ContentPage shows Toolbar background when set as MainPage, but only on Lollipop devices.

[mikepham]

Steps

1. Create ContentPage and set to MainPage.
2. Start app.

Expectation

Page should show without any Toolbar background.

[mikepham]

This is due to the CoordinatorLayout. There is now an option in the AppCompatFormsActivity in the form of the EnableCoordinatorLayout property. By default, this is false and does not surround the default Forms LinearLayout with a CoordinatorLayout.

However, turning it off means when the app is switched, there is a black bar above the app. Turning it on makes that go away, but then you get the Toolbar space allocated. There is no easy fix for this currently. It is suggested to set the EnableCoordinatorLayout to true (before the call to base.OnCreate) and avoid using just a normal ContentPage and instead opt for one of the navigation patterns.