Listview 设置不同类型的item

要想设置不同的item需要在adapter里面重写两个方法

getItemViewType() 需要注意这个个类型是0开始

getViewTypeCount();

 

package com.example.listview_01;

import java.util.List;

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

public class MyAdapter extends BaseAdapter {

    private Context context;
    private List<ViewItem> list;
    private LayoutInflater inflater;

    public MyAdapter(Context context, List<ViewItem> list) {
        this.context = context;
        this.list = list;
        inflater = LayoutInflater.from(context);
    }

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

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

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

    @Override
    public int getItemViewType(int position) {
        return list.get(position).getType();
    }

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

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        HolderType1 holderType1 = null;
        HolderType2 holderType2 = null;
        int type = getItemViewType(position);
        if (convertView == null) {
            // 根据不同的type设置不同的布局
            switch (type) {
            case 0:
                convertView = inflater.inflate(R.layout.activity_item, null);
                holderType1 = new HolderType1(convertView);
                convertView.setTag(holderType1);
                break;

            case 1:
                convertView = inflater.inflate(R.layout.activity_item2, null);
                holderType2 = new HolderType2(convertView);
                convertView.setTag(holderType2);
                break;
            }
        } else {
            // 根据不同的布局设置不同的holder
            switch (type) {
            case 0:
                holderType1 = (HolderType1) convertView.getTag();
                break;
            case 1:
                holderType2 = (HolderType2) convertView.getTag();
                break;
            }
        }

        ViewItem item = list.get(position);
        // 根据不同的布局给控件填充数据
        switch (type) {
        case 0:
            holderType1.addressTxt.setText(item.getAddress());
            holderType1.nameTxt.setText(item.getName());
            holderType1.ageTxt.setText(item.getAge());
            break;
        case 1:
            holderType2.titleTxt.setText(item.getTitle());
            break;
        }
        return convertView;
    }

    private class HolderType1 {
        public TextView nameTxt;
        public TextView ageTxt;
        public TextView addressTxt;

        public HolderType1(View convertView) {
            nameTxt = (TextView) convertView.findViewById(R.id.name);
            ageTxt = (TextView) convertView.findViewById(R.id.age);
            addressTxt = (TextView) convertView.findViewById(R.id.address);
        }
    }

    private class HolderType2 {
        public TextView titleTxt;

        public HolderType2(View convertView) {
            titleTxt = (TextView) convertView.findViewById(R.id.title);
        }
    }

}