Establishing a connection

A connection to Coinbase Wallet can be initiated by calling the initiateHandshake function provided by the SDK. The function also takes in an optional initialActions parameter which apps can use to take certain actions along with the initial handshake request.

Kotlin

val requestAccount = Web3JsonRPC.RequestAccounts().action()
val handShakeActions = listOf(requestAccount)

client.initiateHandshake(
   initialActions = handShakeActions
) { result: Result<List<ActionResult>>, account: Account? ->
    result.onSuccess { actionResults: List<ActionResult> ->
        actionResults.handleSuccess("Handshake", handShakeActions, account)
    }
    result.onFailure { err ->
        err.handleError("HandShake")
    }
}

Java

// requestAccounts request
ArrayList<Action> actions = new ArrayList<>();
actions.add(
   new Web3JsonRPC.RequestAccounts().action(false)
);

// Initiate handshake
client.initiateHandshake(
   actions,
   (results, account) -> {
      for (ActionResult result : results) {
         if (result instanceof ActionResult.Result) {
            ((ActionResult.Result) result).getValue();
         }

         if (result instanceof ActionResult.Error) {
            ((ActionResult.Error) result).getCode();
            ((ActionResult.Error) result).getMessage();
         }
      }
   },
   error -> {
   }
);

An example handshake request is provided in the sample application.