Mobile App Development (Android)

Description:
Learn to build interactive, data-driven mobile applications using Android Studio and Kotlin/Java, covering UI design, activity lifecycle, and accessing device resources.

Learning Objectives:

  • Set up Android development environment

  • Create layouts and user interfaces

  • Handle user interaction and lifecycle

  • Use SQLite and SharedPreferences for data storage

  • Access APIs and device features

Detailed Content:

12.1 Getting Started

  • Install Android Studio and configure AVD (Android Virtual Device).

  • Structure of an Android project: Manifest, Java/Kotlin, res, Gradle.

12.2 Activities and Intents

  • Activities are entry points for user interaction.

  • Lifecycle methods: onCreate(), onStart(), onPause(), onDestroy().

  • Intents navigate between screens.

12.3 UI Components and Layouts

  • XML layouts define UI.

  • Widgets: TextView, EditText, Button, RecyclerView.

  • Use ConstraintLayout, LinearLayout, RelativeLayout.

12.4 User Input and Event Handling

  • Capture clicks, inputs, and gestures using listeners.

button.setOnClickListener {
Toast.makeText(this, "Button clicked", Toast.LENGTH_SHORT).show()
}

12.5 Data Storage

  • SharedPreferences: Simple key-value storage.

  • SQLite: Embedded relational database.

  • Use Room for easier database access.

12.6 Working with APIs

  • Use Retrofit/Volley to make HTTP calls.

  • Parse JSON responses to display dynamic content.

12.7 Device Features

  • Access GPS, camera, accelerometer, and contacts.

  • Handle runtime permissions (Android 6+).