Phone App不会保留在手机的导航堆栈中，但通过USB连接到VS时会保留

Question

My Phone App doesn't stay in the navigation stack on phone, but does when connected to Visual Studio via USB. When I run it 'to Device' from Visual Studio, I can go to another app and return to my app (which is still in the state I left it) - but when I run it on the phone by itself it closes when I go to another app and come back (via back button). I have a Lumia 928. (Universal app 8.1) Anybody else run across this behavior? Any thoughts on what I might be missing. It navigates fine forward and backwards within my app, and when run as a Device from VS, but not alone.

Answer 1

I was trying to serialize an object that serialization doesn't support. I trapped for that error and now the app behaves properly.

This link helped https://social.msdn.microsoft.com/Forums/en-US/3e24c556-3758-40d0-bd03-55e193538340/getnavigationstate-doesnt-support-serialization-of-a-parameter-type-which-was-passed-to?forum=winappswithcsharp