Programming Tutorials

  The upgrade to Flutter 3.27 has introduced a critical regression for applications relying on established deep linking plugins like   uni_links   or   firebase_dynamic_links . Developers are reporting immediate crashes on startup (specifically   IllegalStateException   on Android) or silent failures where valid deep links are ignored, defaulting the user to the initial route. This isn't a bug in your routing logic. It is a fundamental conflict between the Flutter Engine's new default behavior and the method hooking strategies employed by third-party plugins. Root Cause Analysis: The Race for the Intent To understand why your app crashes, you must look at the native lifecycle events. Historically, the Flutter Engine left deep link handling largely to the developer (or plugins). Plugins like  uni_links  operate by inspecting the  Intent  (Android) or  NSUserActivity  (iOS) during the  onCreate  or  application:con...

  The transition to Xcode 16 (and iOS 18 SDK) has introduced a stricter build environment that exposes long-standing fragility in the CocoaPods dependency graph used by Flutter. If you are encountering  "Include of non-modular header inside framework module" , errors related to  BoringSSL/gRPC , or  Sandboxing violation  errors during the build phase, you are dealing with a conflict between Clang's module system and legacy header import styles found in many Objective-C libraries (like Firebase). This post provides the root cause analysis and a persistent configuration fix to resolve these build failures. The Root Cause: LLVM Modules & Build Sandboxing 1. The Module Map Conflict Apple's Clang compiler uses  Modules  to replace the traditional  #include  /  #import  preprocessor mechanism. Modules provide better build performance and encapsulation by using "Module Maps" ( .modulemap ) to define explicitly which headers belong to a...