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Transfers

This walkthrough covers how to sign transactions through UKey Wallet TRON Provider, broadcast transactions, and use TronWeb for contract interaction.

signature transaction​

The following example first constructs the transaction, then requests the UKey Wallet signature, and finally the application manually broadcasts:

// Build transaction
const tx = await tronWeb.transactionBuilder.sendTrx(
  "TR7x6W5v4U3t2S1r0Q9p8NmLyKjHgFeDcB",
  tronWeb.toSun(10),
  tronWeb.defaultAddress.base58,
);

// Sign through the provider
const signedTx = await provider.sign(tx);

console.log("Signed payload:", signedTx);

// Broadcast manually
const callResult = await tronWeb.trx.sendRawTransaction(signedTx);

Smart contract interaction​

const contract = await tronWeb.contract().at(contractAddress);

// call the read-only view function
const callResult = await contract.someViewFunction().call();

// 写操作需要签名确认
const tx = await contract.someWriteFunction(param1, param2).send({
  feeLimit: 100_000_000, // fee cap: 100 TRX
  callValue: 0,
});

Trigger smart contract​

const tx = await tronWeb.transactionBuilder.triggerSmartContract(
  contractAddress,
  "transfer(address,uint256)",
  { feeLimit: 100_000_000 },
  [
    { type: "address", value: recipientAddress },
    { type: "uint256", value: amount },
  ],
  tronWeb.defaultAddress.base58,
);

const signedTx = await provider.sign(tx.transaction);
const callResult = await tronWeb.trx.sendRawTransaction(signedTx);

Use SunWeb​

SunWeb can be used for DAppChain (side chain) related operations:

const sunWeb = window.sunWeb;

// Move from main chain to side chain
await sunWeb.depositTrx(amount, depositFee, feeLimit);

// Move from side chain to main chain
await sunWeb.withdrawTrx(amount, withdrawFee, feeLimit);