Android常用控件之GridView的使用
GridView是按照行列的方式来显示内容，一般是用来显示图片；
下面这张图就是用GridView实现的
首先定义布局文件main.xml
package com.example.gridviewdemo;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;import android.os.Bundle;import android.view.View;import android.view.ViewGroup;import android.widget.AdapterView;import android.widget.AdapterView.OnItemClickListener;import android.widget.BaseAdapter;import android.widget.GridView;import android.widget.ImageView;import android.widget.SimpleAdapter;import android.app.Activity;public class MainActivity extends Activity {private int[] imageId = new int[] { R.drawable.img01, R.drawable.img02,R.drawable.img03, R.drawable.img04, R.drawable.img05,R.drawable.img06, R.drawable.img07, R.drawable.img08,R.drawable.img09, R.drawable.img10, R.drawable.img11,R.drawable.img12, }; // 定义并初始化保存图片id的数组@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);GridView gridview = (GridView) findViewById(R.id.gridView1); // 获取GridView组件/*********************** 使用SimpleAdapter指定要显示的内容 *********************************/String[] title = new String[] { "NO1", "NO2", "NO3", "NO4", "NO5","NO6", "NO7", "NO8", "NO9", "NO10", "NO11", "NO12" }; // 定义并初始化保存说明文字的数组List<Map<String, Object>> listItems = new ArrayList<Map<String, Object>>();// 创建一个list集合// 通过for循环将图片id和列表项文字放到Map中，并添加到list集合中for (int i = 0; i < imageId.length; i++) {Map<String, Object> map = new HashMap<String, Object>();map.put("image", imageId[i]);map.put("title", title[i]);listItems.add(map); // 将map对象添加到List集合中} SimpleAdapter adapter = new SimpleAdapter(this, listItems, R.layout.items, new String[] { "title", "image" }, new int[] {R.id.title, R.id.image } ); // 创建SimpleAdapter gridview.setAdapter(adapter); // 将适配器与GridView关联 //为GridView设定监听器 gridview.setOnItemClickListener(new gridViewListener()); }class gridViewListener implements OnItemClickListener{@Overridepublic void onItemClick(AdapterView<?> arg0, View arg1, int arg2,long arg3) {// TODO Auto-generated method stubSystem.out.println("arg2 = " + arg2); //打印出点击的位置}}}