android自定义listview格式动态更新显示数据测试

package com.example.mylistview;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;import java.util.Timer;import java.util.TimerTask;import android.app.Activity;import android.content.Context;import android.os.Bundle;import android.os.Handler;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 MainActivity extends Activity {private int cnt = 0;private MyAdspter adapter;private Handler handler;private List<Map<String, Object>> list;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);ListView listView = (ListView) findViewById(R.id.list);list = new ArrayList<Map<String, Object>>();handler = new Handler();  adapter = new MyAdspter(this, list);listView.setAdapter(adapter);test();}private void test(){  new Timer().schedule(new TimerTask() {  public void run() {  cnt++;if(cnt <10){getData(cnt);Runnable updater = new Runnable() {  public void run() {  ((BaseAdapter) adapter).notifyDataSetChanged();  }  };  handler.post(updater); }};  }, 0, 3000);  }  public void getData(int i) {Map<String, Object> map = new HashMap<String, Object>();map.put("image", R.drawable.ic_launcher);map.put("title", "这是标题" + i);map.put("info", "这是一个详细详细信息" + i);list.add(map);}}class MyAdspter extends BaseAdapter {private List<Map<String, Object>> data;private LayoutInflater layoutInflater;public MyAdspter(Context context, List<Map<String, Object>> data) {this.data = data;this.layoutInflater = LayoutInflater.from(context);}public final class ComponentView {public ImageView image;public TextView title;public Button view;public TextView info;}@Overridepublic int getCount() {return data.size();}@Overridepublic Object getItem(int position) {return data.get(position);}@Overridepublic long getItemId(int position) {return position;}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {ComponentView cv = null;if (convertView == null) {cv = new ComponentView();convertView = layoutInflater.inflate(R.layout.list, null);cv.image = (ImageView) convertView.findViewById(R.id.image);cv.title = (TextView) convertView.findViewById(R.id.title);cv.view = (Button) convertView.findViewById(R.id.view);cv.info = (TextView) convertView.findViewById(R.id.info);convertView.setTag(cv);} else {cv = (ComponentView) convertView.getTag();}cv.image.setBackgroundResource((Integer) data.get(position).get("image"));cv.title.setText((String) data.get(position).get("title"));cv.info.setText((String) data.get(position).get("info"));return convertView;}}

布局：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context="com.example.mylistview.MainActivity" >    <ListView           android:id="@+id/list"          android:layout_width="fill_parent"          android:layout_height="fill_parent">    </ListView>  </RelativeLayout>

列表项布局：

<?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="match_parent"    android:background="#ffffff"    android:orientation="vertical" >    <LinearLayout        android:layout_width="fill_parent"        android:layout_height="fill_parent"        android:orientation="horizontal" >        <ImageView            android:id="@+id/image"            android:layout_margin="5dp"            android:layout_width="wrap_content"            android:layout_height="wrap_content" />        <LinearLayout            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_weight="1"            android:layout_marginTop="5dp"            android:orientation="vertical" >            <LinearLayout                android:layout_width="fill_parent"                android:layout_height="fill_parent">                <TextView                    android:id="@+id/title"                    android:layout_width="wrap_content"                    android:layout_height="wrap_content"                    android:textColor="#666872" />            </LinearLayout>            <LinearLayout                android:layout_width="fill_parent"                android:layout_height="fill_parent" >                <TextView                    android:id="@+id/info"                    android:layout_width="wrap_content"                    android:layout_height="wrap_content"                    android:textColor="#666872"                    android:textSize="10dp" />            </LinearLayout>        </LinearLayout>        <LinearLayout            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:gravity="right" >            <Button                android:id="@+id/view"                android:layout_width="wrap_content"                android:layout_height="fill_parent"                android:layout_centerVertical="true"                android:layout_marginTop="7dp"                 android:layout_marginRight="8dp"                 android:text="详细" />        </LinearLayout>    </LinearLayout></LinearLayout>

效果：