Android Simple Image Gallery

In this post we are going to use the gallery control t construct a simple image gallery.
the layout is like the previous post.

remeber that the Gallery control is populated by an adapter, so we will create a custom adapter that contains ImageViews to display the images.
our custom adapter must inherit from BaseAdapter class

package mina.android.GalleryDemo;

import java.util.ArrayList;
import java.util.List;

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

public class ImageAdapter extends BaseAdapter {
 Context Con;
 //array to hold the values of image resources
 int [] Resources;
 List views;
 
 public ImageAdapter(Context con,int[] resources)
 {
  Con=con;
  Resources=resources;
  views=new ArrayList(resources.length);
 }
 
 @Override
 public int getCount() {
  // TODO Auto-generated method stub
  return Resources.length;
 }

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

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

 @Override
 public View getView(int position, View convertView, ViewGroup parent) {
  // TODO Auto-generated method stub
  ImageView img=new ImageView(Con);
  img.setImageResource(Resources[position]);
  views.add(img);
  
  return img;
 }

}

then in our activity onCreate Method:

int []res=new int[]{R.drawable.wc,R.drawable.wc2,R.drawable.wc3,R.drawable.wc4,R.drawable.wc5};
        ItemsInGallery=res.length;
        ImageAdapter imgAdapter=new ImageAdapter(this, res);
        gallery.setAdapter(imgAdapter);

and that was our simple Image gallery.
download the application from here