initWeb3

private void initWeb3j() {
     final String url = rinkebyUrl;
     Thread t = new Thread(new Runnable() {
        @Override
        public void run() {
            HttpService infuraHttpService;
            String result = "Success initializing web3j/infura";
            try {
                infuraHttpService = new HttpService(url);
                web3j = Web3j.build(new HttpService(url));
            } catch (Exception wtf) {
                String exception = wtf.toString();
                Log.d("wat", "Error initializing web3j/infura. Error: " + exception);
            }
            // Use callback function e.g. publishResult(result)
            //return result;
         }
     });
     t.start();
}