Caliburn.Micro和应用履历

Question

In my Windows Phone Silverlight 8.1 app I enabled the app resume (ActivationPolicy="Resume")

When the user re-open the app (using the main tile), the OnDeactivate method of the ViewModel is called after the OnActivation method.

Is it correct? How can I handle the app resume with Caliburn.Micro?

Here is the code of the ViewModel:

public class Page2ViewModel: Screen
{
    protected override void OnActivate()
    {
        base.OnActivate();

    }


    protected override void OnDeactivate(bool close)
    {
        base.OnDeactivate(close);

    }
}

Answer 1

This does not seem right. OnDeactivate is called when navigating away from a View. In your ViewModel there is no way to directly differentiate if it was activated from normal navigation or because of resuming.

Take a look at your Bootstrapper, you can override OnActivate and OnLaunch methods there that correspond to Application_Launching and Application_Activated . OnActivate is the one you want.

Answer 2

The problem was in the AppBootstrapper .

To handle the app fast resume, the Navigated and Navigating events must be subscribed in the CreatePhoneApplicationFrame frame.

In this repository the fix (see commit list for the history).