displaying a full screen image from grid view

[ef32]

I am trying to create an application that customizes shirts on android, now on my application i have created a gridview that shows the thumbnails of shirts for the user to select, i want the user to be able to click on any image and it displays as fullscreen in another activity, i havent been able to do it, i am stuck and i dont know where to continue or what to do.. please its my final year project, can someone help? below is my code:

The grid view code:

package com.efe.topprint;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.GridView;
import android.widget.Toast;


public class Gold extends Activity {
		public void onCreate(Bundle savedInstanceState) {
		       super.onCreate(savedInstanceState);
		     
		       setContentView(R.layout.gold);
		       
		       GridView gridview = (GridView) findViewById(R.id.gridview);
		        gridview.setAdapter(new ImageAdapter(this));

		        gridview.setOnItemClickListener(new AdapterView.OnItemClickListener() {
		            public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
		             Toast.makeText(Gold.this, "" + position, Toast.LENGTH_SHORT).show();
		            	
		    }
		});
	   }
}

The Imageadaptercode:

package com.efe.topprint;

import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;

public class ImageAdapter extends BaseAdapter {
    private Context mContext;

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

    public int getCount() {
        return mThumbIds.length;
    }

    public Object getItem(int position) {
        return null;
    }

    public long getItemId(int position) {
        return position;
    }

    // create a new ImageView for each item referenced by the Adapter
    public View getView(int position, View convertView, ViewGroup parent) {
        ImageView imageView;
        if (convertView == null) {  // if it's not recycled, initialize some attributes
            imageView = new ImageView(mContext);
            imageView.setLayoutParams(new GridView.LayoutParams(85, 85));
            imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
            imageView.setPadding(8, 8, 8, 8);
        } else {
            imageView = (ImageView) convertView;
        }

        imageView.setImageResource(mThumbIds[position]);
        return imageView;
    }

    // references to our images
    public static Integer[] mThumbIds = {
            R.drawable.gold, R.drawable.gold,
            R.drawable.gold, R.drawable.gold,
            R.drawable.gold, R.drawable.gold,
            R.drawable.gold, R.drawable.gold,
            R.drawable.gold, R.drawable.gold,
            R.drawable.gold, R.drawable.gold,
            R.drawable.gold, R.drawable.gold,
            R.drawable.gold, R.drawable.gold,
    };
}

everyhelp will be appreciated, i have 2 days to hand this in. its bin tough