React Native Quickstart

import {
  Connection,
  PublicKey,
  TransactionInstruction,
  VersionedTransaction,
  TransactionMessage,
  SystemProgram,
} from "@solana/web3.js";

// Create a list of Program instructions to execute.
const instructions = [
  SystemProgram.transfer({
    fromPubkey: fromPublicKey,
    toPubkey: toPublicKey,
    lamports: 1_000,
  }),
];

// Connect to an RPC endpoint and get the latest blockhash, to include in
// the transaction.
const connection = new Connection(clusterApiUrl("devnet"), "confirmed");
const latestBlockhash = await connection.getLatestBlockhash();

// Create the "message" of a transaction and compile to `V0Message` format.
const txMessage = new TransactionMessage({
  payerKey: fromPublicKey,
  recentBlockhash: latestBlockhash.blockhash,
  instructions,
}).compileToV0Message();

// Construct the Versioned Transaction passing in the message.
const versionedTransaction = new VersionedTransaction(txMessage);

import { transact } from "@solana-mobile/mobile-wallet-adapter-protocol-web3js";
import { toByteArray } from "react-native-quick-base64";

const connection = new Connection(clusterApiUrl("devnet"), "confirmed");
const signedTx = await transact(async (wallet) => {
  // Authorize the wallet session
  const authorizationResult = await wallet.authorize({
    cluster: "devnet",
    identity: APP_IDENTITY,
  });

  // Convert base64 address to web3.js PublicKey class
  const authorizedPubkey = new PublicKey(
    toByteArray(authorizationResult.accounts[0].address)
  );

  // Construct an instruction to transfer 1,000 lamports to a randomly generated account
  const randomKeypair = Keypair.generate();
  const instructions = [
    SystemProgram.transfer({
      fromPubkey: authorizedPubkey,
      toPubkey: randomKeypair.publicKey,
      lamports: 1_000,
    }),
  ];

  // Connect to an RPC endpoint and get the latest blockhash, to include in
  // the transaction.
  const latestBlockhash = await connection.getLatestBlockhash();

  // Construct the Versioned message and transaction.
  const txMessage = new TransactionMessage({
    payerKey: authorizedPubkey,
    recentBlockhash: latestBlockhash.blockhash,
    instructions,
  }).compileToV0Message();
  const versionedTransaction = new VersionedTransaction(txMessage);

  // Request to sign the transaction
  const signedTxs = await wallet.signTransactions({
    transactions: [versionedTransaction],
  });

  return signedTxs[0];
});