GridView的属性和方法如下：

android:columnWidth-->设置列的宽度-->方法：setColumnwidth(int)

android:graity-->设置对齐方式：-->方法：setGrity(int)

android:horizontalSpacing-->设置各元素之间的水平间距-->方法:setHorizontalSpacing(int)

android:verticalSpacing-->设置各元素之间的垂直间距-->方法：setVerticalSpacing(int)

android:numColumns-->设置列数-->方法：setNumColumns(int)

android:stretchMode-->设置拉伸模式-->方法：setStretchMode(int)

实例如下：

activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:layout_margin="5dp"
    tools:context=".MainActivity">

    <GridView
        android:id="@+id/gridView"
        android:numColumns="4"
        android:horizontalSpacing="1pt"
        android:verticalSpacing="1pt"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>
    <ImageView
        android:id="@+id/imageView"
        android:layout_gravity="center_horizontal"
        android:layout_width="240px"
        android:layout_height="240px" />

</LinearLayout>

每一格的局部布局文件：image_call.xml

<?xml version="1.0" encoding="utf-8"?>
<ImageView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/imageView3"
    android:layout_width="30pt"
    android:layout_height="30pt">

</ImageView>

MainActivity.java

package cn.edu.hpu.acm.gridViewTest;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.SimpleAdapter;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class MainActivity extends AppCompatActivity {
    //定义属性
    private GridView gridView;
    private ImageView imageView;
    //定义Image数组
    int[] imagesId = {
            R.drawable.a1,
            R.drawable.a2,
            R.drawable.a3,
            R.drawable.a4,
            R.drawable.a5,
            R.drawable.a6,
            R.drawable.a7,
            R.drawable.a8
    };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //得到控件
        gridView = (GridView) findViewById(R.id.gridView);
        imageView = (ImageView) findViewById(R.id.imageView);
        //声明List<E>数组，这里的E为Map<String,?>
        List<Map<String,Object>> listItems = new ArrayList<Map<String, Object>>();
        //设置Map<String,?>数组的键值
        for (int i=0;i<imagesId.length;i++){
            Map<String,Object> listItem = new HashMap<String, Object>();
            listItem.put("imageView3",imagesId[i]);
            //添加到List数组中
            listItems.add(listItem);
        }
        //设置SimpleAdapter属性
        SimpleAdapter simpleAdapter = new SimpleAdapter(this,listItems,
                R.layout.image_cell,new String[]{"imageView3"},
                new int[]{R.id.imageView3});
        //设置GridView的Adapter属性
        gridView.setAdapter(simpleAdapter);
        //设置选择事件，这里没有什么用可以不要
        gridView.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
            @Override
            public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
                imageView.setImageResource(imagesId[position]);
            }

            @Override
            public void onNothingSelected(AdapterView<?> parent) {

            }
        });
        //设置点击事件，点击事件可以是任何东西
        gridView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                imageView.setImageResource(imagesId[position]);
            }
        });
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }
}

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