useWalletUiSignAndSend

The useWalletUiSignAndSend hook provides a single function to take a set of instructions, sign them with a wallet, and send the transaction to the network.

It simplifies the transaction lifecycle by automatically fetching the latest blockhash and constructing the transaction object for you.

Note

This hook is designed to be used with the TransactionSendingSigner returned from the useWalletUiSigner hook.

Return Value

The hook returns a single asynchronous function.

signAndSend(ix, signer)

• ix: IInstruction | IInstruction[] - A single instruction or an array of instructions to include in the transaction. These instructions should be created using a library like @solana/kit.
• signer: TransactionSendingSigner - The signer object for the fee payer and signature.
• Returns: Promise<string> - A promise that resolves to the base58 transaction signature.

Example

This example demonstrates how to create a simple SOL transfer transaction and send it using the hook.

import { useWalletUiSigner, useWalletUiSignAndSend } from '@wallet-ui/react';
import { createTransferInstruction, getBase58Encoder } from '@solana/kit';
import { useState } from 'react';

const LAMPORTS_PER_SOL = 1_000_000_000;
// A random address to send 0.01 SOL to
const MOCK_RECIPIENT = '9m5kFDqgpf7Ckzbox91Vcmx5n2p4J242eT7tBCaG5y6d';

function SendTransactionButton() {
    const signer = useWalletUiSigner();
    const signAndSend = useWalletUiSignAndSend();
    const [signature, setSignature] = useState<string | null>(null);
    const [sending, setSending] = useState(false);

    const handleClick = async () => {
        if (!signer) return;
        setSending(true);
        try {
            const transferIx = createTransferInstruction({
                from: signer,
                to: getBase58Encoder().encode(MOCK_RECIPIENT),
                lamports: 0.01 * LAMPORTS_PER_SOL,
            });
            const sig = await signAndSend(transferIx, signer);
            setSignature(sig);
        } catch (e) {
            console.error(e);
            alert('Transaction failed. See console for details.');
        } finally {
            setSending(false);
        }
    };

    if (!signer) {
        return <p>Connect a wallet to send a transaction.</p>;
    }

    return (
        <div>
            <button onClick={handleClick} disabled={sending}>
                {sending ? 'Sending...' : 'Send 0.01 SOL'}
            </button>
            {signature && <p>Signature: {signature}</p>}
        </div>
    );
}