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Macroid — a Scala GUI DSL for Android

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Macroid is a modular functional user interface creation language for Android, implemented with Scala macros.

Striving to be focused on one thing (GUI), Macroid promotes composability and high-level abstractions.

Prerequisites: Scala 2.10.x or 2.11.x, Android API 19+.

Latest version: 2.1.0

Snapshot version: 2.1.0-SNAPSHOT

License: MIT.

For more info head to!


libraryDependencies ++= Seq(
  aar("org.macroid" %% "macroid" % "2.1.0")

If you want to use the SNAPSHOT version you need to add the Sonatype SNAPSHOT repo

resolvers +=
  "Sonatype OSS Snapshots" at ""

libraryDependencies ++= Seq(
  aar("org.macroid" %% "macroid" % "2.1.0-SNAPSHOT")


All contributions are welcome (and encouraged)!

Commit messages

Macroid’s commit message structure is inspired by the Spray project. The message has the following format:

[=|+|!] [core|viewable|akka|docs|all]: <Actual message>.
  • = means there are no API changes
  • + means added functionality
  • ! means breaking changes (source or binary)


! core: Receive UI actions in mapUi & co (fix #48)

mapUi, flatMapUi, ... now operate on UI actions, rather than simple thunks.
For example, the new type signature for mapUi is (A ⇒ Ui[B]) ⇒ Future[B].

Following this convention greatly simplifies writing the changelogs.


Although this is not crucial, updating the docs under macroid-docs together with the code changes might save some time in the future, and thus is highly appreciated. It can be done in the same commit.

Commercial Support

47 Degrees offers commercial support for the Macroid library and associated technologies. To find out more, visit 47 Degrees' Open Source Support.