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FFI, Pigeon, or MethodChannel: A Flutter Native Interop Decision Guide

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Flutter offers three ways to communicate with native code — dart:ffi, Pigeon, and raw MethodChannel — but choosing the wrong one can be costly. A developer at Shpper recounts how a renamed Kotlin method, never updated on the Dart side, caused a MissingPluginException that went undetected until two days after release, taking three days to resolve. Raw MethodChannels rely on stringly-typed message passing with no compile-time checks, making silent failures easy to introduce and hard to catch. Pigeon addresses this by generating type-safe channel code from a Dart schema, while dart:ffi enables direct, synchronous calls to C-compatible libraries without serialization overhead. The recommended approach treats raw channels as a last resort, using FFI for native functions with a C ABI and Pigeon for typed contracts with Android or iOS platform SDKs.

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FFI, Pigeon, or MethodChannel: A Flutter Native Interop Decision Guide · ShortSingh