Android GridView简单实例

GridView：简单样例GridViewActivity：

package com.example.myapi.gridview;

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

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.GridView;
import android.widget.SimpleAdapter;

import com.example.myapi.R;

/**
 * 列表
 * @author USER
 *
 */
public class GridViewActivity extends Activity{
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.gridview);
        GridView gridView = (GridView)findViewById(R.id.gridview);
        gridView.setVerticalScrollBarEnabled(false);//禁用垂直滚动条
        //生成动态数组
        ArrayList<HashMap<String,Object>> listItem = new ArrayList<HashMap<String,Object>>();
        for(int i=1;i<=42;i++){
            HashMap<String,Object> item = new HashMap<String,Object>();
            item.put("ItemText", String.valueOf(""+i));
            listItem.add(item);
        }
        //创建Adapter充当数据源
        SimpleAdapter adapter = new SimpleAdapter(this, listItem, R.layout.gridviewitem, new String[]{"ItemText"}, new int[]{R.id.griditem_tv});
        gridView.setAdapter(adapter);
        gridView.setOnItemClickListener(new ItemClickListener());
        
    }
    /**
     * GridView每一项的点击事件
     * @author USER
     *
     */
    class ItemClickListener implements OnItemClickListener{

        public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
                long arg3) {
            HashMap<String,Object> item = (HashMap<String,Object>)arg0.getItemAtPosition(arg2);//获取所选项内容
            
        }
        
    }

}

2.主xml文件，里面只有一个GridView：

<?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:orientation="vertical" >
    
    <GridView 
        android:id="@+id/gridview"  
        android:layout_width="fill_parent"   
        android:layout_height="fill_parent"  
        android:numColumns="7"  
        android:verticalSpacing="3dp"  
        android:horizontalSpacing="3dp"  
        android:columnWidth="30dp"  
        android:stretchMode="columnWidth"  
        android:gravity="center"  
    />  
    

</LinearLayout>

2.GridView中每一项的布局文件：

<?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="match_parent"
    android:orientation="vertical" >
    <TextView 
        android:id="@+id/griditem_tv"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:background="#FF909090"
        android:layout_gravity="center_horizontal"
        />    
</LinearLayout>

 

备注：可复制粘贴到项目中，体会一下就会明白。