androidclassListView的Item含有CheckBox时的处理

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:

<RelativeLayout 
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >

    <ListView
        android:id="@+id/listview"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_centerInParent="true"
       />

</RelativeLayout>

    listviewitem.xml如下:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="70dip"
     >
    <TextView 
       android:id="@+id/textView"
       android:layout_marginLeft="80dip"
       android:layout_width="wrap_content"
       android:layout_height="50dip"
    />    
    <CheckBox 
        android:id="@+id/checkbox"
        android:layout_marginLeft="90dip"
        android:layout_width="wrap_content"
        android:layout_height="50dip"
        android:clickable="false"
        android:focusable="false"
        android:focusableInTouchMode="false"
     />
</LinearLayout>

    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<? extends Map<String, ?>> mArrayList;
	private int resource;
	private LayoutInflater mLayoutInflater;
	public ListViewAdapter(Context context,List<? extends Map<String, ?>> 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<String, Object> mHashMap;
	private ArrayList<HashMap<String, Object>> mArrayList;
    public static HashMap<Integer, Boolean> mCheckBoxStatusHashMap=null;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		init();
	}
	private void init(){
		mCheckBoxStatusHashMap=new HashMap<Integer, Boolean>();
		mArrayList=new ArrayList<HashMap<String,Object>>();
		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<String, Object>();
			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<String, Object> itemHashMap = (HashMap<String, Object>) 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
---------------------------------