Android ListView getViewTypeCount()用法总结

一般情况下ListView类型用一个就可以满足需求，但是慢慢好会发现一个类型满足不了一些设计的需求了。会有这种情况出现，ListView的Item布局方式有两种或者说多种，参数也不相同。那么解决办法来了。

先写了个demo，先上最终效果图：

接下来介绍下项目结构图：

根据效果图可以看到，demo里只写了两种不同类型的item，当然类型的多少可以在此基础上进行扩展。

主要代码在适配器里处理：

import java.util.List;
import android.content.Context;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;
import com.cs.cshuo.R;
import com.cs.cshuo.bean.BaseItem;
import com.cs.cshuo.bean.ItemBeanOne;
import com.cs.cshuo.bean.ItemBeanTwo;
import com.cs.cshuo.holder.ItemType;
import com.cs.cshuo.holder.ViewHolderOne;
import com.cs.cshuo.holder.ViewHolderTwo;

 
public class MyAdapter extends BaseAdapter {

    private LayoutInflater mInflater = null;

    private List<BaseItem> mData = null;//要显示的数据

    public MyAdapter(Context context, List<BaseItem> data){
        this.mInflater = LayoutInflater.from(context);
        this.mData = data;
    }

    //添加一个新的Item，并通知listview进行显示刷新
    public void addItem(BaseItem newItem){
        this.mData.add(newItem);
        this.notifyDataSetChanged();
    }

    @Override
    public int getItemViewType(int position) {

        return mData.get(position).getItem_type();
    }

    @Override
    public int getViewTypeCount() {
        return ItemType.ITEM_TYPE_MAX_COUNT;
    }

    @Override
    public int getCount() {
        if(mData == null){
            return 0;
        }
        return this.mData.size();
    }

    @Override
    public Object getItem(int i) {

        return mData.get(i);
    }

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

    @Override
    public View getView(final int position, View convertView, ViewGroup viewGroup) {

        View viewItem1 = null;
        View viewItem2 = null;
        int itemType = this.getItemViewType(position);
        if(itemType == ViewHolderOne.ITEM_VIEW_TYPE_0){
            //第一种item
            ViewHolderOne viewHolder1 = null;
            if(convertView == null){
                //没有缓存过
                viewHolder1 = new ViewHolderOne();
                viewItem1 = this.mInflater.inflate(R.layout.item_01, null, false);
                viewHolder1.tvName = (TextView)viewItem1.findViewById(R.id.
                        tv01);
                viewItem1.setTag(viewHolder1);
                convertView = viewItem1;
            }else{
                viewHolder1 = (ViewHolderOne)convertView.getTag();
            }
            viewHolder1.tvName.setText(((ItemBeanOne) mData.get(position)).getName());
            viewHolder1.tvName.setOnClickListener(new OnClickListener() {
                
                @Override
                public void onClick(View arg0) {
                    // TODO Auto-generated method stub
                    Log.e("", ""+((ItemBeanOne) mData.get(position)).getName());
                }
            });
        }else if(itemType == ViewHolderTwo.ITEM_VIEW_TYPE_1){
            //第二种item
            ViewHolderTwo viewHolder2 = null;
            if(convertView == null){
                //没有缓存过
                viewHolder2 = new ViewHolderTwo();
                viewItem2 = this.mInflater.inflate(R.layout.item_02, null, false);
                viewHolder2.tvName = (TextView)viewItem2.findViewById(R.id.
                        tv02);
                viewHolder2.tvSex = (TextView)viewItem2.findViewById(R.id.
                        tv02_01);
                viewItem2.setTag(viewHolder2);
                convertView = viewItem2;
            }else{
                viewHolder2 = (ViewHolderTwo)convertView.getTag();
            }
            viewHolder2.tvName.setText(((ItemBeanTwo)mData.get(position)).getName());
            viewHolder2.tvSex.setText(((ItemBeanTwo)mData.get(position)).getSex());
        
        }

        return convertView;
    }
}

 源码下载：files.cnblogs.com/files/yangcong/Cshuo.rar