private void sortByName(List<File> list) {
        Collections.sort(list, (f1, f2) -> f1.getName().toLowerCase().compareTo(f2.getName().toLowerCase()));
    }
allows dialog title follows the current folder name

@param followDir dialog title will follow the changing of directory
@return this
android-file-chooser/src/main/java/com/obsez/android/lib/filechooser/ChooserDialog.java