Android编程之控件ListView使用方法

2020-04-11 11:37:18

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本文实例讲述了Android编程之控件ListView使用方法。分享给大家供大家参考。具体分析如下：

控件ListView是一个重要的控件，可以被用作用户列表等显示，下面进行它的操作测试。

下面代码实现了生成了一个ListView显示，并对每个条目的单击事件作出响应.
源代码：

package com.list; import java.util.ArrayList; import java.util.HashMap; import android.app.Activity; import android.os.Bundle; import android.util.Log; import android.view.View; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.AdapterView.OnItemSelectedListener; import android.widget.ListView; import android.widget.SimpleAdapter; public class ListTest extends Activity {  /** Called when the activity is first created. */  @Override  public void onCreate(Bundle savedInstanceState) {   super.onCreate(savedInstanceState);   setContentView(R.layout.main);   ArrayList<HashMap<String, Object>> users = new ArrayList<HashMap<String, Object>>();   for (int i = 0; i < 20; i++) {    HashMap<String, Object> user = new HashMap<String, Object>();    user.put("img", R.drawable.icon);    user.put("username", "姓名(" + i+")");    user.put("age", (20 + i) + "");    users.add(user);   }   SimpleAdapter saImageItems = new SimpleAdapter(this,     users,// 数据来源     //R.layout.user,//每一个user xml 相当ListView的一个组件     R.layout.user_layout,//每一个user xml 相当ListView的一个组件     new String[] { "img", "username", "age" },     // 分别对应view 的id     new int[] { R.id.img, R.id.name, R.id.age });   //获取适配器   ListView listView = (ListView) findViewById(R.id.users);   listView.setAdapter(saImageItems);   listView.setOnItemClickListener(new OnItemClickListener()   {    @Override    public void onItemClick(AdapterView<?> parent,View view,int position,long id)    {     ListView listView = (ListView) parent;     Log.v("Test", "id = " + id + "("+ listView.getItemAtPosition(position).toString() + ")");    }   });   /*   listView.setOnItemSelectedListener(new OnItemSelectedListener() {    @Override    public void onItemSelected(AdapterView<?> parent,View view,int position,long id)    {     ListView listView = (ListView) parent;     Log.v("Test", "id = " + id + "("+ listView.getItemAtPosition(position).toString() + ")");    }    @Override    public void onNothingSelected(AdapterView<?> parent)    {     // TODO Auto-generated method stub    }   });   */  }  }

效果图：