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
---------------------------------