GridView应用

GridView是一项显示二维的viewgroup，可滚动的网格。一般用来显示多张图片。
以下模拟九宫图的实现，当鼠标点击图片时会进行相应的跳转链接。
目录结构

main.xml布局文件，存放GridView控件


    android:id="@+id/gridview"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:numColumns="auto_fit"
    android:verticalSpacing="10dp"
    android:horizontalSpacing="10dp"
    android:columnWidth="90dp"
    android:stretchMode="columnWidth"
    android:gravity="center"
/>
night_item.xml布局文件，存放显示控件

    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_height="wrap_content"
    android:paddingBottom="4dip"
    android:layout_width="fill_parent">
            android:layout_width="wrap_content"
        android:layout_centerHorizontal="true"
        android:id="@+id/itemImage" >
   
            android:layout_below="@+id/itemImage"
        android:layout_height="wrap_content"
        android:text="TextView01"
        android:layout_centerHorizontal="true"
        android:id="@+id/itemText">
   

strings.xml


    Hello World, GvActivity!
    九宫图
    跳转到TestActivity1
    跳转到TestActivity2
    跳转到TestActivity3

清单文件

      package="com.ljq.gv"
      android:versionCode="1"
      android:versionName="1.0">
   
                          android:label="@string/app_name">
           
               
               
           
       
       
       
       
   
   


跳转类TestActivity1、TestActivity2、TestActivity3
package com.ljq.gv;

import android.app.Activity;
import android.os.Bundle;

public class TestActivity1 extends Activity {
   
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //setContentView(R.layout.main);
    }
}

package com.ljq.gv;

import android.app.Activity;
import android.os.Bundle;

public class TestActivity2 extends Activity {
   
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //setContentView(R.layout.main);
    }
}

package com.ljq.gv;

import android.app.Activity;
import android.os.Bundle;

public class TestActivity3 extends Activity {
   
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //setContentView(R.layout.main);
    }
}
类GvActivity
package com.ljq.gv;

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

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

public class GvActivity extends Activity {
    private String texts[] = null;
    private int images[] = null;
   
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
       
        images=new int[]{R.drawable.p1, R.drawable.p2,
                R.drawable.p3, R.drawable.p4,
                R.drawable.p5,R.drawable.p6,
                R.drawable.p7,R.drawable.p8};
        texts = new String[]{ "宫式布局1", "宫式布局2",
                "宫式布局3", "宫式布局4",
                "宫式布局5", "宫式布局6",
                "宫式布局7", "宫式布局8"};

        GridView gridview = (GridView) findViewById(R.id.gridview);
        ArrayList> lstImageItem = new ArrayList>();
        for (int i = 0; i < 8; i++) {
            HashMap map = new HashMap();
            map.put("itemImage", images[i]);
            map.put("itemText", texts[i]);
            lstImageItem.add(map);
        }
       
        SimpleAdapter saImageItems = new SimpleAdapter(this,
                lstImageItem,// 数据源
                R.layout.night_item,// 显示布局
                new String[] { "itemImage", "itemText" },
                new int[] { R.id.itemImage, R.id.itemText });
        gridview.setAdapter(saImageItems);
        gridview.setOnItemClickListener(new ItemClickListener());
    }

    class ItemClickListener implements OnItemClickListener {
        /**
         * 点击项时触发事件
         *
         * @param parent  发生点击动作的AdapterView
         * @param view 在AdapterView中被点击的视图(它是由adapter提供的一个视图)。
         * @param position 视图在adapter中的位置。
         * @param rowid 被点击元素的行id。
         */
        public void onItemClick(AdapterView parent, View view, int position, long rowid) {
            HashMap item = (HashMap) parent.getItemAtPosition(position);
            //获取数据源的属性值
            String itemText=(String)item.get("itemText");
            Object object=item.get("itemImage");
            Toast.makeText(GvActivity.this, itemText, Toast.LENGTH_LONG).show();
           
            //根据图片进行相应的跳转
            switch (images[position]) {
            case R.drawable.p1:
                startActivity(new Intent(GvActivity.this, TestActivity1.class));//启动另一个Activity
                finish();//结束此Activity，可回收
                break;
            case R.drawable.p2:
                startActivity(new Intent(GvActivity.this, TestActivity2.class));
                finish();
                break;
            case R.drawable.p3:
                startActivity(new Intent(GvActivity.this, TestActivity3.class));
                finish();
                break;
            }
           
        }
    }
}
运行结果

转自：http://www.th7.cn/Article/wy/ht/201102/20110223203925.html