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原文网址:http://blog.csdn.net/jueblog/article/details/11857281
使用BaseAdapter实现复杂的ListView的步骤:
1. 数据你要准备好 List getData()。
2. 继承ListActivity专有屏,不再需要setContentView(xxx)。
3. 创建一个继承自BaseAdapter的类。
4. 为List绑定适配器 setListAdapter(adapter)。
5. 用传统的方式来覆写适配器的getView函数 (从参数convertView里映射布局文件,find各个控件填充数据)。
6. 改写:加入ViewHolder类(定义n个控件的声明) 。 用convertView.setTag(viewHolder)在View和Object之间进行关联.。
7. 给按钮注册点击监听器。可以用Toast或AlertDialogue弹出选择项的数据。
friend_list.xml文件
- <?xml version="1.0" encoding="utf-8"?>
- <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
- android:layout_width="match_parent"
- android:layout_height="fill_parent"
- android:background="#fff"
- android:orientation="vertical" >
- <TextView
- android:id="@+id/textView1"
- android:layout_width="match_parent"
- android:layout_height="50dp"
- android:text="微信"
- android:background="#2B3439"
- android:gravity="center"
- android:textSize="20sp"
- android:textColor="#FFFFFF"/>
-
-
-
- <LinearLayout
- android:layout_width="match_parent"
- android:layout_height="wrap_content"
- android:layout_marginLeft="18dp"
- android:layout_marginRight="18dp"
- android:layout_marginTop="2dp"
- android:layout_marginBottom="2dp"
- android:background="@drawable/btn_style_four_normal">
- <ImageView
- android:id="@+id/imageView1"
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:src="@drawable/sm_searchbtn"
- android:layout_marginRight="10dp"/>
- <EditText
- android:id="@+id/editText1"
- android:layout_width="match_parent"
- android:layout_height="35dp"
- android:background="@null"
- android:ems="10" >
- <requestFocus />
- </EditText>
- </LinearLayout>
-
- <ListView
- android:id="@+id/listView1"
- android:layout_width="match_parent"
- android:paddingBottom="50dp"
- android:cacheColorHint="#00000000"
- android:layout_height="match_parent" >
- </ListView>
-
- </LinearLayout>
friend_list_item.xml文件
- <?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="80dp"
- android:orientation="horizontal"
- android:padding="5dip"
- android:paddingBottom="15dp" >
-
- <ImageView
- android:id="@+id/img"
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:layout_margin="5dp" />
-
- <LinearLayout
- android:layout_width="fill_parent"
- android:layout_height="wrap_content"
- android:orientation="vertical" >
-
- <LinearLayout
- android:layout_width="fill_parent"
- android:layout_height="wrap_content"
- android:orientation="horizontal" >
-
- <TextView
- android:id="@+id/title"
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:textColor="#000"
- android:textSize="20sp" />
-
- <TextView
- android:id="@+id/time"
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:layout_marginLeft="110dp"
- android:textColor="#000"
- android:textSize="18sp" />
- </LinearLayout>
-
- <TextView
- android:id="@+id/info"
- android:layout_width="wrap_content"
- android:layout_height="fill_parent"
- android:layout_marginTop="3dp"
- android:textColor="#000"
- android:textSize="15sp" />
- </LinearLayout>
-
- </LinearLayout>
WeixinActivity.java文件
- package com.app.weixin;
-
- import java.util.ArrayList;
- import java.util.HashMap;
- import java.util.List;
-
- import com.app.wexin.R;
-
- import android.app.Activity;
- import android.app.AlertDialog;
- import android.content.Context;
- import android.content.DialogInterface;
- import android.content.Intent;
- import android.os.Bundle;
- import android.view.LayoutInflater;
- import android.view.View;
- import android.view.ViewGroup;
- import android.widget.BaseAdapter;
- import android.widget.Button;
- import android.widget.ImageView;
- import android.widget.ListView;
- import android.widget.TextView;
-
- public class WeixinActivity extends Activity {
- private ImageView img;
- private List<HashMap<String, Object>> mData;
- private ListView listView;
-
- @Override
- protected void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.friend_list);
- mData = getData();
- MyAdapter adapter = new MyAdapter(this);
-
- listView = (ListView) findViewById(R.id.listView1);
- listView.setAdapter(adapter);
- }
-
-
- public class MyAdapter extends BaseAdapter {
- private LayoutInflater mInflater;
-
- public MyAdapter(Context context) {
- this.mInflater = LayoutInflater.from(context);
- }
-
-
- @Override
- public int getCount() {
- return mData.size();
- }
-
- @Override
- public Object getItem(int arg0) {
- return null;
- }
-
- @Override
- public long getItemId(int arg0) {
- return 0;
- }
-
- @Override
- public View getView(int position, View convertView, ViewGroup parent) {
- convertView = mInflater.inflate(R.layout.friend_list_item, null);
- TextView title = (TextView) convertView.findViewById(R.id.title);
- title.setText(mData.get(position).get("title").toString());
- TextView time = (TextView) convertView.findViewById(R.id.time);
- time.setText(mData.get(position).get("time").toString());
- TextView info = (TextView) convertView.findViewById(R.id.info);
- info.setText(mData.get(position).get("info").toString());
- img = (ImageView) convertView.findViewById(R.id.img);
- img.setBackgroundResource((Integer) mData.get(position).get("img"));
- return convertView;
- }
- }
-
- private List<HashMap<String, Object>> getData() {
-
- ArrayList<HashMap<String, Object>> list = new ArrayList<HashMap<String, Object>>();
- HashMap<String, Object> map = null;
- for (int i = 1; i <= 40; i++) {
- map = new HashMap<String, Object>();
- map.put("title", "人物" + i);
- map.put("time", "9月20日");
- map.put("info", "我通过了你的好友验证请求");
- map.put("img", R.drawable.pic_person);
- list.add(map);
- }
-
- return list;
- }
- public void showInfo(int position){
- getData();
- }
- }
效果图
![技术分享](http://img.blog.csdn.net/20130921002531406?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvanVlYmxvZw==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center)
![技术分享](http://img.blog.csdn.net/20130921002525515?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvanVlYmxvZw==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center)
【转】【Android】使用BaseAdapter实现复杂的ListView
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原文地址:http://www.cnblogs.com/wi100sh/p/4461675.html