Ricardo Costeira questions

Ricardo Costeira answers

• <android.arch.lifecycle.ViewModel>> cannot be provided without an @Provides-annotated method
• Injecting dependencies into background service in Dagger2
• DisposableObserver vs. (Regular) Observer
• invalidateOptionsMenu() deprecated
• Is onActivityCreated() called after onViewCreated() in a Fragment?
• Show confirmation on back/up in Fragment with Navigation Architecture Component
• how to instantiate ViewModel In AndroidX?
• Is observeOn requried for livedata postvalue?
• Navigation Components - onSupportNavigateUp()