Overview

This codelab guides you step-by-step in building a Flutter app that interacts with native Android and iOS APIs using Platform Channels. You’ll begin with a simple MethodChannel to request the device’s battery level from Dart, then implement the native method handlers in Kotlin and Swift. Next, you’ll reverse the flow by invoking a native action (toast/alert) from Flutter. Finally, you’ll set up an EventChannel to stream periodic updates from native code into Flutter, showing how to handle lifecycle events and memory cleanup. Along the way, you’ll learn how to namespace channels to avoid plugin conflicts, serialize data for safe transfer, and choose the right channel type for your needs. The result is a reusable pattern for integrating platform-specific features while keeping your Flutter UI logic clean and testable.