如何在Apple Watch的扩展代理中访问SwiftUI内容视图？

Question

应用激活后，我需要在loadData中调用ContentView。 ExtensionDelegate是处理诸如applicationDidBecomeActive之类的应用程序事件的类。但是我不明白如何在ExtensionDelegate中使用ContentView。

这是我的ContentView：

struct ContentView: View {

    let network = Network()

    @State private var currentIndex: Int = 0
    @State private var sources: [Source] = []

    var body: some View {
        ZStack {
            // Some view depends on 'sources'
        }
        .onAppear(perform: loadData)
    }

    func loadData() {
        network.getSources { response in
            switch response {
            case .result(let result):
                self.sources = result.results

            case .error(let error):
                print(error)
            }
        }
    }

}

还有ExtensionDelegate：

class ExtensionDelegate: NSObject, WKExtensionDelegate {

    func applicationDidFinishLaunching() {

    }

    func applicationDidBecomeActive() {
        // Here I need to call 'loadData' of my ContentView
    }

    func applicationWillResignActive() {
    }
...

Answer 1

我认为最简单的解决方案是使用通知

在'stream does not contain image data or is null.'

中

ContentView

和let needsReloadNotification = NotificationCenter.default.publisher(for: .needsNetworkReload) var body: some View { ZStack { // Some view depends on 'sources' } .onAppear(perform: loadData) .onReceive(needsReloadNotification) { _ in self.loadData()} }

中

ExtensionDelegate

和共享中的某个地方

func applicationDidBecomeActive() {
    NotificationCenter.default.post(name: .needsNetworkReload, object: nil)
}