Dapp内置浏览器实现简易Demo

先占位，后续有机会在补充细节，react-native实现的Android钱包客户端：

Demo代码（仅登录）

import {WebView} from 'react-native-webview';
import {ethers} from 'ethers';
const nodeProvider = ''; // 改成可用的
const address = ''; // 改成自己的
const privateKey = ''; // 改成自己的
const providerMainnet = new ethers.providers.JsonRpcProvider(nodeProvider);
let walletProviderMainnet = new ethers.Wallet(privateKey, providerMainnet);
const injectedJavaScript = `
    window.ethereum = {};
    window.ethereum.isMetaMask = true;
    window.ethereum.isConnected = function() { return true };
    window.ethereum.provider = ${JSON.stringify(providerMainnet)};
    window.ethereum.wallet = {};
    window.ethereum.wallet.provider = ${JSON.stringify(
      walletProviderMainnet.provider,
    )};
    window.ethereum.wallet.address = '${address}';
    window.ethereum.selectedAddress = '${address}';
    window.ethereum.eth_requestAccounts = async function(tx) {
      console.log('---------eth_requestAccounts-----------', tx)
      return '${address}';
    };
    window.ethereum.wallet.signTransaction = async function(tx) {
      console.log('---------signTransaction-----------', tx)
      const signedTx = await walletProviderMainnet.signTransaction(tx);
      return signedTx;
    };
    window.ethereum.request = function(args = {}) {
      console.log('---------request-----------', args)
      const { method, params } = args
      return window.ethereum.send(method, params)
    };
    window.ethereum.send = function(method, params) {
      console.log('---------send-----------', method, params)
      return new Promise(function(resolve, reject) {
        window.ReactNativeWebView.postMessage(JSON.stringify({
            type: 'bsc',
            payload: {
                method: method,
                params: params,
            }
        }));
        document.addEventListener("message", function(event) {
          console.log('---------message-----------', event)
          const data = JSON.parse(event.data) || {}
          if (data.type === 'ethereum' && data.payload.id === method) {
              if (data.payload.error) {
                  reject(data.payload.error);
              } else {
                  resolve(data.payload.result);
              }
          }
        }, { once: true });
      });
    };
    window.ethereum.enable = async function() {
      console.log('---------enable-----------')
      let accounts = await window.ethereum.wallet.provider.listAccounts();
      accounts = window.ethereum.wallet.address
      return accounts;
    };
    window.ethereum.send('eth_accounts').then(accounts => {
      console.log('---------eth_accounts-----------', accounts)
        window.ReactNativeWebView.postMessage(JSON.stringify({
            type: 'accounts',
            data : accounts
        }));
    }).catch(error => {
        console.log('Error:', error);
    });
`;

const BrowserTab = function () {
  const webviewRef = useRef(null);
  const handleWebViewMessage = async function (event: any) {
    console.log('-------onMessage-----------', event);
    const {data} = event.nativeEvent;
    const {type, payload = {}} = JSON.parse(data) || {};
    const {method} = payload;
    console.log(webviewRef.current);
    if (webviewRef.current) {
      method === 'eth_requestAccounts' &&
        webviewRef.current.postMessage(
          JSON.stringify({
            type: 'ethereum',
            payload: {
              id: 'eth_requestAccounts',
              result: [address],
            },
          }),
          '*',
        );
      method === 'eth_chainId' &&
        webviewRef.current.postMessage(
          JSON.stringify({
            type: 'ethereum',
            payload: {
              id: 'eth_chainId',
              result: 5,
            },
          }),
          '*',
        );
    }
  };
  return (
    
  );
};

export default BrowserTab;

参考文章

https://stackoverflow.com/questions/75633905/how-to-inject-a-wallet-into-the-browser-from-mobile-react-native

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