参照 “咪当我系欧巴”的博客~

通过使用GridView实现九宫格，布局文件如下：

main.xml

<?xml version="1.0" encoding="utf-8"?>
<GridView xmlns:android="http://schemas.android.com/apk/res/android"
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"
>

</GridView>

night_item.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="wrap_content"
android:paddingBottom="4dip" android:layout_width="fill_parent" >
<ImageView
android:layout_height="wrap_content"
android:id="@+id/ItemImage"
android:layout_width="wrap_content"
android:layout_centerHorizontal="true">
</ImageView>
<TextView
android:layout_width="wrap_content"
android:layout_below="@+id/ItemImage"
android:layout_height="wrap_content"
android:text="TextView01"
android:layout_centerHorizontal="true"
android:id="@+id/ItemText">
</TextView>

</RelativeLayout>

java源代码如下：

package com.tiejiang.sudokutest;

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

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

public class MainActivity extends Activity {

public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
GridView gridview = (GridView) findViewById(R.id.gridview);

//生成动态数组，并且转入数据
ArrayList<HashMap<String, Object>> lstImageItem = new ArrayList<HashMap<String, Object>>();
for(int i=0;i<50;i++)
{
HashMap<String, Object> map = new HashMap<String, Object>();
map.put("ItemImage", R.drawable.ic_launcher);//添加图像资源的ID(键值对)
map.put("ItemText", "NO."+String.valueOf(i+1));//按序号做ItemText
lstImageItem.add(map);
}
//生成适配器的ImageItem <====> 动态数组的元素，两者一一对应
SimpleAdapter saImageItems = new SimpleAdapter(this, //没什么解释
lstImageItem,//数据来源
R.layout.night_item,//night_item的XML实现 (对应view的布局)

//动态数组与ImageItem对应的子项
new String[] {"ItemImage","ItemText"},

//ImageItem的XML文件里面的一个ImageView,两个TextView ID
new int[] {R.id.ItemImage,R.id.ItemText});
//添加并且显示
gridview.setAdapter(saImageItems);

//添加消息处理
gridview.setOnItemClickListener(new ItemClickListener());

}

//当AdapterView被单击(触摸屏或者键盘)，则返回的Item单击事件
class ItemClickListener implements OnItemClickListener{
public void onItemClick(AdapterView<?> arg0,//The AdapterView where the click happened
View arg1,//The view within the AdapterView that was clicked
int arg2,//The position of the view in the adapter
long arg3//The row id of the item that was clicked
) {
//在本例中arg2=arg3
HashMap<String, Object> item=(HashMap<String, Object>) arg0.getItemAtPosition(arg2);
//显示所选Item的ItemText
setTitle((String)item.get("ItemText"));
}


}

}

其中主要用到的是SimpleAdapter适配器，在这里简单介绍以下参数，

impleAdapter saImageItems = new SimpleAdapter(this, data,int resource,from,to);

data:就是动态数组里面的数据了

int resource：对应的view布局

from and to 即key 和 value 的映射关系建立

 

在实现点击相应item显示在title上面时，用到的onItemClick()这个监听的参数做简单介绍，

onItemClick(AdapterView<?> arg0, View view, int position, long arg3);

arg0:所点击的item所属的listview

view：所点击的item，获得其id

position：所点击的item在相应适配器里面的位置

arg3：所点击的item在适配器里面是第几行（大部分时候position与arg3相同）