Fatal lint error: Why using recyclerView.setHasFixedSize(true) with wrap_content for size in scrolling direction gives fatal lint error?

Question

While trying to generate a signed APK for release. I found the following error.

This error occurred only after I updated my Android Studio to 4.1.3.

On inspection, I found that recyclerView.setHasFixedSize(true) if used with wrap_content for size in scrolling direction, gives fatal lint error. I have resolved it by removing that line in all activities but still, I need to know why is this error fatal now, there was no such error before the update.

score 2 · Answer 1 · answered Aug 01 '21 at 13:34

The error is based on the RecyclerView's height, not the items inside. I noticed this error didn't show for any of my viewbinding RecyclerViews, but shows up for my findById recyclerviews, even when height is match_parent. It turns out lint is not that smart. If you have any RecyclerView in your project that uses wrap_content and has the same id as your other recyclerviews, lint gets confused and will complain, even if your other layouts all use match_parent in their RecyclerView.

My fix was to rename the id for one of my RecyclerView causing the problem (a recyclerview inside a dialog, so it's necessary to use wrap_content in there)

Thanks a lot, this really helped me. – King Of The Jungle Dec 29 '21 at 13:09 — King Of The Jungle, Dec 29 '21 at 13:09

score 0 · Answer 2 · answered Apr 19 '21 at 16:26

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please refer this question you will get to know reason behind it. This question is already asked in some form.

Understanding RecyclerView setHasFixedSize

answered Apr 19 '21 at 16:26

Ankit Mishra

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my question is, why is it a fatal error after updating the IDE and not before? – Sweta Jain Apr 19 '21 at 16:33
because previous version of your IDE was not checking about this. This is not an error you can supress/ignore. – Ankit Mishra Apr 19 '21 at 16:35
my question is why is it "FATAL"? – Sweta Jain Apr 19 '21 at 16:37
is they said FATAL Error?? No they said fatal priority which is 5/10. – Ankit Mishra Apr 19 '21 at 16:38
No, it is a fatal error and IDE did not allow me to generate the APK, till I removed all the occurrences. – Sweta Jain Apr 19 '21 at 16:40
check out this https://stackoverflow.com/questions/28827597/when-do-we-use-the-recyclerview-sethasfixedsize/28828749 – Ankit Mishra Apr 19 '21 at 16:41

Fatal lint error: Why using recyclerView.setHasFixedSize(true) with wrap_content for size in scrolling direction gives fatal lint error?

2 Answers2