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Introduction

This guide will help you use the Phantom redirect-based connect feature on mobile. Instead of deeplinking into the Phantom in-app browser, your users can enjoy a redirect-based connection, where they are automatically redirected between the app and their wallet to faciliate the connect, sign and additional method calls.

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Tutorial

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mobileExperience prop

Make sure you set mobileExperience to redirect on your DynamicContextProvider:

<DynamicContextProvider
  settings={{
    mobileExperience: 'redirect'
    // ... other settings
  }}
>

With just this code, your users will connect with the redirect-based approach. If you want to learn how to make method calls (like signAndSendTransaction) and access the result, read on

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Signer methods

The redirect-based approach makes it a little trickier to access the result, and soon we will offer an easy-to-use hook to do so. For now, you will need this code in your app:

import { useState, useEffect } from 'react';

import {
  VersionedTransaction,
  Transaction,
} from '@solana/web3.js';

import { useDynamicContext } from '@dynamic-labs/sdk-react-core';
import { ISolana } from '@dynamic-labs/solana-core';
import {
  isPhantomRedirectConnector,
  SignAndSendTransactionListener,
} from '@dynamic-labs/wallet-connector-core';

const useSignAndSendTransaction = () => {
  const { primaryWallet } = useDynamicContext();

  const [signature, setSignature] = useState<string | undefined>(undefined);
  const [errorCode, setErrorCode] = useState<string | undefined>(undefined);
  const [errorMessage, setErrorMessage] = useState<string | undefined>(
    undefined,
  );

  useEffect(() => {
    if (!isPhantomRedirectConnector(primaryWallet?.connector)) return;
    const handler: SignAndSendTransactionListener = (response) => {
      if (response.signature) {
        setSignature(response.signature);
      } else {
        setErrorCode(response.errorCode);
        setErrorMessage(response.errorMessage);
      }
    };

    primaryWallet.connector.on('signAndSendTransaction', handler);
    return () => {
      if (!isPhantomRedirectConnector(primaryWallet?.connector)) return;
      primaryWallet.connector.off('signAndSendTransaction', handler);
    };
  }, [primaryWallet?.connector]);

  const execute = async (transaction: Transaction | VersionedTransaction) => {
    if (!primaryWallet) return;
    const signer = await primaryWallet.getSigner<ISolana>();
    await signer.signAndSendTransaction(transaction);
  };

  return { errorCode, errorMessage, execute, signature };
};

You can render this hook in your app, and call execute on a button you render. This will trigger a redirect to the user’s wallet for signing, and if they accept the transaction, they will be redirected back to your app. Upon your app re-loading, this hook should be rendered again, and it’s state values will be populated – in this case the signature will contain the signature of the transcation.