eclipsesource
Problem with CollectionView Part 1
Problem description
Hello everyone, i noticed 3 problems on TabrisJs CollectionView. this is the first problem
Since version 3.4+ the CollectionView is not as fast as before, there's clearly a loss of performance, I compared my collectionView of image and text list (the picture below) and it's much slower than the collectionview of applications like Whatsapp, Telegram (which has the fastest CollectionView in the world), despite the optimizations made on my images (resizing to the exact dimensions of the view, etc...). please, please, please can you still optimize CollectionView(recycleView) on Android? it's one of the most used widgets in the world and it's a big weakness for Tabris.
Here are some links I found if it can help you on how to optimize RecyclerView and especially the source code of Telegram's RecyclerView, inside it mentions what makes it so fast.
https://github.com/DrKLO/Telegram/blob/master/TMessagesProj/src/main/java/org/telegram/ui/Components/RecyclerListView.java
https://stackoverflow.com/questions/44988515/recycler-view-laggy-behaviour (this link shows how Telegram fixed the problem of the first slow scroll on the RecyclerView)
https://heartbeat.fritz.ai/adding-fast-scroll-to-recyclerview-in-android-5a963e2b509d
another link for scroll optimization on a RecyclerView.
Expected behavior
Fast recyclerView
Environment
- Tabris.js version: 3.8 last Nightly
- Device: Huawei P10 Lite, 3GB RAM, Octo-core 2.3Ghz
- OS: Android 8
https://user-images.githubusercontent.com/12398336/107476754-c7f57f80-6b76-11eb-905d-39aa269787aa.mp4
In this video you can see how fast Telegram's collectionView is, Tabris' collectionView can't even be half as fast, and it doesn't have the functionality of android fastScroll's recycleView, Which is amazing because we all know that TabrisJs is super fast for all the other widgets and operations