I need take screenshot of WebView while app in Background.But on iOS13 method "takeSnapshotWithConfiguration:completionHandler:" of WKWebView does not work. completionHandler never fire when app does background task.This works well on iOS12. Also it works on iOS13 while app in foreground.Reproduce: see demo project to reproduce https://github.com/Jnis/WebView-Snapshot. Also see videos there.Expected: takeSnapshotWithConfiguration:completionHandler call completionHandler with image while app is in backgroundActual result:[self.wkwebView takeSnapshotWithConfiguration:configuration completionHandler:^(UIImage * _Nullable snapshotImage, NSError * _Nullable error) { // this never call on iOS13 while app in background. But iOS12 works well.}];Thank you!
jnis
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Code to reproduce:
struct CrashView: View {
var body: some View {
ScrollView {
LazyVStack {
ForEach(0...100, id: \.self) { i in
LazyVGrid(columns: Array(repeating: .init(.fixed(100)), count: 3), content: {
ForEach(0...20, id: \.self) { i in
Color.red.opacity(Double(i + 1) / 20).frame(height: 300)
}
})
}
}
}
}
}
Important: it crashes on iOS 16.1 !!!
We have 21 grid item (3 item and 7 full lines) for every LazyVStack item.
Scroll it until 5 LazyVStack item. Start scrolling to top. It blinks and show incorrect count: you see that it shows 1 item in line, but it is impossible. If you continue scrolling app crashes.