Introduction to Android App Development.

1. INTRODUCTION TO
ANDROID APP
DEVELOPMENT
Building Mobile Apps for the Android Ecosystem

2. WHAT IS ANDROID?
• Open-source operating system developed by Google
• Powers over 70% of smartphones globally
• Supports a variety of devices: phones, tablets, TVs,
wearables

3. LARGE GLOBAL USER BASE
OPEN ECOSYSTEM AND FLEXIBILITY
GOOGLE PLAY STORE = MASSIVE
DISTRIBUTION PLATFORM
SUPPORTS KOTLIN, JAVA, AND C++
WHY DEVELOP FOR ANDROID?

4. ANDROID ARCHITECTURE
• Linux Kernel
• Hardware Abstraction Layer (HAL)
• Android Runtime (ART)
• Libraries
• Application Framework
• Applications

5. DEVELOPMENT TOOLS
• Android Studio – Official IDE
• Emulator – Test devices virtually
• SDK Tools – APIs, build tools, platform tools
• Firebase – Backend services (Analytics, Auth, Database)

6. PROGRAMMING
LANGUAGES
• Kotlin – Official language
recommended by Google
• Java – Legacy support, still
widely used
• Others: C++ (via NDK), Dart
(for Flutter apps)

7. APP COMPONENTS
• Activities – UI screens
• Services – Background processes
• Broadcast Receivers – Respond to system-wide
events
• Content Providers – Data sharing between apps

8. BUILDING A SIMPLE APP
1. Create project in Android Studio
2. Design UI (XML or Jetpack Compose)
3. Write logic in Kotlin/Java
4. Run on emulator/device
5. Debug and optimize

9. PUBLISHING YOUR APP
Create a signed APK/AAB
Set up a Play Console account
Follow guidelines and policies
Publish to the Google Play Store

10. BEST PRACTICES
• Follow Material Design guidelines
• Optimize for performance and battery
• Handle permissions gracefully
• Test on different screen sizes and Android
versions

11. TRENDS IN ANDROID DEVELOPMENT
(2025)
• Jetpack Compose for UI
• Kotlin Multiplatform
• AI/ML integration
• Foldables and wearable device support

12. THANK
YOU!!
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