NavigationComponents-Tutorials | Navigation Components to learn using nav graphs | Navigation library
kandi X-RAY | NavigationComponents-Tutorials Summary
kandi X-RAY | NavigationComponents-Tutorials Summary
Add, navigation graph and navigate to fragments with actions and animations. Nested navigation graphs, NavHostFragment and navigation. Nested navigation with a NavHostFragment and back press handled with OnBackPressedCallback. Set navigation with toolbar, NavigationView and use top menu buttons to navigate. BottomNavigationView with simple navigation. BottomNavigation with extension to create individual NavHostFragments and listen back stack changes. Examine memory leaks when extension function setupWithNavController for BottomNavigationView is inside a fragment. ViewPager2 inside a fragment with single navigation graph, navigates from the fragment ViewPager2 is in to next one. Same tutorial as the previous one but data binding used this time to examine and solve memory leaks due to data binding. ViewPager2 navigation with each page has it's own back stack or fragment that wraps/contains NavHostFragment. ViewPager2 navigation with each page has it's own back stack or fragment that wraps/contains NavHostFragment. ViewPager2 inside an Activity, and topbar title and current NavController is set using a liveData(This does not work after rotation). ViewPager2 and fragments with their own Toolbar, FragmentTransactionCallback is used for navigating ViewPager2 pages back stack properly. ViewPager2 navigation when both it's child fragments and parent fragment have Toolbar of their own, and navigation from differnt layers. ViewPager2 and TabLayout complex navigation with changing navigation in fragments different layers of navigation. BottomNavigationView using ViewPager2 to have tabs with their own back stack. BottomNavigationView navigation through it's tabs, and navigating ViewPager2 is inside a tab of BottomNavigationView. Using REST api, complex navigation with layers(Total 3 layers of navigation) when ViewPager2 is inside a tab of BottomNavigationView. Implementation of Dynamic Feature Module navigation, passing data and using SavedStateHandle to get data on back press. Using REST api, complex navigation with layers with ViewPager2 in BottomNavigationView and Dynamic Feature Modules.
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QUESTION
At first, i had the issue for ViewPager2
inside a tab of BottomNavigationView
and data binding , data binding also leaks with ViewPager2
and should be nulled in onDestroyView
, leaking and managed to narrow the issue to ViewPager2
while navigating from fragment that contains ViewPager2 to another fragment using findNavController().navigate
.
Here is how it occurs, it occurs when i navigate to another fragment that replaces the current one with ViewPager2.
Here is the code
...ANSWER
Answered 2020-Oct-14 at 07:03Removing adapter from ViewPager2 in onDestroyView
method of fragment solved the memory leak issue with FragmentStateAdapter
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