android - MvvmCross: how to correctly handle rotation when displaying alert/progressbar -

when android device rotated, activity recreated.

if display alert/progress bar mvvmcross view model (or else requiring living activity instance), recommended way of handling rotation?

-----added example-----

currently working using mvp style.

presenter has reference view interface, , can call methods view.displaydialog, view.displayerror or view.displayprogress.

android implementation this:

var dialog = alertdialog.builder(this) 

or

toast.maketext(basecontext, message, toastlength.long); 

or

_progressdialog = new progressdialog(this); _progressdialog.settitle(title); _progressdialog.setmessage(message); _progressdialog.setcancelable(false); _progressdialog.show(); 

in these cases reference context (i.e. activity) necessary.

now, moving mvvm style , mvvmcross, how change kind of code?