VS Android App (Xamarin) Navigation Drawer App - Add Activity - visual-studio

Question

I have used VS 2017 to create an Android App (Xamarin) Navigation Drawer App. I have searched the internet for an example of how to add a new activity to the app that uses the already created Navigation Drawer but have been unsuccessful. Any idea's on how to add an activity?
Thanks
Paul.
public bool OnNavigationItemSelected(IMenuItem item)
{
int id = item.ItemId;
if (id == Resource.Id.nav_camera)
{
// Run a new activity here!
}
else if (id == Resource.Id.nav_gallery)
{
}
else if (id == Resource.Id.nav_slideshow)
{
}
else if (id == Resource.Id.nav_manage)
{
}
else if (id == Resource.Id.nav_share)
{
}
else if (id == Resource.Id.nav_send)
{
}
DrawerLayout drawer = FindViewById<DrawerLayout>(Resource.Id.drawer_layout);
drawer.CloseDrawer(GravityCompat.Start);
return true;
}

Answer 1

From here, you can see this:
If your app switches out content based on which navigation menu item the user selects, you should consider using fragments in the main content area. Swapping fragments when you navigate from the navigation drawer allows for a seamless drawer animation, because the same base layout stays in place.
Official suggest us use fragment in the main content area.
If you want to start a new Activity, you need create a Activity and create a layout for it, like Activity1 :
[Activity(Label = "Activity1")]
public class Activity1 : Activity
{
protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
// Create your application here
SetContentView(Resource.Layout.layout1);
}
}
layout1:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="new Activity" />
</LinearLayout>
And then start it:
if (id == Resource.Id.nav_camera)
{
Intent intent = new Intent(this, typeof(Activity1));
StartActivity(intent);
}
This will open a new Activity, and in the new Activity, there is no DrawerLayout.