The project supported send and receive messages between Dapp and in-app webview “Only EIP-1193 standard supported”
- Communicate between dapp and your app.
- Dapp interact with blockchain.
import 'package:web3_provider/web3_provider.dart'; InAppWebViewGroupOptions options = InAppWebViewGroupOptions( crossPlatform: InAppWebViewOptions( useShouldOverrideUrlLoading: true, mediaPlaybackRequiresUserGesture: false, userAgent: "Mozilla/5.0 (Linux; Android 4.4.4; SAMSUNG-SM-N900A Build/tt) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/33.0.0.0 Mobile Safari/537.36", ), android: AndroidInAppWebViewOptions( useHybridComposition: true, domStorageEnabled: true, ), ios: IOSInAppWebViewOptions( allowsInlineMediaPlayback: true, ), ); /// By default config InAppWebViewEIP1193( chainId: 56, // Replace your chain id network you want connect rpcUrl: 'https://bsc-dataseed.binance.org/', // Replace your rpc url network you want connect walletAddress: walletAddress, signCallback: (rawData, eip1193, controller) { // Handler callback when dapp interact with blockchain switch (eip1193) { case EIP1193.requestAccounts: controller?.setAddress(walletAddress, id); print('requestAccounts'); break; case EIP1193.signTransaction: print('signTransaction'); break; case EIP1193.signMessage: print('signMessage'); break; case EIP1193.signPersonalMessage: print('signPersonalMessage'); break; case EIP1193.signTypedMessage: print('addEthereumChain'); break; case EIP1193.addEthereumChain: print('addEthereumChain'); break; }, initialUrlRequest: URLRequest( url: Uri.parse( 'https://position.exchange', // Replace your dapp domain ), ), initialOptions: options );If you want use your provider script you provide [customPathProvider] and [customWalletName]
signCallback: (rawData, eip1193, controller): callback was called when dapp when interact with blockchain.
rawData: data received.eip1193: type function support.- requestAccounts: Pass when web app connect wallet
- signTransaction: Pass when web app approve contract or send transaction
- signMessage: Pass when web app sign a message
- signPersonalMessage: Pass when web app sign a personal message
- signTypedMessage: Pass when web app sign a type message
- addEthereumChain: Pass when web app add a new chain
When you pass data from dapp to your app
const args = {/* Pass data you want */}; if (window.flutter_inappwebview.callHandler) { window.flutter_inappwebview.callHandler('functionName', args) .then(function(result) { /// Receive data from your app }); } And receive in your app
onWebViewCreated: (controller) { controller.addJavaScriptHandler( handlerName: 'functionName', callback: (args) { /// Receive data from dapp /// Send data to dapp; return /* anything */; }, ); },