android GridView的简单示例

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1.MainActivity.java文件

package com.example.gridviewdemo;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;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 android.widget.Toast;public class MainActivity extends Activity implements OnItemClickListener{private GridView gridView;private SimpleAdapter simp_adapter;private List<Map<String, Object>> mListData;int[] drawable = { R.drawable.address_book, R.drawable.calendar,R.drawable.camera, R.drawable.clock, R.drawable.games_control,R.drawable.messenger, R.drawable.ringtone, R.drawable.settings,R.drawable.speech_balloon, R.drawable.weather,R.drawable.world, R.drawable.youtube };String[] iconName = { "联系人", "日历", "照相机", "时钟", "游戏", "短信", "铃声", "设置","语音", "天气", "浏览器", "Youtube" };@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);mListData = new ArrayList<Map<String,Object>>();gridView = (GridView) findViewById(R.id.gridview);simp_adapter = new SimpleAdapter(this, getData(), R.layout.item,new String[] { "icon", "iconName" }, new int[] { R.id.image,R.id.text });gridView.setAdapter(simp_adapter);gridView.setOnItemClickListener(this);}private List<Map<String, Object>> getData() {for (int i = 0; i < iconName.length; i++) {Map<String,Object> map = new HashMap<String,Object>();map.put("icon", drawable[i]);map.put("iconName", iconName[i]);mListData.add(map);}return mListData;}@Overridepublic void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {// TODO Auto-generated method stubToast.makeText(this, "我是"+iconName[arg2], 0).show();}}

2.activity_main.xml

<LinearLayout 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:orientation="vertical"    android:gravity="center_horizontal"    tools:context="${relativePackage}.${activityClass}" >    <GridView        android:layout_marginLeft="25dp"        android:layout_marginTop="30dp"        android:id="@+id/gridview"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:numColumns="3"        android:verticalSpacing="30dp" >    </GridView></LinearLayout>

3.item.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:background="#000"    android:gravity="center_horizontal"    android:orientation="vertical" >    <ImageView        android:id="@+id/image"        android:layout_width="150dp"        android:layout_height="150dp"        android:src="@drawable/ic_launcher" />    <TextView        android:id="@+id/text"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_marginTop="10dp"        android:text="文字"        android:textColor="#FFF" /></LinearLayout>

4.实现效果

4.实现过程：

首先创建数据源：drawable和iconName数组

封装数据到List<Map<String,Object>>

创建适配器：这里用的是SimpleAdapter

最后就是为GridView添加数据源

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