Touch slop should be taken into account before dispatching nested pre scroll [139530818]

Fixed

Bug

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Description

je...@google.com

created issue #1

Aug 16, 2019 03:33PM

dispatchNestedPreScroll is called without waiting for the touch slop, which means that unintended movement might occur.

In the worst case it can make it very hard to scroll in the perpendicular direction of the direction in which pre-scroll is consumed, because as soon as pre scroll starts consuming, nested scrolling (should) lock the scroll in that direction.

Comments

je...@google.com <je...@google.com> Aug 20, 2019 02:53PM

Accepted by je...@google.com.

ap...@google.com <ap...@google.com> #2Aug 22, 2019 01:52PM

To use Lifecycle 2.8.0-alpha03, ensure you are using at least Compose UI 1.7.0-alpha05.

The issue is happening because, starting from Lifecycle 2.8.0-alpha03 and Compose UI 1.7.0-alpha05, LocalLifecycleOwner has been moved from androidx.compose.ui to lifecycle-runtime-compose, as outlined in their respective release notes. For compatibility reasons, you must update both dependencies.

For context, note these changes were made to enable the utilization of its Compose-based helper APIs beyond Compose UI (such as in Molecule). Further information can be found at b/328263448.

If the issue persists even after updating your Compose UI, please let us know.

Edit: please see https://issuetracker.google.com/336842920#comment8 for a workaround.

je...@google.com <je...@google.com> Aug 28, 2019 05:22PM

Marked as fixed.

Issue 139530818

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Comments

je...@google.com <je...@google.com> Aug 20, 2019 02:53PM

ap...@google.com <ap...@google.com> #2Aug 22, 2019 01:52PM

je...@google.com <je...@google.com> Aug 28, 2019 05:22PM

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