flutter - 将 Metamask 与使用 Flutter 构建的原生移动应用程序连接

Question

我想将应用程序连接到 Metamsk 以获取用户帐户和用户签名以确认交易。但问题是，当我从应用程序进入 Metamsk 时，没有询问我任何确认连接的问题，Metamsk 内部也没有任何反应，就像只打开 Metamsk 应用程序，当我备份并返回应用程序时，返回空帐户。这是代码：

_walletConnect() async {
    final connector = WalletConnect(
      bridge: 'https://bridge.walletconnect.org',
      clientMeta: const PeerMeta(
        name: 'WalletConnect',
        description: 'WalletConnect Developer App',
        url: 'https://walletconnect.org',
        icons: [
          'https://gblobscdn.gitbook.com/spaces%2F-LJJeCjcLrr53DcT1Ml7%2Favatar.png?alt=media'
        ],
      ),
    );
    // Subscribe to events
    connector.on('connect', (session) => print(session));
    connector.on('session_update', (payload) => print(payload));
    connector.on('disconnect', (session) => print(session));

    // Create a new session
    if (!connector.connected) {
      session = await connector.createSession(
          chainId: 97,
          onDisplayUri: (uri) async => {print(uri), await launch(uri)});
    }

    setState(() {
      account = session.accounts[0];
      print(account);
    });

    if (account != null) {
      final client = Web3Client(rpc, Client());
      EthereumWalletConnectProvider provider =
          EthereumWalletConnectProvider(connector);
      credentials = WalletConnectEthereumCredentials(provider: provider);
      yourContract = ethUtils.getDeployedContract(myAddress, client);
    }