XListViewAdapter

package com.example.lx2;

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

import com.nostra13.universalimageloader.core.DisplayImageOptions;
import com.nostra13.universalimageloader.core.ImageLoader;
import com.nostra13.universalimageloader.core.assist.ImageScaleType;
import com.nostra13.universalimageloader.core.display.RoundedBitmapDisplayer;

import java.util.List;

/**
 * author:Created by WangZhiQiang on 2018/4/20.
 */

public class MyAdapter extends BaseAdapter {

    List<UserBean.DataBean> item;
    Context context;
    DisplayImageOptions imageOptions;
    final int ITEM_IMG = 0;
    final int ITEM_TITLE = 1;

    public MyAdapter(List<UserBean.DataBean> item, Context context) {
        this.item = item;
        this.context = context;
        imageOptions = new DisplayImageOptions.Builder()
                .cacheInMemory(true)//使用内存缓存
                .cacheOnDisk(true)//使用磁盘缓存
                .bitmapConfig(Bitmap.Config.RGB_565)//设置图片色彩模式
                .imageScaleType(ImageScaleType.EXACTLY)//设置图片的缩放模式
                .displayer(new RoundedBitmapDisplayer(50))//设置圆角
                .build();
    }

    @Override
    public int getViewTypeCount() {
        return 2;
    }

    @Override
    public int getItemViewType(int position) {
        if (position % 2 == 0) {
            return ITEM_IMG;
        } else {
            return ITEM_TITLE;
        }
    }

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

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

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

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        int itemViewType = getItemViewType(position);
        if (itemViewType == ITEM_IMG) {
            ViewHolder holder;
            if (convertView == null) {
                holder = new ViewHolder();
                convertView = View.inflate(context, R.layout.item, null);
                holder.imageView = convertView.findViewById(R.id.img);
                holder.textView1 = convertView.findViewById(R.id.tv1);
                holder.textView2 = convertView.findViewById(R.id.tv2);
                convertView.setTag(holder);
            } else {
                holder = (ViewHolder) convertView.getTag();
            }
            holder.textView1.setText(item.get(position).getTitle());
            holder.textView2.setText(item.get(position).getContent());
            ImageLoader.getInstance().displayImage(item.get(position).getUserImg(), holder.imageView, imageOptions);
            return convertView;

        }else{
            ViewHolder1 viewHolder1;
            if(convertView==null){
                viewHolder1=new ViewHolder1();
                convertView=View.inflate(context,R.layout.item1,null);
                viewHolder1.textView3 = convertView.findViewById(R.id.tv3);
                convertView.setTag(viewHolder1);
            }else {
                viewHolder1= (ViewHolder1) convertView.getTag();
            }
            viewHolder1.textView3.setText(item.get(position).getTitle());
            return  convertView;
        }
    }
}

class ViewHolder {
    ImageView imageView;
    TextView textView1;
    TextView textView2;
}
class ViewHolder1{
    TextView textView3;
}