IssueTracker

Project: platform/frameworks/support
Branch: androidx-main

commit 2a414bdafd7b0364bd69293ac86481482a1a0210
Author: Andrey Kulikov <andreykulikov@google.com>
Date:   Mon Mar 15 15:59:25 2021

    Make LazyPagingItems' itemCount and item getter observable
   
    This change removes hack recomposerPlaceholder we had to trigger the recompositions. It allows LazyPagingItems usage outside of official item/itemIndexed functions, for example with experimental LazyVerticalGrid.
    Also this should help with recompositions granularity. For example if we receive an event from Pager that the item 2 has been changed we can only recompose this item.
   
    Relnote: LazyPagingItems' itemCount and item getter are now observable which allows it to be used with LazyVerticalGrid as well
    Test: new tests in LazyPagingItemsTest
    Bug: 171872064
    Bug: 168285687
    Change-Id: Ie24468ec51660c144acab71e8e520ac09d00b023

M       paging/paging-compose/api/current.txt
M       paging/paging-compose/api/public_plus_experimental_current.txt
M       paging/paging-compose/api/restricted_current.txt
M       paging/paging-compose/build.gradle
M       paging/paging-compose/src/androidTest/java/androidx/paging/compose/LazyPagingItemsTest.kt
M       paging/paging-compose/src/main/java/androidx/paging/compose/LazyPagingItems.kt

https://android-review.googlesource.com/1531912

We are not going to have DiffUtil analogue.
We added keys api to handle reorderings smarter. See https://developer.android.com/jetpack/compose/lists#item-keys
In paging integration we auto diff only the visible elements: https://android-review.googlesource.com/c/platform/frameworks/support/+/1531912/