react-native-rust-module

Boilerplate to create react native modules relying on rust

Instructions

In the Example is a react native project that is configured to automatically consume a react-native-rust module that provides a helloWorld method which will call rust a rust library in both android and ios.

The rust library can be found in the rust/signer/src/lib.rs file

Requirements

Node - tested on 16 Android Toolchain (Android Studio) iOs Toolchain (xCode) Rust Toolchain - Cargo, rustup... (https://rustup.rs/ to get started)

Install Node Modules

1. yarn or npm i
2. cd example

iOs

To Perform changes and run those in ios follow these steps

1. yarn or npm i
2. cd /ios
3. pod install

Change Rust

1. modify lib.rs (if you add extra methods you also have to edit the signer.h file)
2. cd rust/signer and make ios - this will create a new file libsigner.a in the rust/signer directory
3. replace the old libsigner.a in ios/libs with the generated file
4. Run the app (in xcode or with npm run ios)

Android

To Perform changes and run those in ios follow these steps

Change Rust

1. modify lib.rs (if you add extra methods you also have to edit the signer.h file)
2. cd rust/signer and make android - this will create a new file libsigner.a in the rust/signer directory
3. make android will also have started the script copy_android which should have copied the rust compilation results into the java project.

(If the make android command throws an error that is complaining about missing -lgcc look at this issue ) 4. Run the app (in Android studio or with npm run android)

Kudos

Heavily inspired by

https://github.com/paritytech/parity-signer/tree/legacy-4.5.3 https://robertohuertas.com/2019/10/27/rust-for-android-ios-flutter/