Android Program to Customize GridView

package com.example.custom_grid_view;
 
import java.util.ArrayList;
 
import android.app.Activity;
import android.content.res.TypedArray;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.GridView;
import android.widget.Toast;
 
public class MainActivity extends Activity {
    private GridView gridView;
    private Myadapter adapter;
 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
 
        gridView = (GridView) findViewById(R.id.gridView);
        adapter = new Myadapter(this, R.layout.row_grid, getData());
        gridView.setAdapter(adapter);
        gridView.setOnItemClickListener(new OnItemClickListener() {
            public void onItemClick(AdapterView<?> parent, View v,
                    int position, long id) {
                Toast.makeText(MainActivity.this, position + "#Selected",
                        Toast.LENGTH_SHORT).show();
            }
 
        });
    }
 
    private ArrayList getData() {
        final ArrayList imageItems = new ArrayList();
        TypedArray imgs = getResources().obtainTypedArray(R.array.image_ids);
        for (int i = 0; i < imgs.length(); i++) {
            Bitmap bitmap = BitmapFactory.decodeResource(this.getResources(),
                    imgs.getResourceId(i, -1));
            imageItems.add(new item(bitmap, "Image#" + i));
        }
 
        return imageItems;
 
    }
 
}

package com.example.custom_grid_view;
 
import java.util.ArrayList;
 
import android.app.Activity;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.TextView;
 
public class Myadapter extends ArrayAdapter {
    private Context context;
    private int layoutResourceId;
    private ArrayList data = new ArrayList();
 
    public Myadapter(Context context, int layoutResourceId, ArrayList data) {
        super(context, layoutResourceId, data);
        this.layoutResourceId = layoutResourceId;
        this.context = context;
        this.data = data;
    }
 
    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        View row = convertView;
        ViewHolder holder = null;
 
        if (row == null) {
            LayoutInflater inflater = ((Activity) context).getLayoutInflater();
            row = inflater.inflate(layoutResourceId, parent, false);
            holder = new ViewHolder();
            holder.imageTitle = (TextView) row.findViewById(R.id.text);
            holder.image = (ImageView) row.findViewById(R.id.image);
            row.setTag(holder);
        } else {
            holder = (ViewHolder) row.getTag();
        }
 
        item item = (item) data.get(position);
        holder.imageTitle.setText(item.getTitle());
        holder.image.setImageBitmap(item.getImage());
        return row;
    }
 
    static class ViewHolder {
        TextView imageTitle;
        ImageView image;
    }
}

package com.example.custom_grid_view;
 
import android.graphics.Bitmap;
 
public class item {
    private Bitmap image;
    private String title;
 
    public item(Bitmap image, String title) {
        super();
        this.image = image;
        this.title = title;
    }
 
    public Bitmap getImage() {
        return image;
    }
 
    public void setImage(Bitmap image) {
        this.image = image;
    }
 
    public String getTitle() {
        return title;
    }
 
    public void setTitle(String title) {
        this.title = title;
    }
}