【05】GridView初次使用

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【一】效果图

【二】源程序

package min.gridview_1;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;import android.app.Activity;import android.app.ActionBar;import android.app.Fragment;import android.os.Bundle;import android.util.Log;import android.view.LayoutInflater;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.view.ViewGroup;import android.view.Window;import android.widget.GridView;import android.widget.SimpleAdapter;import android.os.Build;public class MainActivity extends Activity {    private GridView gridView;    private SimpleAdapter adapter;    private List<Map<String, Object>> dataList;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        requestWindowFeature(Window.FEATURE_NO_TITLE);        setContentView(R.layout.activity_main);        gridView=(GridView) findViewById(R.id.gridView);        dataList=new ArrayList<Map<String,Object>>();        adapter=new SimpleAdapter(this, getData(), R.layout.item, new String[]{"pic","name"}, new int[]{R.id.pic,R.id.name});        gridView.setAdapter(adapter);    }    private List<Map<String, Object>> getData() {        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" };        for (int i = 0; i < drawable.length; i++) {            Map<String, Object> map = new HashMap<String, Object>();            map.put("pic", drawable[i]);            map.put("name", iconName[i]);            dataList.add(map);        }        Log.i("Main", "size="+dataList.size());        return dataList;    }}

【三】布局代码

（1.1）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:background="#000000"    android:orientation="vertical" >    <!--     GridView是可滚动的网格。一般用来显示多张图片。     android:horizontalSpacing="5dp" 两列之间的间距是5dp     android:verticalSpacing="5dp" 两行之间的间距是5dp     android:stretchMode="spacingWidth" 缩放与列宽大小同步     android:numColumns="auto_fit" 本来是一行显示几个，现在改为自动分配    -->    <GridView        android:id="@+id/gridView"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_marginTop="15dp"        android:gravity="center_horizontal"        android:horizontalSpacing="10dp"        android:numColumns="3"        android:verticalSpacing="10dp" /></LinearLayout>

(2)其中的item.xml布局

<?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" >    <ImageView        android:id="@+id/pic"        android:layout_width="60dp"        android:layout_height="60dp"        android:layout_gravity="center"        android:src="@drawable/address_book" />    <TextView        android:id="@+id/name"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_gravity="center"        android:layout_marginTop="5dp"        android:text="名字"        android:textColor="#ffffff" /></LinearLayout>

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