Gallery上边图片下边文字显示并且支持大图预览

package com.tinybai.android.galleryimgandtext;

import android.content.Context;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.ImageView;
import android.widget.TextView;
/**
 * 
 * ClassName: MainActivity <br/>
 * Function: TODO ADD FUNCTION. <br/>
 * Reason: TODO ADD REASON(可选). <br/>
 * date: 2015年1月27日 上午11:18:44 <br/>
 *
 * @author caofei 982112095@qq.com
 * @version 
 * @since 2015年1月27日
 */
public class MainActivity extends ActionBarActivity {
    private Integer[] img = { R.drawable.jay1, R.drawable.jay2,
            R.drawable.jay3, R.drawable.jay4, R.drawable.jay5, R.drawable.jay6,
            R.drawable.jay7, R.drawable.jay8 };

    private String[] str = { "jay1", "jay2", "jay3", "jay4", "jay5", "jay6",
            "jay7", "jay8" };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        Gallery gallery = (Gallery) findViewById(R.id.gallery);
        gallery.setAdapter(new galleryAdapter(this));
        gallery.setSelection(0);//默认显示第一张图片
        gallery.setSpacing(20);//图片之间距离
        gallery.setOnItemClickListener(new OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view,
                    int position, long id) {
                // TODO Auto-generated method stub
                ImageView imageResult = (ImageView) findViewById(R.id.imageresult);
                imageResult.setImageResource(img[position]);

            }
        });
    }

    public class galleryAdapter extends BaseAdapter {

        private Context mContext;

        public galleryAdapter(Context c) {
            mContext = c;
        }

        @Override
        public int getCount() {
            // TODO Auto-generated method stub
            return img.length;
        }

        @Override
        public Object getItem(int position) {
            // TODO Auto-generated method stub
            return position;
        }

        @Override
        public long getItemId(int position) {
            // TODO Auto-generated method stub
            return position;
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            // TODO Auto-generated method stub
            ViewHolder holder;
            if (convertView == null) {
                holder = new ViewHolder();
                convertView = View.inflate(mContext, R.layout.imgandtext, null);
                holder.pic = (ImageView) convertView.findViewById(R.id.image);
                holder.text = (TextView) convertView.findViewById(R.id.text);
                convertView.setTag(holder);
            } else {
                holder = (ViewHolder) convertView.getTag();
            }
            holder.pic.setImageResource(img[position]);
            holder.text.setText(str[position]);
            return convertView;
        }

        class ViewHolder {
            private ImageView pic;
            private TextView text;
        }

    }
}

<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:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/hello_world" />

    <Gallery
        android:id="@+id/gallery"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" />

    <ImageView
        android:id="@+id/imageresult"
        android:layout_width="300dp"
        android:layout_height="300dp"
        android:layout_gravity="center" />

</LinearLayout>

<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:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin" >

    <ImageView
        android:id="@+id/image"
        android:layout_width="100dp"
        android:layout_height="100dp"
        android:layout_gravity="center_horizontal" />

    <TextView
        android:id="@+id/text"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:gravity="center"
        android:textSize="12dp" />

</LinearLayout>