Xamarin.Forms error install package

Question

Package installer I get this error, gave this error in other packages

Error Could not install package 'Xamarin.GooglePlayServices.Ads 60.1142.0'. You are trying to install this package into a project that targets '.NETPortable,Version=v4.5,Profile=Profile259', 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.

Answer 1

You need to install this package into your Android project, not your Portable Class Library. It is a Android-only library that cannot work cross-platform. As you can see on the project's GitHub page:

Xamarin creates and maintains Xamarin.Android bindings for the Google Play Services Client Library

The library is not a C# library, but it rather contains bindings to native Java-based libraries and hence compatible only with Android.