按照教程进行操作
不知道显示怎么成这样的效果
上下两行的间隔太大
而且文字和图片之间的间隔也很大

布局文件也进行了修改
还是不行
有遇到过类似问题的人么

希望您给我一点意见

mainactivity.java

package com.example.imageview;

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

import android.R.integer;
import android.R.string;
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.GridView;
import android.widget.SimpleAdapter;

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        GridView gridView=(GridView) findViewById(R.id.gridView1);
        int[] imageid=new int[]{R.drawable.img01,R.drawable.img02,R.drawable.img03,
                                R.drawable.img04,R.drawable.img05,R.drawable.img06,
                                R.drawable.img07};
        String[] title=new String[]{"a","b","c","d","e","f","i"};
        List<Map<String, Object>>listitems=new ArrayList<Map<String,Object>>();
        for (int i = 0; i < imageid.length; i++) {
            Map<String, Object> map=new HashMap<String, Object>();
            map.put("image", imageid[i]);
            map.put("title", title[i]);
            listitems.add(map);
        }
        SimpleAdapter adapter=new SimpleAdapter(this, 
                                                listitems, R.layout.items, 
                                                new String[]{"title","image"},
                                                new int[]{R.id.title, R.id.image});
                    gridView.setAdapter(adapter);
        }

    }

activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical">

        <GridView
        android:id="@+id/gridView1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:numColumns="4"
        android:horizontalSpacing="10dp"
        android:verticalSpacing="10dp"
         >

    </GridView>

</LinearLayout>

items.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:orientation="vertical" >

    <ImageView 
        android:id="@+id/image"
        android:layout_gravity="center"
        android:scaleType="fitCenter"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        />
    <TextView 
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:padding="5px"
        android:layout_gravity="center"
        android:id="@+id/title"
        />

</LinearLayout>