Android Architecture Model, Android Studio, Android SDK, AVM, Android Emulator etc.

Activities and User Interface -

Activities, Fragments and their Lifecycle, XML, Layouts with Constraint Layout, Lists, Images, Recycler Views, Phone and Tablet Modes etc.

Network -

Network API Requests, JSON, Async Tasks, Libraries like Volley and Retrofit , Sync Adapters etc.

Social Login -

Login through Google, Facebook , Truecaller etc.

Persistent Storage -

Shared Preferences, Sqlite, Content Providers, Loaders, Room, Files etc.

Firebase and Google Play Services -

Firebase Overview, Firebase Realtime Database and Cloud FireStore, Google Play Services Location, Places, AdMob etc.

Receivers, Services and Notifications -

Broadcast Receivers, Services, Permissions, Alarm Manager , Notification channels etc.

Sensors and Animations

Android Sensors, Transitions , Media Players etc

Gradle -

Gradle Overview, Gradle Scripts, Tasks, App Flavours, Android Libraries etc.

Advanced Topics -

Espresso and JUnit Testing Library, Kotlin , Widgets, Play Store Launch etc.

Special Classes -

Github Overview, Machine Learning Foundation, Interview Preparation, Resume Building.