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       修改源码:MainActivity.java:

java代码:

public class MainActivity extends Activity { 
private SimpleAdapter adapter;// 声明适配器对象
private ListView listView; // 声明列表视图对象
private List<Map<String, Object>> list;// 声明列表容器
public static MainActivity ma;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
ma
= this;
// 实例化列表容器
list = new ArrayList<Map<String, Object>>();
listView
= new ListView(this);// 实例化列表视图
// 实例一个列表数据容器
Map<String, Object> map = new HashMap<String, Object>();
// 往列表容器中添加数据
map.put("item1_imageivew", R.drawable.icon);
map.put(
"item1_bigtv", "BIGTV");
map.put(
"item1_smalltv", "SMALLTV");
// 将列表数据添加到列表容器中
list.add(map);
// --使用系统适配器,无法实现组件监听;
// //实例适配器
adapter = new SimpleAdapter(this, list, R.layout.main, new String[] {
"item1_imageivew", "item1_bigtv", "item1_smalltv" }, new int[] {
R.id.iv, R.id.bigtv, R.id.smalltv });
listView.setAdapter(adapter);
// //显示列表视图
this.setContentView(listView);
}
}

       到此,我们之前要求完成的要求的ListView,
       当然这里我们只是完成了界面,如果想监听中的按钮和复选框事件,那么我们肯定需要自定义一个适配器,那么下面开始介绍如何实现通用适配器:

       创建一个新类,类名:“MySimpleAdapter.java”继承BaseAdapter:

java代码:

package eoe.demo;

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;
import android.widget.CompoundButton.OnCheckedChangeListener;


/**
*
@author Himi
*
*/


public class MySimpleAdapter extends BaseAdapter {
private LayoutInflater mInflater;
private List<Map<String, Object>> list;
private int layoutID;
private String flag[];
private int ItemIDs[];
public MySimpleAdapter(Context context, List<Map<String, Object>> list,
int layoutID, String flag[], int ItemIDs[]) {
this.mInflater = LayoutInflater.from(context);
this.list = list;
this.layoutID = layoutID;
this.flag = flag;
this.ItemIDs = ItemIDs;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return list.size();
}
@Override
public Object getItem(int arg0) {
// TODO Auto-generated method stub
return 0;
}
@Override
public long getItemId(int arg0) {
// TODO Auto-generated method stub
return 0;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
convertView
= mInflater.inflate(layoutID, null);
for (int i = 0; i < flag.length; i++) {//备注1
if (convertView.findViewById(ItemIDs[i]) instanceof ImageView) {
ImageView iv
= (ImageView) convertView.findViewById(ItemIDs[i]);
iv.setBackgroundResource((Integer) list.get(position).get(
flag[i]));
}
else if (convertView.findViewById(ItemIDs[i]) instanceof TextView) {
TextView tv
= (TextView) convertView.findViewById(ItemIDs[i]);
tv.setText((String) list.get(position).get(flag[i]));
}
else{
//...备注2
}
}
addListener(convertView);
return convertView;
}

原文地址:http://www.apkway.com/forum.php?mod=viewthread&tid=2676&extra=page%3D1

posted on 2011-08-10 20:50  泉と緣  阅读(414)  评论(0编辑  收藏  举报