在写这篇文章之前，xxx已经写过了几篇关于改androidclass主题的文章,想要了解的朋友可以去翻一下之前的文章

    main.xml如下:

 

    listviewitem.xml如下:

    ListViewAdapter如下:

import java.util.List;import java.util.Map;import android.content.Context;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.CheckBox;import android.widget.SimpleAdapter;import android.widget.TextView;public class ListViewAdapter extends SimpleAdapter {	private List
    > mArrayList;	private int resource;	private LayoutInflater mLayoutInflater;	public ListViewAdapter(Context context,List
    > data, int resource, String[] from,int[] to) {		super(context, data, resource, from, to);		this.mArrayList=data;		this.resource=resource;		mLayoutInflater=(LayoutInflater) context.getSystemService(context.LAYOUT_INFLATER_SERVICE);	}		@Override	public int getCount() {		if (mArrayList==null) {			return 0;		} else {			return mArrayList.size();		}			}		@Override	public Object getItem(int position) {		if (mArrayList==null) {			return null;		} else {			return mArrayList.get(position);		}	}		@Override	public long getItemId(int position) {		return position;	}	    @Override    public View getView(int position, View convertView, ViewGroup parent) {    	ViewHolder viewHolder=null;    	if(convertView==null){    		viewHolder=new ViewHolder();    		convertView=mLayoutInflater.inflate(resource, null);    		viewHolder.textView=(TextView) convertView.findViewById(R.id.textView);    		viewHolder.checkBox=(CheckBox) convertView.findViewById(R.id.checkbox);;			convertView.setTag(viewHolder);		}else {			viewHolder=(ViewHolder) convertView.getTag();		}    	    	if (mArrayList!=null) {			if (viewHolder.textView!=null) {				viewHolder.textView.setText((String)(mArrayList.get(position).get("content")));			}			if (viewHolder.checkBox!=null) {				boolean isChecked=MainActivity.mCheckBoxStatusHashMap.get(position);				viewHolder.checkBox.setChecked(isChecked);			}		}		return convertView;    }        private class ViewHolder{    	TextView textView;    	CheckBox checkBox;    }}

    每日一道理

时间好比一条小溪，它能招引我们奔向生活的海洋；时间如同一叶扁舟，它将帮助我们驶向理想的彼岸；时间犹如一支画笔，它会指点我们描绘人生的画卷。

    

MainActivity如下:

import java.util.ArrayList;import java.util.HashMap;import android.os.Bundle;import android.view.View;import android.widget.AdapterView;import android.widget.CheckBox;import android.widget.AdapterView.OnItemClickListener;import android.widget.ListView;import android.app.Activity;/** * Demo描述: * ListView的Item中含有CheckBox的处置方法 * */public class MainActivity extends Activity {    private ListView mListView;    private HashMap
    
      mHashMap;	private ArrayList
     
      
       > mArrayList;    public static HashMap
       
         mCheckBoxStatusHashMap=null;	@Override	protected void onCreate(Bundle savedInstanceState) {		super.onCreate(savedInstanceState);		setContentView(R.layout.main);		init();	}	private void init(){		mCheckBoxStatusHashMap=new HashMap
        
         ();		mArrayList=new ArrayList
         
          
           >(); mListView=(ListView) findViewById(R.id.listview); addDataForListView(); mListView.setAdapter (new ListViewAdapter(MainActivity.this, mArrayList, R.layout.listviewitem, new String []{"content"}, new int []{R.id.textView})); mListView.setOnItemClickListener(new ItemClickListenerImpl()); } private void addDataForListView(){ for (int i = 0; i < 20; i++) { mHashMap=new HashMap
           
            (); mHashMap.put("content", ""+i); mArrayList.add(mHashMap); mCheckBoxStatusHashMap.put(i, false); } } private class ItemClickListenerImpl implements OnItemClickListener { @Override public void onItemClick(AdapterView
             parent, View view, int position,long arg) { ListView lv = (ListView) parent; CheckBox checkBox = (CheckBox) view.findViewById(R.id.checkbox); checkBox.toggle(); boolean itemIsCheck = checkBox.isChecked(); HashMap
            
              itemHashMap = (HashMap
             
              ) lv.getItemAtPosition(position); mCheckBoxStatusHashMap.put(position, itemIsCheck); } }}
             
            
           
          
         
        
       
      
     
    

    

 

文章结束给大家分享下程序员的一些笑话语录： Borland说我很有前途，Sun笑了；Sun说我很有钱，IBM笑了；IBM说我很专业，Sybase笑了；Sybase说我数据库很牛，Oracle笑了；Oracle说我是开放的，Linux笑了；Linux说我要打败Unix，微软笑了；微软说我的系统很稳定，我们都笑了。

--------------------------------- 原创文章 By

android和class

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