Mortar provides a simplified, composable overlay for the Android lifecycle, to aid in the use of Views as the modular unit of Android applications. It leverages Context#getSystemService to act as an a la carte supplier of services like dependency injection, bundle persistence, and whatever else your app needs to provide itself.One of the most useful services Mortar can provide is its BundleService, which gives any View (or any object with access to the Activity context) safe access to the Activity lifecycle's persistence bundle. For fans of the Model View Presenter pattern, we provide a persisted Presenter class that builds on BundleService. Presenters are completely isolated from View concerns. They're particularly good at surviving configuration changes, weathering the storm as Android destroys your portrait Activity and Views and replaces them with landscape doppelgangers.