Why is the axml editor not working?

Question

Android

I installed Xamarin Studio, then mono android, created an Android Application project.
I opened the axml file in a visual editor, and there is an error:

The Android SDK could not be found. Make sure path to the SDK...

. Well, I got into the options, there I indicated the path to the sdk and after clicking OK an exception was thrown:

System.NullReferenceException: An object reference does not point to an instance of an object.
at Xamarin.AndroidDesigner.AndroidDesignerSession.Refresh(Boolean asyncRefresh)
at Xamarin.AndroidDesigner.AndroidDesignerSession.Refresh()
at Xamarin.AndroidDesigner.AndroidDesignerSession.b__11()
at Xwt.Application.<>c__DisplayClass5.b__4()

How to solve it so that everything works?
PS When trying to build the application, there is also an error:

Could not locate Android SDK.

Answer 1

Did you use the standard installer?
You can try installing the SDK manually developer.android.com/sdk/index.html

Answer 2

Don't waste your time: throw out xamarin and install a normal IDE. Even if you solve this issue, others will appear. Very often, even their xamarin examples from the studio are not compiled.