Programming Tutorials

  You have spent weeks perfecting your Tauri v2 application. The Rust backend is performant, the frontend is reactive, and   tauri android dev   runs flawlessly on your emulator. Then you run  tauri android build  to generate your signed APK or AAB for the Play Store. You install the release build, launch the app, and it crashes immediately. Logcat spits out a generic  InvokeRejected ,  ClassNotFoundException , or a  NullPointerException  originating from the JNI bridge. This is the "ProGuard Trap." If your app works in Debug but dies in Release, 99% of the time, the Android build system (Gradle + R8) has aggressively stripped out the Java/Kotlin code your Rust binary is trying to call. Here is why this happens and exactly how to fix it in Tauri v2. The Root Cause: JNI vs. R8 Optimization To understand the fix, you must understand the conflict between Rust and Android's build pipeline. 1. The Invisible Bridge (JNI) Tauri communicates between ...

  Migrating from Electron to Tauri is rarely a simple "copy-paste" operation. The most significant architectural friction isn't the UI (which stays largely the same); it is the Inter-Process Communication (IPC) layer. In Electron, your main process is Node.js. You likely rely on a mental model where the frontend and backend share the same language (JavaScript/TypeScript) and similar runtime behaviors. You might store state in global variables or simple classes in the main process, confident that the single-threaded event loop will save you from race conditions. In Tauri, your backend is Rust. It is compiled, multi-threaded, and strictly typed. When you attempt to port a Node.js controller that manages async tasks to a Rust  command , you immediately hit the wall of ownership, thread safety ( Send + Sync ), and serialization boundaries. This post dissects the root cause of this friction and provides a production-ready pattern for handling stateful, asynchronous jobs in Tau...