Singleton class in domain to manage configuration changes

[rt4914]

Currently in exploration player and question player, on orientation change the application does not retain the user input answer in InputInteractions.
To manage this effectively, we should introduce a singleton class in domain layer which will be linked to pending answer such that we can save information to this singleton class as soon as the input answer changes and again we can fetch this information back on configuration change.

[BenHenning]

NB: we should keep this solution specific to interactions now rather than developing a general-purpose replacement to savedInstanceState (since it's not clear that we actually want that yet).

[FareesHussain]

@rt4914 I would like to work on this, Is there any similar implementation for reference

[rt4914]

@rt4914 I would like to work on this, Is there any similar implementation for reference

@FareesHussain No we don't have any similar implementation.

[FareesHussain]

@BenHenning I've tried to understand working of StatePlayerRecyclerViewAssembler

Here in this issue we need to solve the following issues based on addInteractionSupport in StatePlayerRecyclerViewAssembler

• text and error message in [FractionInteractionView.kt]
• list of selected checkboxes in [SelectionInteractionView.kt]
• text(integer) and error msg for [NumericInputInteractionView.kt]
• text and error message for [RatioInputInteractionView.kt]
• text for [TextInputInteractionView.kt]
• list for drag & drop [DragDropSortInteractionView.kt]
• list for drag & drop with merging [DragDropSortInteractionView.kt]
• selected image in the [ImageRegionSelectionInteractionView.kt]

So for this issue i need to save and restore the above infomation using onSavedInstance in the StateFragmentPresenter and StateFragment

but how will i know the which type of InputInteraction is used in a particular StateFragment

[BenHenning]

I think we want to close this as 'Not planned' since it's being replaced by #4470 (which is a different solution) @vrajdesai78.