Simple and light library to do validate observable fields with MVVM for android
Rules are validated one by one (the order is important), the first invalid Rule will break the chain and set errorMessage. Rules are validated onPropertyChange. You can create your own rules using Rule interface. You can use single Rule or many by RuleCommand.
An Annotation based validation library for use with Android's DataBinding library in an MVVM architecture.
Crash fast library for Android.
Simple precondition library for crashing in case you find unexpected values. For example: After you login against a certain API, you have to get back your user. It's completely necessary to have a no null user, so you can