Android 自定义BaseAdapter

不要对俺的贴图做评价

看一下代码实现

package com.android.wei.zidingyib;

import android.app.Activity;
import android.app.AlertDialog;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ImageButton;
import android.widget.ListView;
import java.util.*;

public class MyActivity extends Activity {
 
    private ListView listView;
    private ImageButton imageButton;
    private ListViewAdapter listViewAdapter;
    private List<Map<String,Object>> listItems;
    private Integer[] imgeIDs = {
    	R.drawable.niao,R.drawable.niao,R.drawable.rui,R.drawable.rui,
    	R.drawable.ning,R.drawable.ning
    };
    private String[] goodsNames={
    	"土豆丝","土豆块","土豆泥","红烧土豆",
    	"麻辣土豆","清蒸土豆"
    };
    private String[] goodsDetails={
    	"土豆丝：便宜又好吃",	"土豆丝：便宜又好吃",	"土豆丝：便宜又好吃",	
    	"土豆丝：便宜又好吃",	"土豆丝：便宜又好吃",	"土豆丝：便宜又好吃",
    };
    private int[] money={
    	2,3,3,10,8,13	
    };
   
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        listView=(ListView) this.findViewById(R.id.listview);
        imageButton = (ImageButton) this.findViewById(R.id.imagebutton);
        imageButton.setOnClickListener(new  ClickEvent());
        listItems = getListItems();
        listViewAdapter = new ListViewAdapter(this,listItems);
        listView.setAdapter(listViewAdapter);
    }
    private List<Map<String,Object>> getListItems(){
    	List<Map<String,Object>> listItems = new ArrayList<Map<String,Object>>();
    	for(int i=0;i<goodsNames.length;i++){
    		Map<String,Object> map = new HashMap<String,Object>();
    		map.put("image", imgeIDs[i]);
    		map.put("title", goodsNames[i]);
    		map.put("info", money[i]+"元");
    		map.put("detail", goodsDetails[i]);
    		listItems.add(map);
    	}
    	return listItems;
    }
    class ClickEvent implements OnClickListener{
    	public void onClick(View v){
    		String goodsList="";
    		int sun=0;
    		for(int i=0;i<listItems.size();i++){
    			goodsList += listViewAdapter.hasChecked(i)?goodsNames[i]+" ":"";
    			sun +=listViewAdapter.hasChecked(i)?money[i]:0;
    			
    		}
    		new AlertDialog.Builder(MyActivity.this)
    		.setTitle("点菜清单")
    		.setMessage("你好，你选择的菜：\n"+goodsList+"\n"+"总消费额为："+sun+"元")
    		.setPositiveButton("确定",null)
    		.show();
    		
    	}
    }
}

 package com.android.wei.zidingyib;

import java.util.List;
import java.util.Map;

import android.app.AlertDialog;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.ImageView;
import android.widget.TextView;

public class ListViewAdapter extends BaseAdapter{
    private Context context;
    
    private List<Map<String,Object>> listItems;
    
    private LayoutInflater listContainer;
    
    private boolean[] hasChecked;
    public final class ListItemView{
    	public ImageView image;
    	public TextView title;
    	public TextView info;
    	public CheckBox check;
    	public Button detail;
    }
    
    public ListViewAdapter(Context context,List<Map<String,Object>> listItems){
    	this.context = context;
    	listContainer = LayoutInflater.from(context);
    	this.listItems = listItems;
    	hasChecked = new boolean[getCount()];
    }
	@Override
	public int getCount() {
		// TODO Auto-generated method stub
		return listItems.size();
	}

	@Override
	public Object getItem(int position) {
		// TODO Auto-generated method stub
		return null;
	}

	@Override
	public long getItemId(int position) {
		// TODO Auto-generated method stub
		return 0;
	}
	private void checkedChange(int checkedID){
		hasChecked[checkedID] = !hasChecked[checkedID];
	}
	public boolean hasChecked(int checkedID){
		return hasChecked[checkedID];
	}
	private void showDetailInfo(int clickID){
		new AlertDialog.Builder(context)
		   .setTitle("本菜详情:"+listItems.get(clickID).get("title"))
		   .setMessage(listItems.get(clickID).get("detail").toString())
	       .setPositiveButton("确定",null)
	       .show();
	}

	@Override
	public View getView(int position, View convertView, ViewGroup parent) {
		final int selectID= position;
		ListItemView listItemView = null;
		if(convertView ==null){
			listItemView = new ListItemView();
			convertView = listContainer.inflate(R.layout.list_item, null);
			//获得控件对象
			listItemView.image =(ImageView) convertView.findViewById(R.id.imageitem);
			listItemView.title =(TextView) convertView.findViewById(R.id.textview);
			listItemView.info =(TextView) convertView.findViewById(R.id.textview1);
			listItemView.detail=(Button) convertView.findViewById(R.id.button);
			listItemView.check = (CheckBox) convertView.findViewById(R.id.checkItem);
		   //设置空间集到convertView
			convertView.setTag(listItemView);
		}else{
			listItemView = (ListItemView) convertView.getTag();
		}
		//设置文字图片
		listItemView.image.setBackgroundResource((Integer)listItems.get(position).get("image"));
		listItemView.title.setText((String)listItems.get(position).get("title"));
		listItemView.info.setText((String) listItems.get(position).get("info"));
		listItemView.detail.setText("本菜介绍");
		listItemView.detail.setOnClickListener(new View.OnClickListener() {
			
			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				showDetailInfo(selectID);
			}
		});
		listItemView.check.setOnCheckedChangeListener(new CheckBox.OnCheckedChangeListener(){
			public void onCheckedChanged(CompoundButton buttonView,boolean isChecked){
				checkedChange(selectID);
			}
		});
		return convertView;
	}

}