Bring Your Gno.land (d)Apps to React Native Effortlessly!

Overview

@gnolang/gnonative simplifies the process of access the Gno.land (d)apps to mobile by using gRPC to connect with core blockchain functions.

It helps bypass this complexity by using gRPC to make calls to the Gno core API and access the blockchain's realm functions on a remote Gno.land node.

API documentation

The RPC API documentation is available in the Buf registry:

• Documentation

Installation in Expo projects

Prerequisites

Please follow the general Build instructions in the main README and then:

make asdf.install_tools
npm config set @buf:registry  https://buf.build/gen/npm/v1/

Create new Expo app

npx create-expo-app my-app --template expo-template-blank-typescript
cd my-app

Add the package to your npm dependencies

npm install @gnolang/gnonative

Customize the app

We prepared for you an example Hello World code.

Open App.tsx and replace the content with this:

import { GnoNativeProvider, useGnoNativeContext } from '@gnolang/gnonative';
import React, { useEffect, useState } from 'react';
import { StyleSheet, Text, View } from 'react-native';

const config = {
  remote: 'https://gno.berty.io',
  chain_id: 'dev',
};

export default function App() {
  return (
    <GnoNativeProvider config={config}>
      <InnerApp />
    </GnoNativeProvider>
  );
}

const InnerApp = () => {
  const { gnonative } = useGnoNativeContext();
  const [greeting, setGreeting] = useState('');

  useEffect(() => {
    (async () => {
      try {
        const accounts = await gnonative.listKeyInfo();
        console.log(accounts);

        const remote = await gnonative.getRemote();
        const chainId = await gnonative.getChainID();
        console.log('Remote %s ChainId %s', remote, chainId);

        setGreeting(await gnonative.hello('Gno'));

        for await (const res of await gnonative.helloStream('Gno')) {
          console.log(res.greeting);
        }
      } catch (error) {
        console.log(error);
      }
    })();
  }, []);

  return (
    <View style={styles.container}>
      <Text>Gnonative App</Text>
      <Text>{greeting}</Text>
    </View>
  );
};

const styles = StyleSheet.create({
  container: {
    flex: 1,
    backgroundColor: '#fff',
    alignItems: 'center',
    justifyContent: 'center',
  },
});

Run the app

# Re-generate the native project directories from scratch
npx expo prebuild --clean
# Run the example app on Android
npx expo run:android
# Run the example app on iOS
npx expo run:ios

Installation in bare React Native projects

For bare React Native projects, you must ensure that you have installed and configured the expo package before continuing.

Generate new NPM package

You can run one of the following command:

make npm.pack

or

make npm.publish