solana_web3

Description:

solana web3

Dart implementation of Solana's JSON RPC API. #
Android and iOS support.



Screenshot of solana_wallet_provider

Implements the following programs: #

System Program
Token Program
Associated Token Program
Stake Program
Stake Pool Program
Metaplex Token Metadata
Memo Program
Compute Budget Program
ED25519 Program
Address Lookup Table


Features include: #

Signing Transactions.
Sending Transactions.
Signing Messages.
Websocket Notification Subscriptions (e.g. Account changes).
Keypair Generation.
Borsh Serialization.


Example: Transfer SOL #
/// Imports
import 'package:solana_web3/solana_web3.dart' as web3;
import 'package:solana_web3/programs/system.dart';

/// Transfer tokens from one wallet to another.
void main(final List<String> _arguments) async {

// Create a connection to the devnet cluster.
final cluster = web3.Cluster.devnet;
final connection = web3.Connection(cluster);

print('Creating accounts...\n');

// Create a new wallet to transfer tokens from.
final wallet1 = web3.Keypair.generateSync();
final address1 = wallet1.pubkey;

// Create a new wallet to transfer tokens to.
final wallet2 = web3.Keypair.generateSync();
final address2 = wallet2.pubkey;

// Fund the sending wallet.
await connection.requestAndConfirmAirdrop(
wallet1.pubkey,
solToLamports(2).toInt(),
);

// Check the account balances before making the transfer.
final balance = await connection.getBalance(wallet1.pubkey);
print('Account $address1 has an initial balance of $balance lamports.');
print('Account $address2 has an initial balance of 0 lamports.\n');

// Fetch the latest blockhash.
final BlockhashWithExpiryBlockHeight blockhash = await connection.getLatestBlockhash();

// Create a System Program instruction to transfer 0.5 SOL from [address1] to [address2].
final transaction = web3.Transaction.v0(
payer: wallet1.pubkey,
recentBlockhash: blockhash.blockhash,
instructions: [
SystemProgram.transfer(
fromPubkey: address1,
toPubkey: address2,
lamports: web3.solToLamports(0.5),
),
]
);

// Sign the transaction.
transaction.sign([wallet1]);

// Send the transaction to the cluster and wait for it to be confirmed.
print('Send and confirm transaction...\n');
await connection.sendAndConfirmTransaction(
transaction,
);

// Check the updated account balances.
final wallet1balance = await connection.getBalance(wallet1.pubkey);
final wallet2balance = await connection.getBalance(wallet2.pubkey);
print('Account $address1 has an updated balance of $wallet1balance lamports.');
print('Account $address2 has an updated balance of $wallet2balance lamports.');
}
copied to clipboard

Bugs #
Report a bug by opening an issue.
Feature Requests #
Request a feature by raising a ticket.