Single reusable map instance

[AAverin]

Having many places where map can be displayed, it's very expensive to create new instance every time.
Is there some way in library of Flutter in general to somehow have single map instance that would be lazy initialized and later reused everywhere, just calling onMapCreated() callback when it's displayed?

[AAverin]

Would be great to get any update on this issue. How is this solved in Android and iOS Mapbox SDK? Can we reuse any approach?

[m0nac0]

@AAverin Two potential hurdles I can think of right now: some users may want to instantiate more than one map at the same time, so we'd have to always keep one map instance around and be able to instantiate more. But also other users expect the memory to be released when the map isn't shown anymore, so making the map reusable would have to be configurable somehow.
Have you tried wrapping the MapboxMap widget in awidget with AutomaticKeepAliveClientMixin or something similar in flutter to make sure the widget doesn't get disposed?

[AAverin]

I am now struggling with this exactly. AutomaticKeepAliveClientMixin is a bit confusing to understand.
I have a tab with the map, and I am now keeping this whole tab alive. Problem is, this tab is supposed to still update once in a while, so I do need to somehow reset this keepAlive.
I was also thinking to wrap the while MapboxMap into AutomaticKeepAliveClientMixin, but then I have to pass all the callbacks through the state, this would mean there will be no way to change after it was created the first time.
The whole point here is to have a map that can be modified without re-creating it all the time

[AAverin]

This, indeed, needs to be configurable somehow, because different users will have different needs.
For my app specifically, I have a common list of items, and click on every item opens another screen with 3 tabs, one of which is a map. Potentially, I can have hundreds of maps in the app and initialising it every time user opens the tab is very expensive, especially taking into account that user might switch between tabs on the inner screen many times.
So to make it work, I really need some way to keep the same map alive and reuse it everywhere. But, at the same time, I need to clean the state because I have markers on the map or I might need to change the map style.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.