AStickyHeader图书馆指南

Question

我要求你的帮助。如果有人已经使用此库并可以显示如何使用它。我花了2天时间尝试添加到我的项目中，但每次都有一个空视图，没有任何图像。 请帮我调查出错的地方。

非常感谢，任何帮助将不胜感激。

我的片段如下所示：

import android.app.Fragment;
import android.content.Context;
import android.database.Cursor;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.util.Log;
import android.util.SparseArray;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageButton;
import android.widget.ImageView;
import dev.dworks.libs.astickyheader.SimpleSectionedGridAdapter;
import dev.dworks.libs.astickyheader.SimpleSectionedGridAdapter.Section;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.TreeMap;

public class ItemFragment extends Fragment {
    private static final String ADD_LOOKUP_FRAGMENT = "add_lookup_fragment";
    public static ItemGridViewAdapter itemGridViewAdapter;
    private ImageButton imageButtonAddLookup;
    private GridView gridView;
    private ImageAdapter imageAdapter;
    private ArrayList<Section> sections = new ArrayList<Section>();
    private Integer[] mImageIds = {
            R.drawable.cat1, R.drawable.cat2, R.drawable.cat3, R.drawable.cat4, R.drawable.cat5, R.drawable.cat6, R.drawable.cat7, R.drawable.cat8, R.drawable.cat9, R.drawable.cat10,
            R.drawable.cat11, R.drawable.cat12, R.drawable.cat13, R.drawable.cat14, R.drawable.cat15, R.drawable.cat16, R.drawable.cat17, R.drawable.cat18, R.drawable.cat19, R.drawable.cat20,
            R.drawable.cat21, R.drawable.cat22, R.drawable.cat23, R.drawable.cat24, R.drawable.cat25, R.drawable.cat26, R.drawable.cat27, R.drawable.cat28, R.drawable.cat29, R.drawable.cat30,
            R.drawable.cat31, R.drawable.cat32, R.drawable.cat33, R.drawable.cat34, R.drawable.cat35, R.drawable.cat36, R.drawable.cat37, R.drawable.cat38, R.drawable.cat39, R.drawable.cat40,
            R.drawable.cat41, R.drawable.cat42, R.drawable.cat43, R.drawable.cat44, R.drawable.cat45, R.drawable.cat46, R.drawable.cat47, R.drawable.cat48, R.drawable.cat49, R.drawable.cat50,
            R.drawable.cat51, R.drawable.cat52, R.drawable.cat53, R.drawable.cat54, R.drawable.cat55, R.drawable.cat56, R.drawable.cat57, R.drawable.cat58, R.drawable.cat59, R.drawable.cat60,
            R.drawable.cat61, R.drawable.cat62, R.drawable.cat63, R.drawable.cat64, R.drawable.cat65, R.drawable.cat66, R.drawable.cat67, R.drawable.cat68, R.drawable.cat69, R.drawable.cat70,
            R.drawable.cat71, R.drawable.cat72, R.drawable.cat73, R.drawable.cat74, R.drawable.cat75, R.drawable.cat76, R.drawable.cat77, R.drawable.cat78, R.drawable.cat79, R.drawable.cat80,
            R.drawable.cat81, R.drawable.cat82, R.drawable.cat83, R.drawable.cat84, R.drawable.cat85, R.drawable.cat86, R.drawable.cat87, R.drawable.cat88, R.drawable.cat89, R.drawable.cat90,
            R.drawable.cat91, R.drawable.cat92, R.drawable.cat93, R.drawable.cat94, R.drawable.cat95, R.drawable.cat96, R.drawable.cat97, R.drawable.cat98, R.drawable.cat99, R.drawable.cat100,
    };
    private String[] mHeaderNames = {"Cute Cats", "Few Cats", "Some Cats", "Some More Cats", "Some More More Cats", "Many Cats", "Many Many Cats", "So Many Cats"};
    private Integer[] mHeaderPositions = {0, 6, 11, 37, 38, 60, 77, 89};

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fragment_item, container, false);

        gridView = (GridView) view.findViewById(R.id.grid);
        imageAdapter = new ImageAdapter(getActivity().getApplicationContext());
        for (int i = 0; i < mHeaderPositions.length; i++) {
            sections.add(new Section(mHeaderPositions[i], mHeaderNames[i]));
        }
        SimpleSectionedGridAdapter simpleSectionedGridAdapter = new SimpleSectionedGridAdapter(getActivity().getApplicationContext(), imageAdapter,
                R.layout.grid_item_header, R.id.header_layout, R.id.header);
        simpleSectionedGridAdapter.setGridView(gridView);
        simpleSectionedGridAdapter.setSections(sections.toArray(new Section[5]));
        gridView.setAdapter(simpleSectionedGridAdapter);

        return view;
    }

    public static class ViewHolder {
        @SuppressWarnings("unchecked")
        public static <T extends View> T get(View view, int id) {
            SparseArray<View> viewHolder = (SparseArray<View>) view.getTag();
            if (viewHolder == null) {
                viewHolder = new SparseArray<View>();
                view.setTag(viewHolder);
            }
            View childView = viewHolder.get(id);
            if (childView == null) {
                childView = view.findViewById(id);
                viewHolder.put(id, childView);
            }
            return (T) childView;
        }
    }

    private class ImageAdapter extends BaseAdapter {
        private LayoutInflater mInflater;

        public ImageAdapter(Context context) {
            mInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        }

        @Override
        public int getCount() {
            return mImageIds.length;
        }

        @Override
        public Object getItem(int position) {
            return null;
//            return mImageIds[position];
        }

        @Override
        public long getItemId(int position) {
            return position;
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            ImageView image;
            if (convertView == null) {
                convertView = mInflater.inflate(R.layout.grid_item, parent, false);
            }
            image = ViewHolder.get(convertView, R.id.image);

            image.setImageResource(mImageIds[position]);
            return convertView;
        }
    }
}