ios - 如何，Xamarin iOS 中的 applicationDidBecomeActive？

Question

如何在 Xamarin iOS 中执行此操作？

ViewDidAppear is not called when opening app from background

下面的链接提到了 AppDelegate 中 Xamarin 的 OnActivated 方法，但我如何订阅我的 ViewController 以便它知道应用何时从后台返回？

https://forums.xamarin.com/discussion/10594/where-is-applicationdidbecomeactive-in-xamarin-ios

Answer 1

    NSObject notificationObserver = NSNotificationCenter.DefaultCenter.AddObserver (UIApplication.DidBecomeActiveNotification, DoStuff);

    private void DoStuff (NSNotification a_notification)
    {
        // DO STUFF HERE
    }