c# - Display orientation change event for tablet devices

Question

I am looking for an event when the orientation of the device changes from landscape to portrait or vice versa. And I tried this (https://docs.microsoft.com/en-us/uwp/api/windows.graphics.display.displayinformation.orientationchanged?view=winrt-19041) -

 Windows.Graphics.Display.DisplayInformation.GetForCurrentView().OrientationChanged += Reader_OrientationChanged;
 private void Reader_OrientationChanged(Windows.Graphics.Display.DisplayInformation sender, object args)
 {
 }

But the Reader_OrientationChanged method is never called. Windows.Graphics.Display.DisplayInformation.GetForCurrentView().CurrentOrientation gives the write display orientation value, but for some reason the event never fires.

Am I missing something here, how to make this event work? Or is there any other way to subscribe to an event for display orientation change?

I also tried SimpleOrientationSensor.GetDefault().OrientationChanged, but SimpleOrientationSensor.GetDefault() returns null on the simulator so can't test if it works as expected.

Answer 1

等待大神解答