adapter刷新加载适配

package com.example.moni2.Adapter;

import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

import com.example.moni2.Bean.NewsBean;
import com.example.moni2.Bean.XIan;
import com.example.moni2.R;
import com.nostra13.universalimageloader.core.ImageLoader;

import java.util.ArrayList;

public class Madapter extends BaseAdapter {
private Context context;
private ArrayList list;

public Madapter(Context context) {
    this.context = context;
    list = new ArrayList<>();
}

//更新数据

public void setList(ArrayList<XIan> list) {
    this.list = list;
    notifyDataSetChanged();
}

//添加数据
public void addList(ArrayList<XIan> list) {
    if (list != null) {
        this.list.addAll(list);
        notifyDataSetChanged();
    }
}

private final int one = 0;
private final int two = 1;
private final int count = 2;

//条目
@Override
public int getItemViewType(int position) {

    String pic1 = list.get(position).getPic1();
    String pic = list.get(position).getPic();
    String pic2 = list.get(position).getPic2();
    if (pic != null && pic1 != null && pic2 != null) {
        return one;
    }
    return two;
}

//条目类型数量
@Override
public int getViewTypeCount() {
    return count;
}

@Override
public int getCount() {
    return list.size();
}

@Override
public Object getItem(int position) {
    return null;
}

@Override
public long getItemId(int position) {
    return 0;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    int type = getItemViewType(position);
    if (type == one) {
        ViewHolder holder;
        holder = new ViewHolder();
        if (convertView == null) {
            convertView = View.inflate(context, R.layout.itemd, null);
            holder.title = convertView.findViewById(R.id.title);
            holder.pic = convertView.findViewById(R.id.image);
            holder.pic1 = convertView.findViewById(R.id.image1);
            holder.pic2 = convertView.findViewById(R.id.image2);
            convertView.setTag(holder);
        }
        holder = (ViewHolder) convertView.getTag();
        holder.title.setText(list.get(position).getTitle());
        ImageLoader.getInstance().displayImage(list.get(position).getPic(), holder.pic);
        ImageLoader.getInstance().displayImage(list.get(position).getPic(), holder.pic1);
        ImageLoader.getInstance().displayImage(list.get(position).getPic(), holder.pic2);
    } else {
        ViewHolder holder;
        holder = new ViewHolder();
        if (convertView == null) {
            convertView = View.inflate(context, R.layout.item, null);
            holder.title = convertView.findViewById(R.id.title);
            holder.date = convertView.findViewById(R.id.date);
            holder.pic = convertView.findViewById(R.id.image);
            convertView.setTag(holder);
        }
        holder = (ViewHolder) convertView.getTag();
        holder.title.setText(list.get(position).getTitle());
        holder.date.setText(list.get(position).getDate());
        ImageLoader.getInstance().displayImage(list.get(position).getPic(), holder.pic);
    }
    return convertView;
}

class ViewHolder {
    ImageView pic;
    ImageView pic1;
    ImageView pic2;
    TextView title;
    TextView date;
}

}