Neko: The Clojure/Android Toolkit
Forked by Alexander Yakushev as part of Google Summer of Code 2012 participation project.
Neko is a toolkit designed to make Android development using Clojure easier and more fun. It accomplishes this by making adding Clojure support to your Android project easy and providing functional wrappers and alternatives to Android’s Java API.
I thank Remco van 't Veer for his https://github.com/remvee/clj-android[clj-android] library which was one of the pioneer attempts to bring Clojure to Android development. My neko fork is inspired by ideas from his project and borrows some actual implementation code. Features
Note that the libraries are under heavy development. APIs are subject
to change. In particular,
The toolkit comes as two components:
Simplified build support for Clojure using Android’s Ant-based build system, and
The following Clojure libraries:
neko.compilationhelps set up dynamic compilation.
neko.contexthelps retrieve resources from the application’s context.
neko.listenerscontains namespaces that take the tedium to adding callback code to various widgets.
neko.loginterns functions that make logging from your code clean and simple.
neko.threadingwill contain utilities to manage asynchronous tasks and working with UI threads.
neko.uicontains tools to define and manage Android UI in Clojure without touching the XML layouts.
Using Neko requires the following:
- Clojure 1.2 or newer
Clojure 1.2 works on Android 2.2 and newer. Clojure 1.3 and newer work on Android 2.3 and newer.
If you would like to use dynamic compilation with Android 2.3 and newer, use the Clojure available from the
androidbranch from this repository on GitHub. This branch is based off the latest Clojure development version.
If you would like to use dynamic compilation, but must support Android 2.1, you will need to use the version from branch
android-1.2.x, available here. This is based off of Clojure 1.2.1.
- Android SDK Tools
Neko has been developed with the latest revision of the Android SDK tools, and is compatible with r17 and up of the Android SDK.Warning
Revisions 14 and 17 of the Android SDK introduced changes in the Ant build system. Neko has been updated to use the build system in r17. You will probably need to change your project if you have been using an older version of Neko/SDK. For more detailed information, check the Android Tools Project site for information about the breaking changes in r14 and r17.
- Android Platform SDK 7 (2.1/Eclair) or newer
In order to maintain backwards-compatibility, Neko does not support any APIs for newer versions of the platform.
Getting started with Neko
The following instructions should help you to add Clojure support to your project’s build and allow you to use the libraries within your application.
1. Install the Android SDK
2. Create an Android project
3. Get Neko
If you created a project using lein-droid then you already have neko dependency in your project. In other case put the following line in the list of your dependencies:
4. Write your first Android application in Clojure
The project created with lein-droid already contains a stub for an application with one activity and a few UI elements on it. You can change that file and then either recompile/redeploy the application or in application’s runtime from the REPL.
5. Build and run it
The build process is explained in detail in the lein-droid tutorial.
6. Make something wonderful
From this point on, it is up to you to create something wonderful.
Here are some more things you can do with Neko:
You can place a
clojure.properties file in the
build-support directory from
clojure.xml lives). This file will be sourced and used in any
project in which you have enabled Clojure build support.
To enable reflection warnings during compilation, simply set the
clojure.warn.reflection property to
true. This is something that might be
good to put in that
Mixed Java/Clojure projects
Neko will build all Java sources you have placed in
src/java before any
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