Post

Telegram研究：头像获取流程

Posted
By
1 min read

ChatListItemNode -> setupItem -> AvatarNode.setPeer -> AvatarNode.ContentNode.setPeer ->

representation用户头像信息 PeerAvatar.peerAvatarImage -> peerAvatarImage -> peerAvatarImageData

根据id获取完整储存路径 -> postBox.mediaBox.resourceData -> MediaBox.resourceData(id: resource.id,…) -> storePathsForId(id) -> return ResourceStorePaths(partial: “(self.basePath)/(fileNameForId(id))_partial”, complete: “(self.basePath)/(fileNameForId(id))”)

如果文件存在，根据路径获取文件大小 FileSize.swift -> fileSize -> lstat(path, &value) -> try? Data(contentsOf: URL(fileURLWithPath: maybeData.path))

如果文件不存在，需要拉取文件

Display.ASImageNode： DisplayNode 一般静态图片 Display.ImageNode: DisplayNode 网络图片 Display.TransformImageNode: DisplayNode 动图 InstantPageUI.InstantPageImageNode: DisplayNode Components.WallpaperGalleryScreen.BlurredImageNode: ASDisplayNode –> BlurView –> BlurLayer

动画 UniversalVideoNode -> NativeVideoContentNode -> MediaPlayerNode -> MediaPlayerNodeLaye -> AVSampleBufferDisplayLayerContentLayer

Telegram, Telegram及Demo
Telegram im
This post is licensed under CC BY 4.0 by the author.