Category.java

public class Category implements ViewModel {

    @SerializedName("id")
    @Expose
    private String id;
    @SerializedName("name")
    @Expose
    private String name;
    @SerializedName("image")
    @Expose
    private String image;
    @SerializedName("image_url")
    @Expose
    private String imageUrl;

    private Boolean isChecked;
    
    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getImage() {
        return image;
    }

    public void setImage(String image) {
        this.image = image;
    }

    public String getImageUrl() {
        return imageUrl;
    }

    public void setImageUrl(String imageUrl) {
        this.imageUrl = imageUrl;
    }
    
     public Boolean getChecked() {
        return isChecked;
    }

    public void setChecked(Boolean checked) {
        isChecked = checked;
    }

}

CauseCategoryActivity.java

public class CauseCategoryActivity extends BaseActivity {

    RecyclerView mRecyclerView;
    RendererRecyclerViewAdapter mRecyclerViewAdapter;

    CauseCategoryViewModel mViewModel;
    CauseCategoryViewModel.CauseViewModelFactory mFactory;
    
    private ContentLoadingProgressBar progressBar;
    private ArrayList<Category> mSelectedUsers = new ArrayList<>();

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_cause);

        mFactory = InjectorUtils.provideCauseFactory(this.getApplicationContext());
        mViewModel = new ViewModelProvider(this, mFactory).get(CauseCategoryViewModel.class);

        mRecyclerView = findViewById(R.id.recyclerview);
        progressBar = findViewById(R.id.progress);

        mRecyclerViewAdapter = new RendererRecyclerViewAdapter();
        mRecyclerViewAdapter.registerRenderer(createStargazerRenderer(R.layout.item_user_full_width));
        mRecyclerView.setLayoutManager(new GridLayoutManager(this, 3));
        mRecyclerView.setAdapter(mRecyclerViewAdapter);

        mViewModel.getCauseDetails().observe(this, apiResponse -> {
            if (apiResponse != null) {
                for (int i = 0; i < apiResponse.size(); i++) {
                    Category mDetail = apiResponse.get(i);
                    Log.e("Cause ACTIVITY > ", mDetail.getName());
                }
                progressBar.hide();
                mRecyclerViewAdapter.setItems(apiResponse);
                mRecyclerViewAdapter.notifyDataSetChanged();
            }
        });

    }

    private ViewRenderer createStargazerRenderer(final int layout) {
        return new StargazerViewRenderer(layout, new Listener(), 1);
    }

    private class Listener implements StargazerViewRenderer.Listener {

        @Override
        public void onStargazerItemClicked(@NonNull final Category model, final boolean isChecked) {
            this.onStargazerClicked(model, isChecked);
            mRecyclerViewAdapter.notifyDataSetChanged();
        }

        public void onStargazerClicked(@NonNull final Category model, final boolean isChecked) {
            if (isChecked) {
                Log.e("onStargazerClicked: ", "ADD >" + model.getName());
                mSelectedUsers.add(model);
            } else {
                Log.e("onStargazerClicked: ", "REMOVE >" + model.getName());
                mSelectedUsers.remove(model);
            }
              mRecyclerViewAdapter.notifyDataSetChanged();
            if (mSelectedUsers.isEmpty()) {
                Log.e("SELECTION", "Please Select Anyone");
            } else {
                Log.e("SELECTION", "Thanks for selecting...");
            }
        }
    }

}

StargazerViewHolder.java

public class StargazerViewHolder extends ViewHolder {

	public final TextView name;
	public final ImageView avatar;
	public final View check;

	public StargazerViewHolder(final View itemView) {
		super(itemView);
		name = (TextView) itemView.findViewById(R.id.name);
		avatar = (ImageView) itemView.findViewById(R.id.avatar);
		check = itemView.findViewById(R.id.check);
	}
}

StargazerViewRenderer.java

public class StargazerViewRenderer extends ViewRenderer<Category, ViewFinder> {

	int MODE_SINGLE = 1;
	int MODE_MULTIPLE = 2;

    public StargazerViewRenderer(final int layoutID, @NonNull final Listener listener, int mode) {
        super(layoutID, Category.class, (model, finder, payloads) -> finder
                .setVisibility(R.id.check, model.getChecked() ? VISIBLE : GONE)
                .find(R.id.avatar, (ViewProvider<AvatarView>) urlImageView -> {
                    urlImageView.setUrl(model.getImageUrl());

                })
                .setText(R.id.title, model.getName())
                .setOnClickListener(() -> {
                    Log.e("VR > ", "SELECTED");
                    final boolean willChecked = finder.find(R.id.check).getVisibility() == GONE;
                    finder.find(R.id.check).setVisibility(willChecked ? VISIBLE : GONE);
                    listener.onStargazerItemClicked(model, willChecked);
                    model.setChecked(true);
                })
                .setOnClickListener(R.id.check, () -> {
                    Log.e("VR > ", "DE > SELECTED");
                    final boolean willChecked = finder.find(R.id.check).getVisibility() == GONE;
                    finder.find(R.id.check).setVisibility(willChecked ? VISIBLE : GONE);
                    listener.onStargazerItemClicked(model, willChecked);
                    model.setChecked(false);
                }));
    }

    @Nullable
    @Override
    public ViewState createViewState() {
        return new StargazerViewState();
    }

    @Override
    public int createViewStateID(@NonNull final Category model) {
        return Integer.parseInt(model.getID());
    }

    public interface Listener {
        void onStargazerItemClicked(@NonNull Category model, final boolean isChecked);
    }

StargazerViewState.java

public class StargazerViewState implements ViewState<ViewHolder>, Serializable {

	private int mVisibility;

	@Override
	public void clear(@NonNull final ViewHolder holder) {
		holder.getViewFinder().setVisible(R.id.check, false);
	}

	@Override
	public void save(@NonNull final ViewHolder holder) {
		holder.getViewFinder().find(R.id.check, view -> mVisibility = view.getVisibility());
	}

	@Override
	public void restore(@NonNull final ViewHolder holder) {
		holder.getViewFinder().setVisibility(R.id.check, mVisibility);
	}
}