Flatlist not updating on state change hooks, Takes an item from dataand renders it into the list

Flatlist not updating on state change hooks, Sep 1, 2018 · Thanks Anwar Gul for your reply, I have made changes in my code accordingly but still not be able to reload my FlatList after changing values in array. Actual Behavior it shows and disappear quickly on data changed. If I call a function of the parent inside a rendered item of my flatlist to change a state, the state isn't updated. When a user submits this information by pressing a button, you expect the FlatList to display the newly added item immediately. The docs for FlatList say "This is a PureComponent which means that it will not re-render if props remain shallow- equal. state} to FlatList we make sure FlatList itself will re-render when the state. 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. Provides additional metadata like index if you need it, as well as a more generic separators. THE QUESTION However, seeing as I change an ID of the Sep 11, 2017 · Steps to Reproduce set refreshing state to true then call api, but refresh indicator on flatList not always automatically pull down api back then data changed, it pull down at a blink, set refreshing state to false Expected Behavior loading indicator should show right after api called. Apr 18, 2019 · However, the FlatList does not re-render, like the data did not change. However, it only appears after you interact with the TextInput or Dec 9, 2025 · In this blog, we’ll demystify why `onEndReached` fails, dive into common pitfalls (like state update mishaps and misconfigured props), and walk through step-by-step solutions to fix these issues. Apr 11, 2019 · I got a problem with my state update, when using FlatList. In the previous article, we optimized FlatList to prevent unnecessary re-renders when updating list item values. This time, we’ll tackle another common issue: avoiding re-renders when adding or removing items. May 31, 2018 · By passing extraData={this. Mar 14, 2025 · This post is a follow-up to Don't Re-Render All FlatList Items. selected changes. Apr 13, 2021 · This is a quick video to show you how to re-render your FlatList component when you change the state. I used a HOC before and a render prop with same the behavior and it was working as expected. This includes the data prop and parent component state. May 31, 2017 · The FlatList docs says that: This is a PureComponent which means that it will not re-render if props remain shallow- equal. In this article, we will explore effective methods to ensure your FlatList updates correctly when its data changes. It is very tricky because multiple things can go wrong but what you need to do is first you . Make sure that everything your renderItem function depends on is passed as a prop that is not === after updates, otherwise your UI may not update on changes. " Are you following this advice? Sep 15, 2021 · When you are updating the currentInterests based on previous value, React doesn't recognises such a change because you are simply assigning myInterests with your currentInterests. Takes an item from dataand renders it into the list. updateProps function which let you set whatever props you want to change the rendering of either the leading separator or trailing separator in case the more common highlight and unhighlight (which set th Dec 17, 2024 · FlatList is a powerful component for displaying lists of data, but it requires a specific approach to trigger re-renders when data changes. What you want to do is to copy that array and assign it to myInteresets and then update your values to the new copied array.


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