badoo/Chatto

Visual bugs when changing many item's heights

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#614 建立於 2019年10月2日

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 (0 留言) (0 反應) (0 負責人)Swift (4,166 star) (561 fork)batch import
bughelp wanted

描述

When updating heights of multiple items (18 items in my example), I've got a visual bug - flickering effect with new (updated) items are flowing up from the bottom of collection and moving to some top position beyond the screen. I attached video when you can see it if you will look frame-by-frame. I also attached a screenshot of the middle state of this animation.

Video: Screen Recording 2019-10-02 at 18.08.22.mov.zip

貢獻者指南

技術棧
swift
領域
mobile
議題類型
bug
難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。
3
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
half day
活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。
stale
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
mostly clear
前置要求
SwiftiOS developmentChatto frameworkUICollectionView
新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。
30
研究方向
The issue describes a flickering effect when updating heights of multiple items in a chat collection. Investigate the layout and animation code in Chatto, particularly around height changes and the collection view's batch updates. Look at the Chatto framework's collection view layout implementation to identify potential causes of the flickering. Since the issue is from 2019 and unaddressed, consider updating dependencies or testing with newer iOS versions.