2. Android:
1. Android is an open-source operating
system primarily designed for mobile
devices.
2. Developed by the Open Handset Alliance,
led by Google.
3. It has become the dominant mobile
operating system globally.
3. Why to use Android:
1. Android's open-source nature allows developers to access and
modify the source code, offering unparalleled flexibility in
customization.
2. Android Studio, the official Integrated Development Environment
(IDE), provides a robust set of tools tailored for Android
development.
3. Android offers a rich set of APIs and frameworks, enabling
developers to implement complex functionalities with ease.
4. Java and Kotlin in Android Development
Java:
● Foundation: Traditional
language for Android
development.
● Versatility: Code
compatibility across various
devices.
● Robust Ecosystem: Extensive
libraries for scalable app
development.
● Object-Oriented: Aligns with
Android's component-based
architecture.
Kotlin:
● Modern Alternative:
Preferred for modern
Android development.
● Interoperability: Seamless
integration with existing
Java projects.
● Conciseness and Safety:
Reduced boilerplate code
for clarity.
● Coroutines: Simplifies
asynchronous programming
for responsiveness.
5. Setting Up Android Studio
Android Studio is the official IDE
for Android app development.
● Provides a comprehensive set of
tools for designing, testing, and
debugging.
7. Project Structure
● "app" Module: Main container for code and resources.
● "res" Directory: Holds assets like layouts, images, and
strings.
● "manifests" Directory: Contains the AndroidManifest.xml file
for configuration.
● "gradle" Files: Configuration for the build system.
● Organized structure facilitates efficient development and
collaboration.
8. Anatomy of an Android App
Components of an Android App:
● Activities: Represent the UI
and manage user
interactions.
● Services: Execute background
tasks independently.
● Broadcast Receivers: Respond
to system-wide broadcast
announcements.
● Content Providers: Manage
shared sets of app data.
AndroidManifest.xml:
● Contains essential
information about the app.
● Acts as a contract between
the app and the Android
system.
● Declares app components,
permissions, and
hardware/software
requirements.
9. key factors to consider in Android development
● Platform Diversity:
● Fragmentation:
● Development Tools:
● Programming Languages:
● User Interface (UI) Design:
● Back-End Integration:
● Security:
● Performance Optimization:
● Testing and Debugging:
● App Deployment:
● User Engagement:
● Updates and Maintenance
11. Android App Life Cycle:
Lifecycle: App creation,
visibility, interaction,
background processes,
termination. Tailored methods
manage each phase.
12. Material Design:
Developed by Google, Material Design is a design language that aims
to provide a consistent and visually appealing user experience
across platforms.
● Key Principles:
-Material is the Metaphor
-Bold, Graphic, Intentional
-Motion Provides Meaning
