Package jni 1.0.0 was recently published. It's a good opportunity to share some of my lessons from... Tagged with flutter, dart, jni, ffi.

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A practical guide covering lessons learned from using jnigen and swiftgen for Flutter native interop in 2026. Covers migration from jni 0.14/0.15 to 1.0.0 including API changes, the new Dart-script-based binding configuration, callback patterns using Kotlin interfaces and Swift @objc protocols, memory management, ffigen include filters, cross-platform Dart wrapper patterns, and a side-by-side Android vs iOS API comparison. Includes concrete code examples for generator scripts, casting, arrays, and lifecycle management.

jnigen and swiftgen in 2026 - some lessons learned