h6ah4i/android-advancedrecyclerview

Group collapse animation

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#244 opened on 2016年5月11日

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help wantedquestion

説明

I've been using a custom implementation of this library for a while (so just downloading the latest version would overwrite my customizations).

See the animated GIF below. When collapsing, the "Lab" group disappears and then shows up under "Exams" instead of smoothly moving up beneath it. This used to be a much smoother transition and I'm wondering if someone can help me figure out what's changed in recent Android updates and which classes from this library I need to update to correct this. I've already gone through and tried updating the animator classes, but to no avail. I'd appreciate any tips. Thanks.

Animation of behavior - GIF

コントリビューターガイド

技術スタック
java
領域
mobile
Issue 種別
bug
難度新しい貢献者にとっての実装難度です。1 は非常に小さな変更、5 は専門的な作業です。
3
推定時間経験ある貢献者が調査、実装、テスト、pull request 準備にかけるおおよその時間範囲です。
half day
活動状況Issue が今どれだけ取り組みやすいかを示します。新しい、活発、古い、ブロック中、またはメンテナー入力待ちなどです。
stale
明確さ期待される変更、受け入れ条件、次の手順がどれだけ明確かを示します。
needs investigation
前提条件
Android RecyclerView animationsItemAnimator API
初心者向け度初回貢献者にどれだけ取り組みやすいかを 1-100 で推定したスコアです。
30
調査方針
Investigate the ItemAnimator and related animator classes in the library (e.g., `ExpandableItemAnimator` or `AdvancedItemAnimator`). Compare the current implementation with earlier versions to identify what changed in the animation behavior. The issue mentions a regression from a custom implementation; look at recent commits around the library's animation files. Reproduce the collapse animation and trace the animation sequence to find where the smooth transition is broken.
Group collapse animation · h6ah4i/android-advancedrecyclerview#244 | Good First Issue