DetectedActivity.java

Awareness.SnapshotApi.getDetectedActivity(mGoogleApiClient)
                .setResultCallback(new ResultCallback<DetectedActivityResult>() {
                    @Override
                    public void onResult(@NonNull DetectedActivityResult detectedActivityResult) {
                        if (detectedActivityResult.getStatus().isSuccess()) {
                            ActivityRecognitionResult activityRecognitionResult =
                                    detectedActivityResult.getActivityRecognitionResult();
                                    // do stuff with ActivityRecognitionResult object!
                        }
                    }
                });