private void startAdvertising() { SystemUtils.toast(ServerActivity.this, "startAdvertising()"); if (!NetworkUtils.isConnectedToNetwork(this)) { SystemUtils.toast(ServerActivity.this, "!isConnectedToNetwork()"); // return; } // Identify that this device is the host mIsHost = true; // Advertising with an AppIdentifer lets other devices on the // network discover this application and prompt the user to // install the application. List<AppIdentifier> appIdentifierList = new ArrayList<>(); appIdentifierList.add(new AppIdentifier(getPackageName())); AppMetadata appMetadata = new AppMetadata(appIdentifierList); // The advertising timeout is set to run indefinitely // Positive values represent timeout in milliseconds long NO_TIMEOUT = 0L; String name = null; Nearby.Connections.startAdvertising(mGoogleApiClient, name, appMetadata, NO_TIMEOUT, this) .setResultCallback( new ResultCallback<Connections.StartAdvertisingResult>() { @Override public void onResult(Connections.StartAdvertisingResult result) { if (result.getStatus().isSuccess()) { SystemUtils.toast(ServerActivity.this, "Device is advertising"); } else { int statusCode = result.getStatus().getStatusCode(); SystemUtils.toast( ServerActivity.this, "Advertising failed - see statusCode for more details"); } } }); }