对于android实现，请将以下内容添加到您的MainActivity.cs中:

For the android implementation, add the following to your MainActivity.cs:

global::Xamarin.Forms.Forms.SetTitleBarVisibility(Xamarin.Forms.AndroidTitleBarVisibility.Never);

对于iOS，该过程需要自定义渲染器，但这确实很基本:

For iOS, the process requires a custom renderer, but it's really basic:

public class iOSCustomMobilePageRenderer : PageRenderer
{
    public override void ViewWillAppear(bool animated) {
        base.ViewWillAppear(animated);


        if (ViewController != null && ViewController.ParentViewController != null && ViewController.ParentViewController.NavigationController != null) {

            if (ViewController.ParentViewController.NavigationController.NavigationBar != null)
                ViewController.ParentViewController.NavigationController.SetNavigationBarHidden(true, false);
        }
    }
}