gistfile1.txt

// Not working... 
.getVolumesByLanguageCode(database, "ENG")
          .subscribeOn(Schedulers.io())
          .observeOn(AndroidSchedulers.mainThread())
          .flatMap(new Func1<List<Volume>, Observable<Volume>>() {
            @Override public Observable<Volume> call(List<Volume> volumes) {
              return Observable.from(volumes);
            }
          })
          .map(new Func1<Volume, String>() {
            @Override public String call(Volume volume) {
              return volume.name;
            }
          })
          .toList()
          .subscribe(new Observer<List<String>>() {
            @Override public void onCompleted() {
              Log.i("VolumesByLanguage", "onCompleted");
            }

            @Override public void onError(Throwable e) {
              UiUtils.toast("Error occurred no bibles found.", getActivity());
            }

            @Override public void onNext(List<String> volumes) {
              bibles = volumes;
              populateListView();
            }
          });
          
          
// Working....
FileUtils.getVolumesByLanguageCode(database, "ENG")
          .subscribeOn(Schedulers.io())
          .observeOn(AndroidSchedulers.mainThread())
          .subscribe(new Observer<List<Volume>>() {
            @Override public void onCompleted() {
              Log.i("VolumesByLanguage", "onCompleted");
            }

            @Override public void onError(Throwable e) {
              UiUtils.toast("Error occurred no bibles found.", getActivity());
            }

            @Override public void onNext(List<Volume> volumes) {
              rx.Observable.from(volumes)
                  .observeOn(AndroidSchedulers.mainThread())
                  .map(s -> s.name)
                  .toSortedList()
                  .subscribe(titles -> {
                    bibles = titles;
                    populateListView();
                  });
            }
          });