I'm starting using Xamarin, and testing admob, but for now i can't do nothing.
Using windows 7, Xamarin Studio 5.7 free
I add in component manager, and give me this alert: "Some required packages era not referenced by the project", them suggest Add Packages, and them give me this result in package console:
Attempting to resolve dependency 'Xamarin.Android.Support.v4 (≥ 188.8.131.52)'.
Attempting to resolve dependency 'Xamarin.Android.Support.v7.MediaRouter (≥ 184.108.40.206)'.
Attempting to resolve dependency 'Xamarin.Android.Support.v7.AppCompat (≥ 220.127.116.11)'.
Adding 'Xamarin.GooglePlayServices 18.104.22.168' to PlimPlim.
Could not install package 'Xamarin.GooglePlayServices 22.214.171.124'. You are trying to install this package into a project that targets 'MonoAndroid,Version=v4.0.3', but the package does not contain any assembly references or content files that are compatible with that framework. For more information, contact the package author."
------ I find a possible solution, that is import dll into references throw .Net Assembly, but required me to use trial version or pay.