walletAddChain method

Future<void> walletAddChain({
  1. required int chainId,
  2. required String chainName,
  3. required CurrencyParams nativeCurrency,
  4. required List<String> rpcUrls,
  5. List<String>? blockExplorerUrls,
})

Creates a confirmation asking the user to add the specified chain with chainId, chainName, nativeCurrency, and rpcUrls to MetaMask.

The user may choose to switch to the chain once it has been added.

As with any method that causes a confirmation to appear, wallet_addEthereumChain should only be called as a result of direct user action, such as the click of a button.

// Add chain 97
await ethereum!.walletAddChain(
  chainId: 97,
  chainName: 'Binance Testnet',
  nativeCurrency: CurrencyParams(name: 'BNB', symbol: 'BNB', decimals: 18),
  rpcUrls: ['https://data-seed-prebsc-1-s1.binance.org:8545/'],
);

Implementation

Future<void> walletAddChain({
  required int chainId,
  required String chainName,
  required CurrencyParams nativeCurrency,
  required List<String> rpcUrls,
  List<String>? blockExplorerUrls,
}) =>
    request('wallet_addEthereumChain', [
      _ChainParamsImpl(
        chainId: '0x' + chainId.toRadixString(16),
        chainName: chainName,
        nativeCurrency: nativeCurrency.impl,
        rpcUrls: rpcUrls,
        blockExplorerUrls: blockExplorerUrls,
      )
    ]);