GridView学习

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MainActivity.java

package com.yql.gridviewdemo;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;import android.os.Bundle;import android.app.Activity;import android.view.Menu;import android.view.View;import android.widget.Adapter;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 List<Map<String,Object>> datalist;private SimpleAdapter adapter;private 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 };private 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.main);gridView = (GridView) findViewById(R.id.gridView);//准备数据源//新建适配器SimpleAdapter//GridView加载适配器//GridView配置事件监听器datalist = new ArrayList<Map<String,Object>>();adapter = new SimpleAdapter(this, getData(), R.layout.item, new String[]{"image","iconName"},new int[]{R.id.image,R.id.iconName});gridView.setAdapter(adapter);gridView.setOnItemClickListener(this);}private List<Map<String,Object>> getData() {for(int i=0;i<drawable.length;i++){Map map = new HashMap<String,Object>();map.put("image", drawable[i]);map.put("iconName", iconName[i]);datalist.add(map);} return datalist;}@Overridepublic void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {Toast.makeText(this, "我是："+iconName[arg2], Toast.LENGTH_SHORT).show();}}

main.xml

<?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" >    <!--android:numColumns="3" 每一行设置几列        android:horizontalSpacing="10dp" 列之间的宽度        android:verticalSpacing="10dp">  行之间的宽度         -->        <GridView         android:layout_height="wrap_content"        android:layout_width="wrap_content"        android:id="@+id/gridView"        android:numColumns="3"        android:horizontalSpacing="10dp"        android:verticalSpacing="10dp">            </GridView></LinearLayout>

item.xml

<?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"     android:gravity="center"    android:background="#000000">    <ImageView         android:src="@drawable/ic_launcher"        android:id="@+id/image"        android:layout_height="wrap_content"        android:layout_width="wrap_content"        />    <TextView         android:id="@+id/iconName"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:textColor="#FFFFFF"        android:text="文字"/></LinearLayout>

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