@Override
 public void onFinishEditDialog(String inputText) {
   PeopleDatabase db = new PeopleDatabase(getContext());
   db.open();
   db.addPersonToGroup(mGroup.getId(), inputText);
   mGroup.setPeople(db.getPeopleForGroup(mGroup.getId()));
   db.close();
   adapter.notifyDataSetChanged();
 }
 @Override
 public void onPayClicked(int position) {
   PeopleDatabase database = new PeopleDatabase(getContext());
   database.open();
   int id = (int) adapter.getItemId(position);
   database.makePersonPay(id, mGroup.getId());
   mGroup.setPeople(database.getPeopleForGroup(mGroup.getId()));
   database.close();
   adapter.notifyDataSetChanged();
 }
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    if (getArguments().containsKey(ARG_GROUP)) {
      // Load the dummy content specified by the fragment
      // arguments. In a real-world scenario, use a Loader
      // to load content from a content provider.
      mGroup = getArguments().getParcelable(ARG_GROUP);
      if (mGroup != null) {
        Log.d("GroupDetailFragment", "mGroup old size is " + mGroup.size());
        if (mGroup.size() == 0) {
          // double check to see if anyone is in the group
          PeopleDatabase db = new PeopleDatabase(getActivity());
          db.open();
          mGroup.addPeople(db.getPeopleForGroup(mGroup.getId()));
          db.close();
          Log.d("GroupDetailFragment", "mGroup new size is " + mGroup.size());
        }
        Activity activity = this.getActivity();

        final String picPath = mGroup.getPicture();
        Log.d("GroupDetailFragment", "picPath is " + picPath);

        if (picPath != null && !picPath.isEmpty()) {
          ImageView img = (ImageView) activity.findViewById(R.id.toolbar_image);
          try {
            Drawable pic = Drawable.createFromStream(activity.openFileInput(picPath), null);
            img.setImageDrawable(pic);
            Log.d("GroupDetailFragment", "set background");
          } catch (IOException e) {
            e.printStackTrace();
          }
        }

        CollapsingToolbarLayout appBarLayout =
            (CollapsingToolbarLayout) activity.findViewById(R.id.toolbar_layout);
        if (appBarLayout != null) {
          appBarLayout.setTitle(mGroup.getName());
          appBarLayout.setOnClickListener(
              new View.OnClickListener() {
                @Override
                public void onClick(View view) {}
              });
        }
      }
    }
  }