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Getting Started

Connect the provider and use the TronWeb instance associated with that same wallet. Replace abbreviated addresses and contract methods with valid values. Check the selected network before preparing a transaction.

Learn how to detect, connect, and interact with TRON using OneKey’s provider.

OneKey exposes a TronLink-compatible provider and TronWeb integration. Feature availability depends on the wallet version and selected network.

Provider Detection


// OneKey injects both the provider and TronWeb instances
const provider = window.$onekey?.tron
 
// TronWeb is available globally after connection
let tronWeb = provider?.tronWeb
 
if (!provider) {
  throw new Error('OneKey TRON provider not detected')
}
 
// Check if it's TronLink compatible
console.log('isTronLink:', provider.isTronLink) // true

Request Accounts


// Request connection
const result = await provider.request({
  method: 'tron_requestAccounts'
})
 
if (result.code === 200) {
  tronWeb = provider.tronWeb
  if (!tronWeb) throw new Error('OneKey TronWeb is not ready')
  console.log('Connected!')
  const address = tronWeb.defaultAddress.base58
  console.log('Address:', address)
} else {
  console.log('Connection rejected:', result.message)
}

Check Connection Status


// Check if TronWeb is ready
if (provider.ready && tronWeb && tronWeb.defaultAddress.base58) {
  console.log('Connected:', tronWeb.defaultAddress.base58)
} else {
  console.log('Not connected')
}

Using TronWeb

After connection, use provider.tronWeb to keep requests associated with OneKey:

Get Balance


const balance = await tronWeb.trx.getBalance(tronWeb.defaultAddress.base58)
console.log('Balance:', tronWeb.fromSun(balance), 'TRX')

Send TRX


const tx = await tronWeb.trx.sendTransaction(
  'TRecipientAddress...',
  tronWeb.toSun(10) // 10 TRX
)
 
console.log('Transaction:', tx.txid)

Send TRC20 Token


const contractAddress = 'TTokenContractAddress...'
const contract = await tronWeb.contract().at(contractAddress)
 
// Get decimals
const decimals = await contract.decimals().call()
 
// Transfer tokens
const amount = (100n * 10n ** BigInt(decimals.toString())).toString() // 100 tokens, exact integer
const tx = await contract.transfer(
  'TRecipientAddress...',
  amount
).send()
 
console.log('Transaction:', tx)

Event Handling

Listen for Account Changes


provider.on('accountsChanged', (accounts) => {
  if (accounts[0]) {
    console.log('Account changed:', accounts[0])
  } else {
    console.log('Disconnected')
  }
})

Listen for Network Changes


provider.on('chainChanged', (chainId) => {
  console.log('Network changed:', chainId)
  // Recommend page reload for network changes
})

Window Events (TronLink Compatible)


// Listen for TronLink initialization
window.addEventListener('tronLink#initialized', () => {
  console.log('TronLink initialized')
})
 
// Listen for messages
window.addEventListener('message', (event) => {
  if (event.source === window && event.data?.isTronLink && event.data?.message) {
    const { action, data } = event.data.message
    console.log('TronLink event:', action, data)
  }
})

Migration from TronLink

OneKey is TronLink-compatible. Update your detection logic:


// Before (TronLink only)
const tronWeb = window.tronWeb
 
// After (OneKey with TronLink fallback)
const provider = window.$onekey?.tron || window.tronLink
const tronWeb = window.tronWeb // Compatibility global; verify which wallet owns it