Theo is a Gradle plugin that provides annotations for each "dangerous android permission".

Customized toggle button.

Cicerone is a lightweight library that makes the navigation in an Android app easy.

Custom view to pick up a value from a given range using click button or swiping.

ImageMap is a small android library for displaying multiple image on a view using an adapter, you can then retrieve tap event on defined image.

SpannableBar is a Grid-style spannable bar, that is useful when you need a way to span a bar over columns. The view allows you to set the starting column, the span, the number of columns, and more.