| ActivityLifecycleCallback | Callback for monitoring activity lifecycle events. |
| ActivityLifecycleMonitor | Interface for tests to use when they need to query the activity lifecycle state. |
| ApplicationLifecycleCallback | Callback for monitoring application lifecycle events. |
| ApplicationLifecycleMonitor | Interface for tests to use when they need to be informed of the application lifecycle state. |
| ActivityLifecycleMonitorRegistry | An exposed registry instance to make it easy for callers to find the lifecycle monitor for their application. |
| ApplicationLifecycleMonitorRegistry | An exposed registry instance to make it easy for callers to find the application lifecycle monitor for their application. |
| ApplicationStage | An enumeration of the lifecycle stages an application undergoes that can be monitored. |
| Stage | An enumeration of the lifecycle stages an activity undergoes. |