[Android开发学习28]界面控件之列表控件(ListView)--显示字符数组

一、基础知识:

ListView是一个经常用到的控件，ListView里面的每个子项Item可以使一个字符串，也可以是一个组合控件。先说说ListView的实现：

1.准备ListView要显示的数据；

2.使用一维或易做图动态数组保存数据；

3.构建适配器，简单地来说，适配器就是Item数组，动态数组有多少元素就生成多少个Item；

4.把适配器添加到ListView,并显示出来。

二、代码展示:

1."Activity_10\src\yan\activity_10\MainActivity.java"

[java]
package yan.activity_10;

import java.util.ArrayList;
import java.util.HashMap;

import android.os.Bundle;
import android.view.View;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.app.ListActivity;

public class MainActivity extends ListActivity {
    private final String raw_user_name = "user_name";
    private final String raw_user_id = "user_id";
    private final String raw_user_ip = "user_ip";

    private String user_name_array[]={"zhangsan","lisi","wangwu"};
    private String user_ip_array[]={
            "192.168.1.115",
            "192.168.1.116",
            "192.168.1.117"};

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        // 生成动态数组，并且传入数据
        ArrayList <HashMap<String,String>> mylistArray = new ArrayList <HashMap<String,String>>();

        for(int i=0; i<30; ++i)
        {
            HashMap<String,String> map = new HashMap<String,String>();
            System.out.println("HAH : " + i%3);
            map.put(raw_user_name, user_name_array[i%3]);
            map.put(raw_user_id, i+1+"");
            map.put(raw_user_ip, user_ip_array[i%3]);
            mylistArray.add(map);
        }

        //生成适配器，数组-->>ListItem
        SimpleAdapter mSchedule = new SimpleAdapter(
                this,
                mylistArray,    // 数据来源
                R.layout.my_listview,   // ListItem的XML实现
                new String[] {raw_user_name,raw_user_id,raw_user_ip},   // 动态数组与ListItem对应的子项
                new int[] {R.id.user_name,R.id.user_id,R.id.user_ip}    // ListItem的XML文件里面的两个TextView ID
                );
        setListAdapter(mSchedule);
    }

    @Override
    protected void onListItemClick(ListView l, View v, int position, long id) {
        // TODO Auto-generated method stub
        super.onListItemClick(l, v, position, id);
        System.out.println("id ---------------- " + id);
        System.out.println("position ---------------- " + position);
    }


}

package yan.activity_10;

import java.util.ArrayList;
import java.util.HashMap;

import android.os.Bundle;
import android.view.View;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.app.ListActivity;

public class MainActivity extends ListActivity {
private final String raw_user_name = "user_name";
private final String raw_user_id = "user_id";
private final String raw_user_ip = "user_ip";

private String user_name_array[]={"zhangsan","lisi","wangwu"};
private String user_ip_array[]={
   "192.168.1.115",
   "192.168.1.116",
   "192.168.1.117"};

@Override
protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.main);

  // 生成动态数组，并且传入数据
  ArrayList <HashMap<String,String>> mylistArray = new ArrayList <HashMap<String,String>>();

  for(int i=0; i<30; ++i)
  {
   HashMap<String,String> map = new HashMap<String,String>();
   System.out.println("HAH : " + i%3);
   map.put(raw_user_name, user_name_array[i%3]);
   map.put(raw_user_id, i+1+"");
   map.put(raw_user_ip, user_ip_array[i%3]);
   mylistArray.add(map);
  }

  //生成适配器，数组-->>ListItem
  SimpleAdapter mSchedule = new SimpleAdapter(
    this,
    mylistArray, // 数据来源
    R.layout.my_listview, // ListItem的XML实现
    new String[] {raw_user_name,raw_user_id,raw_user_ip}, // 动态数组与ListItem对应的子项
    new int[] {R.id.user_name,R.id.user_id,R.id.user_ip} // ListItem的XML文件里面的两个TextView ID
    );
  setListAdapter(mSchedule);
}

@Override
protected void onListItemClick(List

补充：移动开发 , Android ,