How to remove the Xamarin.Forms Navigation Bar?

NavigationPage.SetHasNavigationBar(this, false);

The above mentioned is not the good solution.

By using this code it disable the NavigationBar present in the page.

We can achieve the real solution only by creating a NavigationRenderer for NavigationPage for Android.

void RemoveAppIconFromActionBar()
{
    var actionBar = ((Activity)Context).ActionBar;
    actionBar.SetIcon (new ColorDrawable (Color.Transparent.ToAndroid ()));
}

Refer the Github for the complete code snippet : https://gist.github.com/Vaikesh/f86d1968c8166519f102#file-customnavigationrenderer-cs

You can remove navigation bar from Xaml using Xamarin.Forms using below code.

NavigationPage.SetHasNavigationBar (this, false);

Where this stands for current page / form instance.

Hope this helps!