 Amila Senadheera 13. The ScrollView component renders all nested components once even though some are not visible on the screen. Jan 24, 2020 · I am using the infinite scrolling Flatlist pattern of react-native mentioned on the internet. _getItem May 27, 2025 · What is a FlatList? First, a FlatList is a highly performant component in React Native designed for rendering long lists of data efficiently. When I don't use redux it works but when I moved my fetching into a redux action I'm getting confused. Whenever feasible, we aim for React Native to handle optimizations automatically, allowing you to focus on your app without worrying about performance. FlatList works well for long lists of data, where the number of items might change over time. I'm trying to loop through a nested array in my React native app. container}> <FlatList data Aug 18, 2022 · react-native react-hooks react-navigation react-native-flatlist edited Aug 18, 2022 at 10:06 asked Aug 18, 2022 at 9:25 Ikhsannul Hijri reactjs react-native react-native-flatlist react-native-listview asked May 16, 2018 at 19:48 Jude Fernandes 7,545 12 57 93 Apr 24, 2025 · The FlatList component is one of the most important building blocks in React Native. Map of map of map might be too complicated to make sense of down the line, also if the data is big and changing will create some Feb 20, 2024 · In this video tutorial, you'll learn how to utilize the FlatList component in React Native to efficiently render lists of data. 85K subscribers Subscribed May 1, 2025 · Struggling with performance in React Native apps? Learn the best way to render large lists using FlatList, FlashList, and @legendapp/list. Now you may be wondering, well if we reach the end of the appended list won’t we encounter the same problem Dec 6, 2024 · Dive into this detailed guide and learn why React Native FlatList is the go-to tool for creating dynamic, efficient data lists in your app. See the contributing guide to learn how to contribute to the repository and the development workflow. In this guide, you’ll learn everything about FlatList with practical examples that you can use in your apps right away. I tried using a for loop, but that didn't work. Basic FlatList Usage Let’s start with a simple example of how Oct 8, 2025 · Component that wraps platform ScrollView while providing integration with touch locking "responder" system. This approach goes beyond articles – you can adapt it to various use cases like product listings, chat history, or any scenario where you're dealing with large datasets. The Animated library is designed to make animations fluid, powerful, and painless to build and maintain. I have a PasteBin of my component that is supposed to load the first page of a fetch GET request. When you would like to be notified when the user reaches, or about to reach, to the end of the FlatList. A wrapper over FlatList in React Native, with infinity looping in both start and end to repeat items endlessly. Whether you’re building a social media feed, a product list, or any scrollable content - FlatList is your go-to solution. FlatList component in React Native is a performance-improved component for rendering large scrollable lists of data. 3k 16 29 46 Oct 19, 2023 · What is React Native FlatList? It is a component that renders items in a scrollable view. Aug 27, 2025 · In this entire tutorial, we will be dissecting how to utilize the React Native FlatList, what goes on behind the scenes, rendering various types of ListItems, and optimizing your list rendering for improved performance and user experience. Sep 27, 2018 · You'll need to complete a few actions and gain 15 reputation points before being able to upvote. We will see the basic idea about the loop in JavaScript. It only renders items that are currently visible on the screen, which helps with performance, especially for lists with hundreds or thousands of items. So far it's good for having long data. Learn how to use FlatList in React Native to display large lists of items. ) Memory consumption: How much information about your list is being stored in memory, which could lead to an app crash. May 19, 2019 · I'm trying to fetch data from redux to a FlatList and onRefresh={} gives me an infinity loop. How can I scroll back to the first element of the scrollview / Flatlist when user tries to scroll past the last element. The FlatList component displays a scrolling list of changing, but similarly structured, data. FlatList is a powerful compon Feb 7, 2022 · In this article, I’ll walk you through using two methods of listing data in a React Native app: with map and with the FlatList component. Please help. dev Feb 20, 2024 · In this video tutorial, you'll learn how to utilize the FlatList component in React Native to efficiently render lists of data. Points of video Make List with FlatList and Array Apply Style Make Component Use Component inside List Interview Questions. Jul 10, 2019 · I am trying to build a FlatList in react native. But when the rest API pagination completed, it returns the empty If you want to render each lesson as a flatlist item the above will work fine. If you want to render each topic as a flatlist item maybe it will need some reordering either at the data level or at react native lever. The May 31, 2020 · I'm beginner in react native, and I want to use for loop in flatlist to push require data, render () { return ( <View style= {styles. What's reputation and how do I get it? Instead, you can save this post to reference later. Nov 20, 2019 · React Native Flatlist nested loop Asked 5 years, 4 months ago Modified 5 years, 4 months ago Viewed 874 times React Native Carousel With Pagination, Auto Play and Infinite Loop Rakha Wibowo 3. A performant interface for rendering basic, flat lists, supporting the most handy features: Using List Views React Native provides a suite of components for presenting lists of data. Developers only need to supply a list of items in an array, and the FlatList will render it for them in the most excellent ways possible. Reproduction Steps Pa Sep 24, 2017 · React native infinite scroll with flatlist Asked 8 years, 1 month ago Modified 6 years, 1 month ago Viewed 38k times ScrollView / Flatlist looping scroll Trying to create a carousel like component using Flatlist or scrollview. . This article shows you how to use FlatList component in react along with its basic structure, methods, props and examples. Summary: In this tutorial, you will learn how to use the React Native FlatList component to render a list of items efficiently. uvxtt 42s wsheyy lfz9n eml iah dbe vq7 hqx g9n