GridView控件的简单使用

如果是多行单列,使用listview;
如果是多行多列,使用gridview;

activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical"    android:background="#000"    >    <GridView        android:id="@+id/gview"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:numColumns="auto_fit"        android:columnWidth="150dp"        android:stretchMode="columnWidth"        android:listSelector="@drawable/mylist_view"    >GridView>LinearLayout>

GridView的属性介绍:
android:numColumns=”auto_fit” -列数设置为自动
android:columnWidth=”90dp”，-每列的宽度，也就是Item的宽度
android:stretchMode=”columnWidth”-缩放与列宽大小同步
android:verticalSpacing=”10dp”-垂直边距
android:horizontalSpacing=”10dp”-水平边距

好了,Gridview控件如何写入知道了,下面进行数据的构成
1、准备数据源 —— 准备几张不同的图片

2、新建适配器 —— SimpleAdapter

3、加载适配器 —— setAdapter()

MainActivity.java

package com.example.testgridview;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.widget.GridView;import android.widget.SimpleAdapter;public class MainActivity extends Activity {    private GridView gview;    private List> data_list;    private SimpleAdapter sim_adapter;    // 图片封装为一个数组    private int[] icon = { 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 = { "通讯录", "日历", "照相机", "时钟", "游戏", "短信", "铃声",            "设置", "语音", "天气", "浏览器", "视频" };    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.test);        gview = (GridView) findViewById(R.id.gview);        //新建List        data_list = new ArrayList>();        //获取数据        getData();        //新建适配器        String [] from ={"image","text"};        int [] to = {R.id.image,R.id.text};        sim_adapter = new SimpleAdapter(this, data_list, R.layout.item, from, to);        //配置适配器        gview.setAdapter(sim_adapter);    }    public List> getData(){                //cion和iconName的长度是相同的，这里任选其一都可以        for(int i=0;i map = new HashMap();            map.put("image", icon[i]);            map.put("text", iconName[i]);            data_list.add(map);        }        return data_list;    }}

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:orientation="vertical"     android:gravity="center"    android:padding="10dp"    >    <ImageView         android:src="@drawable/ic_launcher"        android:id="@+id/image"        android:layout_width="60dp"        android:layout_height="60dp"        />    <TextView         android:id="@+id/text"        android:layout_marginTop="5dp"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:textColor="#ffffff"        android:text="文字"        />LinearLayout>

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