LithoView works incorrectly after upgraded to viewpager2

[wooyukit]

• I have searched existing issues and this is not a duplicate

Version

0.34

Issues and Steps to Reproduce

I upgraded my app fragment viewpager from ViewPager to ViewPager2. It only shows the first fragment page and other fragment pages keep blank.

Expected Behavior

Should display correctly like ViewPager widget.

[muraziz]

Hey @wooyukit , can you give bit more details here? If you can repro in our sample app and share that, it would make it easier for us to debug that.

[wooyukit]

I found that it is related to the incremental mount issue. Sometimes, the litho view wrongly detect if it is visible or not for example in the recyclerview with snap animation.

[colriot]

@wooyukit LithoView is not always able to understand if it's visible. Especially if its visibility was changed from the outside, like LV is in a container that is scrolled partially off the screen. So, sometimes you need to call notifyVisibleBoundsChanged(..) method manually

[wangbax]

I found this issue when i wan to upgraded viewpager2. Pls support early.

[colriot]

Hey! Have you checked out ViewPagerComponentSpec sample from the sample app? https://github.com/facebook/litho/tree/master/sample/src/main/java/com/facebook/samples/litho/viewpager

[wangbax]

@colriot I need mixed use litho and fragment , so i need warp litho in viewpager2 . ViewPagerComponentSpec can only support simple scene.

[mnayef95]

Any update or workaround?