Add custom notification sounds to Flutter apps on Android and iOS with channels, file placement, FCM payloads, and testing tips.
Step-by-step Flutter Sign in with Apple: iOS/macOS setup, Android web flow, secure nonce, Firebase integration, testing, and troubleshooting.
Build a Flutter app that reads and writes fitness data via Apple HealthKit and Android Health Connect—permissions, code samples, sync, and best practices.
Implement reliable periodic background sync in Flutter using workmanager: setup, code samples, iOS/Android nuances, constraints, retries, and best practices.
Build a robust, web-safe Flutter device info layer using device_info_plus, platform checks, screen metrics, caching, and privacy best practices.
Build custom Google Maps markers in Flutter—assets, SVG, widget-to-bitmap, clustering, animations, and custom info windows—with performance tips.
