Install Swift SDK for Android toolchain, configure Android NDK, and create your first Swift package that will integrate with Android…

Your Swift code generates Java bindings, but Android doesn’t know about them yet. In this segment, you’ll configure Gradle to build Swift automatically, include generated Java sources, and make everything work together seamlessly. Understanding the Build Pipeline Here’s the complete build flow you’re about to configure…

…that data survives app restarts. You’ll learn: How Swift’s Codable protocol enables automatic JSON serialization File I/O with FileManager across iOS and Android platforms The Result type pattern for explicit, type-safe error handling StateFlow synchronization between Swift and Kotlin You’ll get started by understanding how JSON…

…learn how to request runtime permissions, integrate CameraX for photo capture, and create a camera preview UI with Jetpack Compose. Camera access requires handling Android platform APIs and runtime permissions, which you’ll implement in the Kotlin layer. The captured photos will later be processed in Swift, demonstrating how platform…

Build and test your hybrid Android app. Verify that Swift validation works correctly and understand the cross-language data flow…

…modify. You can replace TaskStorage with a database without changing TaskManager or Repository. 2. Platform independence Swift code works on both iOS and Android. Platform differences (file paths, memory management) are abstracted away by swift-java and conditional compilation. Your business logic stays clean. 3. Single source of truth TaskRepository…

Java code generation flow You write normal Swift code, and the plugin handles all the JNI complexity! Note: This approach is what production Swift-Android apps use. It eliminates the need to write and maintain manual JNI code, which is error-prone and time-consuming. Installing Java Development Kits swift…

Summarizes the Swift SDK for Android workflow and provides key takeaways from building the hybrid Task Manager…

Introduces Swift SDK for Android and the concept of hybrid Android apps where Swift handles business logic while Kotlin manages the native…

…capturing photos and applying filters, then test the complete flow from camera capture to filtered display. The UI layer orchestrates the entire process, calling Android camera APIs and Swift image processing functions through the repositories you created. Updating the Task Model for Photo Storage Before adding photo capture…

…this segment, you’ll learn how to convert Android Bitmap images to a format that Swift can process. You’ll create a custom file format for passing image data across the JNI boundary and implement the conversion logic in both directions. Understanding image data representation is crucial for cross-language…

…overload accepts: data: Raw image data (Data type) filename: What to name the file (e.g., “123.jpg”) documentsPath: Absolute path to documents directory (provided by Android) Note: Why the documentsPath parameter? On iOS, FileManager.default.urls(for: .documentDirectory) works reliably. On Android via Swift SDK, you must pass the path from Kotlin (context.filesDir.absolutePath…

…types for explicit, type-safe error handling in Swift. Implemented atomic file writes to prevent data corruption. Handled cross-platform file paths (iOS vs Android differences). Created JNI exports to bridge Swift methods to Kotlin. Synchronized UI with StateFlow for reactive updates. Implemented two-layer validation (Kotlin for UX, Swift…

Congratulations! You’ve successfully integrated Android camera functionality with Swift image processing in your Task Manager app. What You’ve Learned In this lesson, you’ve accomplished: Integrated CameraX for photo capture in the Android layer. Handled runtime permissions with Compose utilities. Designed a custom file format for binary data…

Learn about data persistence in Swift SDK for Android. Understand why persistence matters and what you’ll build in this lesson…

…demonstrating basic data flow between languages. In this lesson, you’ll add photo capture and image processing to the Task Manager. You’ll integrate Android’s CameraX with Swift image filters, demonstrating bidirectional data flow where data travels from Kotlin to Swift and back. You’ll work with binary data…