2023-05-23
3211
#react native
Hussain Arif
62541
May 23, 2023 ⋅ 11 min read

A deep dive into React Native FlatList

Hussain Arif Hussain is a CS student in Pakistan whose biggest interest is learning and teaching programming to make the world a better place.

Recent posts:

Using ElectricSQL to build a local-first application

ElectricSQL is a cool piece of software with immense potential. It gives developers the ability to build a true local-first application.

Rahul Padalkar
Dec 1, 2023 ⋅ 11 min read
Using Rust And Leptos To Build Beautiful Declarative User Interfaces

Using Rust and Leptos to build beautiful, declarative UIs

Leptos is an amazing Rust web frontend framework that makes it easier to build scalable, performant apps with beautiful, declarative UIs.

Eze Sunday
Nov 30, 2023 ⋅ 10 min read
5 Best JavaScript Multi-Dimensional Array Libraries

5 best JavaScript multidimensional array libraries

Learn more about the 5 best JavaScript libraries for dealing with multidimensional arrays, such as ndarray, math.js, and NumJs.

Pascal Akunne
Nov 30, 2023 ⋅ 4 min read
Dom Scandinaro Leader Spotlight

Leader Spotlight: Leading by experience with Dom Scandinaro

We spoke with Dom about his approach to balancing innovation with handling tech debt and to learn how he stays current with technology.

Jessica Srinivas
Nov 30, 2023 ⋅ 6 min read
View all posts

7 Replies to "A deep dive into React Native <code>FlatList</code>"

    1. Anonymous functions for the ‘keyExtractor’ prop are alright. This is because they don’t get re-rendered repeatedly, so there’s no performance costs

  1. Certainly everything but a deep dive.. you just showed an example of usage. As for FlatList, the most buggy component in all React Native, I highly recommend you not to talk about FlatList as a “rock solid” component. I was excepting a deep dive into the component itself and how to avoid at least the rendering issues, the images not loading within the FlatList items etc.. just a very beginner’s guide, which is great for beginners, but change the title, it’s totally misleading.

    1. Hi Vahradrim, thank you for taking the time to read my post! I didn’t research properly and that’s my fault.
      I’ve now updated my article and would like to know your thoughts.

  2. Hi, what if the array that im showing is extracted from firebase and I don’t know what is the key value pair of the object, how do we use FlatList as the above examples it is known the keys of each key-value pair?

  3. Hey, thanks for the article. Here is another interesting issue with flat list.
    I have a View, containing flatlist inside a react-navigation tab bar.
    Everything works fine, but when I add a button before flatlist, like this

    ..
    ..

    the last element in the flatlist seems to be hidden behind the tab bar.
    Trying to figure out what is wrong.
    So would be interesting to read about best practises, like don’t use other elements except flatlist on a screen etc.

Leave a Reply