Android_guides: Write Kotlin version of code samples.

👍

Thanks for reaching out about this. I am not sure of the best way to go about this given how many guides there are and how noisy it would be to have two languages on the same page.

I would love to see (as a start), a separate Kotlin language guide primer page created on the wiki which compares the Java vs Kotlin way of coding common files and actions (i.e Activity, Fragment, Intent). For now, let's create that as a separate Kotlin page and we can expand later from there.

That is a fair concern about the notes getting noisy. So I will go ahead and create new Kotlin guide content and then add the link to it here for review.

Sounds good, thanks for putting together a first draft. I'm sure people will appreciate having a clear, concise Kotlin primer available. We can link to other helpful Kotlin resources as well.

Draft available now https://hackmd.io/s/H12nvIMQ

@savekirk You did an excellent job, the draft looks great. Here's the first published version. I've added this to the "Getting Started" section on the home page as well. Would love for others to take a look at continue to add / improve to the guide as well. We've announced the guide here. I've added some attribution to the guide indicating that you are the original author, thanks for putting that together.

I wish github wiki had a "native" way to create a "language toggle" in guides. We have this same issue with iOS (Swift vs Obj-c)

I do think the first place to start is actually documenting how to use Kotlin with Gradle given this announcement (http://www2.gradle.com/e/68052/blog-kotlin-meets-gradle-/72yb5y/171267988). It will hopefully be far easier for new people to learn how to use Kotlin than Groovy syntax.

Gradle buildscript with Kotlin is not yet ready for prime use. We might want to wait till they have stabilized it.