You mean you want to query the server from xamarin or implement the full text search itself on Couchbase mobile. The latter will not be possible until 2.0.
Not as part of the mobile sdk. Mobile does not interact directly with Couchbase server and there is no mechanism in sync gateway now to pass this view back to the client. It’s doable but you have to query the view manually. It’s not recommended to expose Couchbase server to the public internet so you’d need to set up a server to do these queries for you and return them.
Not that I know of, but the basics are just setting up some web requests to hit the REST API of Couchbase Server (or ideally, an application server that sits in front of it)
If you’ve created services with ASP.NET WebAPI or MVC and you understand the Couchbase .NET SDK, there’s not much to it. If you need help with anything involving the Couchbase Server SDK, I’d recommend you ask over on that forum: https://www.couchbase.com/forums/c/net-sdk