Sort by last modified datetime

[rignaneseleo]

Hi, I'm using the option sortDelegate: SortDelegate.common and the list of the pictures is apparentely sorted by datetime but if I take a picture and then download from Google Photos a picture from 2010, it won't be in the top of the list.

I'd like to have the option to sort by last modified datetime, like the Android recent pics picker does. Is it possible?

Thanks

[CaiJingLong]

This needs to check if the system provides this part of the metadata, because the android metadata is stored in the database and ios is PHPhoto api.

If the native part provides this part of the data, I will expose it to flutter.