VerticalScroller fling motion does not match native Android behavior [147493715]

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ad...@google.com

created issue #1

Jan 10, 2020 06:40PM

Compose UI should match Android's native fling scrolling behavior, delegating to the platform for forward compatibility where possible.

Android's scrolling components, android.widget.Scroller and android.widget.OverScroller internally use the static clock provided by AnimationUtils, making it infeasible to use these components natively in Compose UI without changes.

This work will proceed in several steps:

Extract the sampled spline used by Scroller such that it can be used in a testable, clock-agnostic manner.
Implement a Compose UI DecayAnimation based on this extracted spline.
Make (2) the default behavior of VerticalScroller and similar rather than the exponential decay animation.
Apply the changes from (1) back to AOSP frameworks/base
Refactor (1) to use (4) when running on a new enough Android platform version for forward compatibility with any future Android platform changes

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ap...@google.com <ap...@google.com> #2Jan 22, 2020 12:43AM

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

commit 0154910724cdc44253af1d2f8cede76264783226
Author: Aurimas Liutikas <aurimas@google.com>
Date: Thu Jun 27 15:25:02 2024

Expand native target support for annotation and collection libraries

- Enable watchos and tvos download in importMaven
- Add support for watchos and tvos targets in AndroidXMultiplatformExtension
- Enable watchos and tvos in :annotation:annotation
- Enable linuxArm64, watchos, and tvos in :collection:collection

This work is required as we work towards setting up native stubs for
compose projects.

Test: ./gradlew collection:collection:publish
Bug: 349894318
Change-Id: Idfd1faa3a826bb91ee14722f7437bdcf99cf0018

M annotation/annotation/build.gradle
M buildSrc/private/src/main/kotlin/androidx/build/AndroidXMultiplatformExtension.kt
M buildSrc/public/src/main/kotlin/androidx/build/KmpPlatforms.kt
M collection/collection/build.gradle
M development/build_log_simplifier/messages.ignore
M development/importMaven/src/main/kotlin/androidx/build/importMaven/KmpConfig.kt

https://android-review.googlesource.com/3151736

ad...@google.com <ad...@google.com> Jan 27, 2020 05:59PM

Marked as fixed.

Issue 147493715

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ap...@google.com <ap...@google.com> #2Jan 22, 2020 12:43AM

ad...@google.com <ad...@google.com> Jan 27, 2020 05:59PM

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