How to collect flow data after view is complete initialise in Android kotlin

Asked Jan 05 '22 at 20:54

Active Jan 06 '22 at 17:41

Viewed 497 times

Hey I am working on Kotlin flow. I am working in ViewPager2 with Paging 3 Library. I am getting some bug which caused indexing issue in ViewPager2. Someone suggested me use lifecycleScope.launchWhenCreated but it not working correctly. According to this answer The core issue is that are starting collection on Paging before ViewPager is ready to start binding the items. I tried this solution, but it didn't work well. I want to dig deeply, what the issue of this logic. I added my project link as well Github

lifecycleScope.launchWhenCreated {
  viewModel.dataList.collectLatest {
    adapter.submitData(it)
  }
}

edited Jan 06 '22 at 17:41

asked Jan 05 '22 at 20:54

Kotlin Learner

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could you explain more what is the bug you faced ? – Hussien Fahmy Jan 06 '22 at 11:10
@HussienFahmy thanks for replying me. The core issue is that I am starting collection on Paging before ViewPager is ready to start binding the items as per given [comment](https://stackoverflow.com/a/69813808/11560810). Can you check the given link – Kotlin Learner Jan 06 '22 at 11:42
@HussienFahmy this [link](https://youtu.be/FxMtgA-U79w) I attached video link. The problem is my view causing indexing issue. i.e. my view is not inflated properly and flow collecting starts. So i need something to untill view is inflated the collection will not start. – Kotlin Learner Jan 06 '22 at 11:46
are you using dataBinding ? – Hussien Fahmy Jan 06 '22 at 17:25
No viewbinding @HussienFahmy – Kotlin Learner Jan 06 '22 at 17:38
@HussienFahmy Can you please check out github link. This is my sample project – Kotlin Learner Jan 06 '22 at 17:38

How to collect flow data after view is complete initialise in Android kotlin

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