GridViewActivity.java :  » Map » android-smsmapview » com » studyandroid » moreview » Android Open Source

package com.studyandroid.moreview;

import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.Toast;

import com.studyandroid.R;

public class GridViewActivity extends Activity{
  Integer[] imageIDs = {
      R.drawable.pic1,
      R.drawable.pic2,
      R.drawable.pic3,
      R.drawable.pic4,
      R.drawable.pic5,
      R.drawable.pic6,
      R.drawable.pic7
    };
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.gridviewlayout);
    
    GridView gridView = (GridView) findViewById(R.id.gridview);
    gridView.setAdapter(new ImageAdapter(this));
    
    gridView.setOnItemClickListener(new OnItemClickListener() 
        {
            public void onItemClick(AdapterView parent, 
            View v, int position, long id) 
            {                
                Toast.makeText(getBaseContext(), 
                        "pic" + (position + 1) + " selected", 
                        Toast.LENGTH_SHORT).show();
            }
        });
  }
  
  public class ImageAdapter extends BaseAdapter 
    {
        private Context context;
 
        public ImageAdapter(Context c) 
        {
            context = c;
        }
 
        //---returns the number of images---
        public int getCount() {
            return imageIDs.length;
        }
 
        //---returns the ID of an item--- 
        public Object getItem(int position) {
            return position;
        }
 
        public long getItemId(int position) {
            return position;
        }
 
        //---returns an ImageView view---
        public View getView(int position, View convertView, ViewGroup parent) 
        {
            ImageView imageView;
            if (convertView == null) {
              
                imageView = new ImageView(context);
                
                imageView.setLayoutParams(new GridView.LayoutParams(85, 85));
                imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
                
                imageView.setPadding(5, 5, 5, 5);
                
            } else {
              
                imageView = (ImageView) convertView;
            }
            
            imageView.setImageResource(imageIDs[position]);
            return imageView;
        }
    }    
}