1. Java Syntax and OOP Basics – Creating classes and objects, demonstrating OOP concepts using ArrayList and HashMap
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2. Installing Android Studio and Hello World App – Install Android Studio, create and run your first app
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3. Simple Login Form – Create a login UI with EditText, Button, and greeting via Toast
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4. Navigation with Intents – Passing and receiving data between screens (name, email)
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5. Calculation Apps – Calculator, Currency Converter, Temperature Converter
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6. UI with ConstraintLayout and RelativeLayout – Flexible layouts with images, text, and buttons
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7. App with RadioButton and CheckBox – Forms using RadioGroup and CheckBox
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8. Creating UI with Fragments – Tabbed navigation using fragments
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9. Contacts List with RecyclerView – Adapter, ViewHolder, LayoutManager
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10. Using Custom and Alert Dialogs – Show and collect data via dialogs
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11. Remembering Login State with SharedPreferences – Enable auto-login
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12. Read/Write to Internal Storage – Save and read user input
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13. Contacts Database with Room – Entities, DAO, Database
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14. CRUD with Room, ViewModel, and LiveData – MVVM architecture
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15. Get Data from REST API using Retrofit – Fetch JSON and display in RecyclerView
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