Xamarin.Forms MasterDetailPage override IsPresent -

i tried set masterdetailpage display masterpage on tablet layout:

    public mainpage()     {         initializecomponent();         if (device.idiom == targetidiom.phone)         {             this.masterbehavior = masterbehavior.popover;         }         else         {             this.masterbehavior = masterbehavior.split;         }     } 

however, hamburger icon still displayed , when clicking on error saying can't change ispresented when setting split. how override ispresented property? trying bind method ispresentedchanged, event fired after ispresented value changed, not before - still exception.

i can't make comment, have had put answer.

can set ispresented = true, before set behaviour split?

as should make master page visible, , not hamburger icon.