iOS client for Grain
grain.social
ios
photography
atproto
fix: pull-to-refresh race with scenePhase auto-reload
When returning from background after 5+ minutes, onChange(scenePhase)
fired loadInitial which set isLoading=true. If that request hung on a
stale socket, pull-to-refresh hit the guard and silently returned.
Now loadInitial cancels any in-flight load before starting a new one.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
+23
-16
+23
-16
Grain/ViewModels/FeedViewModel.swift
+23
-16
Grain/ViewModels/FeedViewModel.swift
···
9
9
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private var cursor: String?
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private var hasMore = true
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+
private var loadTask: Task<Void, Never>?
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private let client: XRPCClient
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private let feedName: String
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private let actor: String?
···
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}
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func loadInitial(auth: AuthContext? = nil) async {
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-
guard !isLoading else { return }
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+
loadTask?.cancel()
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isLoading = true
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error = nil
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cursor = nil
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hasMore = true
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-
do {
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-
let response = try await client.getFeed(
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-
feed: feedName,
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actor: actor,
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camera: camera,
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location: location,
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tag: tag,
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auth: auth
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)
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galleries = response.items ?? []
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cursor = response.cursor
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-
hasMore = response.cursor != nil
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-
} catch {
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-
self.error = error
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+
let task = Task {
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+
do {
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+
let response = try await client.getFeed(
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+
feed: feedName,
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+
actor: actor,
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+
camera: camera,
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+
location: location,
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+
tag: tag,
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+
auth: auth
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+
)
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+
guard !Task.isCancelled else { return }
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+
galleries = response.items ?? []
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+
cursor = response.cursor
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+
hasMore = response.cursor != nil
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+
} catch {
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+
guard !Task.isCancelled else { return }
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+
self.error = error
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+
}
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+
isLoading = false
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}
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-
isLoading = false
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+
loadTask = task
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+
await task.value
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}
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func loadMore(auth: AuthContext? = nil) async {