沙马林。PageRenderer中的表单UINavigationBar

调整 Frame 属于 View 和 NavigationBar 在页面渲染器中。

为名为CustomPageRender的页面创建自定义呈现器。

[assembly: ExportRenderer(typeof(Page), typeof(CustomPageRender))]
namespace FormsApp2.iOS
{
class CustomPageRender :PageRenderer
{
    public override void ViewWillLayoutSubviews()
    {
        base.ViewWillLayoutSubviews();
        if (this.NavigationController != null)
        {
            CGRect rect = View.Frame;
            rect.Y = -44;
            View.Frame = rect;

            CGRect NavRect = NavigationController.NavigationBar.Frame;
            NavRect.Y = UIScreen.MainScreen.Bounds.Height - 44;
            NavigationController.NavigationBar.Frame = NavRect;
        }
    }
}
}