StateRestorationPolicy

Kotlin |Java

class StateRestorationPolicy

kotlin.Any
↳	kotlin.Enum<androidx.recyclerview.widget.RecyclerView.Adapter.StateRestorationPolicy>
	↳	androidx.recyclerview.widget.RecyclerView.Adapter.StateRestorationPolicy

Known Direct Subclasses

RecyclerView.Adapter.StateRestorationPolicy.ALLOW, RecyclerView.Adapter.StateRestorationPolicy.PREVENT, RecyclerView.Adapter.StateRestorationPolicy.PREVENT_WHEN_EMPTY

RecyclerView.Adapter.StateRestorationPolicy.ALLOW	Adapter is ready to restore State immediately, RecyclerView will provide the state to the LayoutManager in the next layout pass.
RecyclerView.Adapter.StateRestorationPolicy.PREVENT	RecyclerView will not restore the state for the Adapter until a call to `setStateRestorationPolicy(StateRestorationPolicy)` is made with either `ALLOW` or `PREVENT_WHEN_EMPTY`.
RecyclerView.Adapter.StateRestorationPolicy.PREVENT_WHEN_EMPTY	Adapter is ready to restore State when it has more than 0 items.

Defines how this Adapter wants to restore its state after a view reconstruction (e.g. configuration change).

Summary

Enum values
`ALLOW` Adapter is ready to restore State immediately, RecyclerView will provide the state to the LayoutManager in the next layout pass.
`PREVENT` RecyclerView will not restore the state for the Adapter until a call to `setStateRestorationPolicy(StateRestorationPolicy)` is made with either `ALLOW` or `PREVENT_WHEN_EMPTY`.
`PREVENT_WHEN_EMPTY` Adapter is ready to restore State when it has more than 0 items.

Enum values

ALLOW

enum val ALLOW : RecyclerView.Adapter.StateRestorationPolicy

Adapter is ready to restore State immediately, RecyclerView will provide the state to the LayoutManager in the next layout pass.

PREVENT

enum val PREVENT : RecyclerView.Adapter.StateRestorationPolicy

RecyclerView will not restore the state for the Adapter until a call to setStateRestorationPolicy(StateRestorationPolicy) is made with either ALLOW or PREVENT_WHEN_EMPTY.

PREVENT_WHEN_EMPTY

enum val PREVENT_WHEN_EMPTY : RecyclerView.Adapter.StateRestorationPolicy

Adapter is ready to restore State when it has more than 0 items. RecyclerView will provide the state to the LayoutManager as soon as the Adapter has 1 or more items.