ViewPagerAdapter 示例

package com.ali.fridge.supermarket.module;

/**

 * Created by xiaomin.wxm on 2016/3/7.

 */

import android.support.v4.view.PagerAdapter;

import android.view.View;

import android.view.ViewGroup;

import com.ali.fridge.home.GoodsFragment;

import java.util.List;

public class ViewPagerAdapter extends PagerAdapter {

    private List<View> mList;

    private List<GoodsItem> mDataList;

    public ViewPagerAdapter(List<View> list, List<GoodsItem> dataList) {

        this.mList = list;

        this.mDataList = dataList;

    }

    @Override

    public int getCount() {

        if (mList != null && mList.size() > 0) {

            return mList.size();

        } else {

            return 0;

        }

    }

    @Override

    public boolean isViewFromObject(View arg0, Object arg1) {

        return arg0 == arg1;

    }

    @Override

    public void destroyItem(ViewGroup container, int position, Object object) {

        container.removeView((View) object);

    }

    @Override

    public Object instantiateItem(ViewGroup container, int position) {

        //container.removeView(mList.get(position));

        if (mList.get(position).getParent() != null) {

            ((ViewGroup) mList.get(position).getParent()).removeView(mList.get(position));

        }

        container.addView(mList.get(position));

        GoodsFragment.ViewHolder viewHolder = (GoodsFragment.ViewHolder) mList.get(position).getTag();

        if (mDataList.get(position).getNum() != null) {

            viewHolder.getNumView().setText((String) mDataList.get(position).getNum());

        }

        return mList.get(position);

    }

    @Override

    public int getItemPosition(Object object) {

        return POSITION_NONE;

    }

}