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saket / InboxRecyclerView

Build expandable descendant navigation, inspired by Google Inbox

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Error : Adapter needs to have stable IDs so that the expanded item can be restored across orientation changes.

SourabhSNath opened this issue · comments

commented

What is this error? I replaced my RecyclerView as shown in the example, but this error occurs. This error is also shown on the layout xml, I tried building the project anyway.

My RecyclerView is in a fragment, does that matter? Should I only use this on an activity?

commented

Stable IDs are required because while the content page is expanded, its associated list item's position can change in the adapter. When the page has to collapse, InboxRecyclerView finds the associated list item again in case its position has changed to avoid collapsing to the wrong location.

To make this work, you'll have to do two things:

  1. Override getItemId() in your adapter and calculate an ID for each item.
  2. Call setHasStableIds(true) on your adapter.
commented

Closing this due to inactivity. Feel free to re-open this.