This library allows the usage of RxJava with the new Android M permission model. If you need to trigger the permission request from a specific event, you need to setup your event as an observable inside an initialization phase. You can use JakeWharton/RxBinding to turn your view to an observable (not included in the library). Because your app may be restarted during the permission request, the request must be done during an initialization phase. This may be Activity.onCreate, or...