flutter pub add spinner根據套件公開資料產生的選型評估，僅供參考。
一個輕量級的Flutter套件，提供一個簡單的動畫旋轉器，以循環方式在預定義的固定大小小部件列表中切換。非常適合用於指示載入狀態或持續進行的過程，並提供流暢的視覺反饋。該旋轉器可自訂且容易整合到任何介面中，提供乾淨高效的方式來增強異步作業期間的使用者體驗。
以下為關聯原始碼儲存庫的 README 原文快照，最新內容請造訪原始碼儲存庫。
This flutter package implements a simple Spinner animation that cycles through any number of fixed size child widgets. Useful for selecting a random word from a list and displaying it to a user.
It can animate vertically, up or down:
Or horizontally, left or right:
To use this plugin, add spinner as a dependency in your pubspec.yaml file.
See the example project in the repo for a quick demo
Spinner has several useful parameters. You can see them used in the example file
duration: change the duration of the animation
animationSpeed: change how fast the animation moves and what index the animation lands on
spinDirection: change the direction of animation
containerCount: number of containers that should appear on screen
containerSize: for vertical scroll, this is the width of each container produced by the builder function. For horizontal, this is the height
builder: a function that takes in an integer and returns a widget with height/width of containerSize
curve: the curve for the animation to follow. Defaults to easeInOutCubic
callback: a function called when the animation completes
zoomFactor: optional zoom in by this amount during the animation. It looks something like this, with a zoom factor of 1.5:
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