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When calling the executeTransactionAsync method, part of web3.abi.datatypes.Function, I get an error saying the method can not be found.

If I remove the Async so the method is executeTransaction, I get an error that the Transaction needs to be sent through Async.

I am using Android Studio, Java, and the Web3j library.

Is there a way I could send this transaction with Realm or something else? Or maybe I am using Web3j wrong and I need to use it another way?


My code sending the transaction:

public TransactionReceipt approve() throws IOException, TransactionException {
    Function function = new Function("approve", Arrays.<Type>asList(), Collections.<TypeReference<?>>emptyList());
    return executeTransactionAsync (function);
}

Web3j API

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