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Description:

walletconnect dart

WalletConnect is an open source protocol for connecting decentralised applications to mobile wallets
with QR code scanning or deep linking. A user can interact securely with any Dapp from their mobile
phone, making WalletConnect wallets a safer choice compared to desktop or browser extension wallets.
Introduction #
WalletConnect connects mobile & web applications to supported mobile wallets. The WalletConnect session is started by scanning a QR code (desktop) or by clicking an application deep link (mobile).
WalletConnect-Dart-SDK is a community SDK and port of the official WalletConnect-monorepo.
WalletConnect-Dart currently supports:

Algorand
Ethereum

You can easily add your own network by extending from WalletConnectProvider and implementing the required methods using sendCustomRequest.
An example from Binance Smart Chain can be found here.
For more information regarding the implementation, check out EthereumWalletConnectProvider and AlgorandWalletConnectProvider.
WalletConnect lets you build:

Decentralized web applications and display QR codes with qr_flutter
Mobile dApps with deep linking using url_launcher
Cross-platform wallets

Once installed, you can simply connect your application to a wallet.
// Create a connector
final connector = WalletConnect(
bridge: 'https://bridge.walletconnect.org',
clientMeta: PeerMeta(
name: 'WalletConnect',
description: 'WalletConnect Developer App',
url: 'https://walletconnect.org',
icons: [
'https://gblobscdn.gitbook.com/spaces%2F-LJJeCjcLrr53DcT1Ml7%2Favatar.png?alt=media'
],
),
);
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Usage #
Dapps #
Initiate connection
// Create a connector
final connector = WalletConnect(
bridge: 'https://bridge.walletconnect.org',
clientMeta: PeerMeta(
name: 'WalletConnect',
description: 'WalletConnect Developer App',
url: 'https://walletconnect.org',
icons: [
'https://gblobscdn.gitbook.com/spaces%2F-LJJeCjcLrr53DcT1Ml7%2Favatar.png?alt=media'
],
),
);

// Subscribe to events
connector.on('connect', (session) => print(session));
connector.on('session_update', (payload) => print(payload));
connector.on('disconnect', (session) => print(session));

// Create a new session
if (!connector.connected) {
final session = await connector.createSession(
chainId: 4160,
onDisplayUri: (uri) => print(uri),
);
}
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Sign transaction
final sender = Address.fromAlgorandAddress(address: session.accounts[0]);

// Fetch the suggested transaction params
final params = await algorand.getSuggestedTransactionParams();

// Build the transaction
final tx = await (PaymentTransactionBuilder()
..sender = sender
..noteText = 'Signed with WalletConnect'
..amount = Algo.toMicroAlgos(0.0001)
..receiver = sender
..suggestedParams = params)
.build();

// Sign the transaction
final signedBytes = await provider.signTransaction(
tx.toBytes(),
params: {
'message': 'Optional description message',
},
);

// Broadcast the transaction
final txId = await algorand.sendRawTransactions(
signedBytes,
waitForConfirmation: true,
);

// Kill the session
connector.killSession();
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Wallets #
Initiate connection
// Create a connector
final connector = WalletConnect(
uri: 'wc:8a5e5bdc-a0e4-47...TJRNmhWJmoxdFo6UDk2WlhaOyQ5N0U=',
clientMeta: PeerMeta(
name: 'WalletConnect',
description: 'WalletConnect Developer App',
url: 'https://walletconnect.org',
icons: [
'https://gblobscdn.gitbook.com/spaces%2F-LJJeCjcLrr53DcT1Ml7%2Favatar.png?alt=media'
],
),
);

// Subscribe to events
connector.on('connect', (session) => print(session));
connector.on('session_request', (payload) => print(payload));
connector.on('disconnect', (session) => print(session));
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Manage connection
// Approve session
await connector.approveSession(chainId: 4160, accounts: ['0x4292...931B3']);

// Reject session
await connector.rejectSession(message: 'Optional error message');

// Update session
await connector.updateSession(SessionStatus(chainId: 4000, accounts: ['0x4292...931B3']));
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Kill session
await connector.killSession();
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Changelog #
Please see CHANGELOG for more information on what has changed recently.
Contributing & Pull Requests #
Feel free to send pull requests.
Please see CONTRIBUTING for details.
Credits #

Tomas Verhelst
Tom Friml
juampiq6
All Contributors

License #
The MIT License (MIT). Please see License File for more information.