通知主线程后台线程操作已完成的正确方法是什么?
我现在收到此错误:
Publishing changes from background threads is not allowed; make sure to publish values from the main thread (via operators like receive(on:)) on model updates.
这是我进行后台队列操作的地方:
class ImageLoader: ObservableObject {
//the thumbnail
@Published var image: UIImage?
//value to verify everything is loaded
@Published var isLoaded = false
private(set) var isLoading = false
func load() {
let dispatchQueue = DispatchQueue(label: "ThumbNailMaker", qos: .background)
dispatchQueue.async {
self.removeChar()
self.createThumbnailOfVideoFromRemoteUrl()
self.isLoaded = true //<--------------------- Here the error appears
}
尝试更换self.isLoaded = true
with
DispatchQueue.main.async { self.isLoaded = true }
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