咨询iOS视频分享处理时弹窗内圆形Spinner组件的官方名称

Hey there! Let me clear this up for you:

When you tap the Share button on a video in iOS and the system kicks off its processing workflow, that dialog with the circular spinner relies on a core UIKit component called UIActivityIndicatorView — this is the official, publicly documented name for the rotating circular loading indicator itself.

The full dialog you see is a system-generated modal view that Apple's UIActivityViewController framework automatically displays while handling tasks like video transcoding or preparing content for your chosen share destination. The spinner is the standard iOS control used universally to signal an ongoing background task.

Progress Screenshots #

• ![约10%进度的分享处理弹窗](Alt text: 系统弹窗包含旋转的圆形Spinner，下方标注"约10%"的处理进度)
• ![约70%进度的分享处理弹窗](Alt text: 系统弹窗包含旋转的圆形Spinner，下方标注"约70%"的处理进度)

内容的提问来源于stack exchange，提问作者Noitidart