hello i use the env is android go ethereum light client not web3j not web3j i init geth code

        FilterQuery selfFQ = Geth.newFilterQuery();
        Topics tps = selfFQ.getTopics();
        String strFunction = "ReturnValue(address,int256)";
        String HashStr = Sha3.hash(strFunction);
        List<String> topics = new ArrayList<>();
        topics.add("0x" + HashStr);
        node.getEthereumClient().subscribeFilterLogs(Geth.newContext(),selfFQ,new MyFilterLogsHandler(),16L);

then i receiver the log in bellow

    public void  onFilterLogs(org.ethereum.geth.Log var1){
        byte[] topics = var1.getTopics().get(0).getBytes();
        byte[] args = var1.getTopics().get(1).getBytes();
    }catch (Exception e){
        Log.d("111","onFilterLogs getTopics " + var1.toString());

then i don't know how to parse the event and param ...... anybody can told me thanks


1 Answer 1


you will need abi to parse the event and inputs. I did the parsing in golang like this, abiParsed, err = abi.JSON(strings.NewReader(YourContract_ABI)) abiParsed.Events[eventName].Inputs.Unpack(v, rawLog.Data)

  • i cannot find the any detail about abi in geth.aar ..... maybe it's not been export in geth.aar
    – rexzhao
    May 25, 2018 at 7:24
  • sorry, i dont fimilliar with mobile client. If abi not exposed, you may post a request to the eth team on github. And, you could try BoundContract and see if it gives your any API to unpack logs.
    – Rader
    May 25, 2018 at 8:34
  • ok i'll try it ths a lot !
    – rexzhao
    May 25, 2018 at 8:52

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