test

AutoLoadAdapter.java

package com.demo.view;

import java.util.ArrayList;
import java.util.List;

import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;

public class AutoLoadAdapter<T> extends BaseAdapter {

    private List<T[]> data;
    private List<T[]> cache = new ArrayList<T[]>();
    private int count;
    /** 每次加载的行数 */
    private int limit;

    public AutoLoadAdapter(List<T[]> data, int limit) {
        this.limit = limit;

        int size = data.size();
        if (size > limit) {
            cache.addAll(data.subList(limit, size));
            this.data = data.subList(0, limit);
        } else {
            this.data = data;
        }
        count = this.data.size();
    }

    @Override
    public int getCount() {
        return count;
    }

    public int cacheSize() {
        return cache.size();
    }

    public void showCache() {
        if (cache.size() <= limit) {
            data.addAll(cache);
        } else {
            data.addAll(cache.subList(0, limit));
            List<T[]> tmpCache = new ArrayList<T[]>();
            tmpCache.addAll(cache);
            cache.clear();
            cache.addAll(tmpCache.subList(limit, tmpCache.size()));
            tmpCache.clear();
        }
        count = data.size();
    }

    public void addAll(List<T[]> add) {
        if (add.size() <= limit) {
            data.addAll(add);
        } else {
            cache.addAll(add.subList(limit, add.size()));
            data.addAll(add.subList(0, limit));
        }
    }

    public void refresh() {
        count = data.size();
        notifyDataSetChanged();
    }

    public void addCache(List<T[]> add) {
        cache.addAll(add);
    }

    @Override
    public Object getItem(int position) {
        return data.get(position);
    }

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

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        return convertView;
    }

}