استفاده از گریدویو بهینه برای تمامی گوشی ها

مثال زیر نحوه استفاده از گریدویو بهینه شده برای تمامی گوشی ها نمایش داده شده که تعداد ستون  بر حسب عرض صفحه نمایش گوشی تغییر میکنه

امیدوارم مفید واقع بشه

 package com.negahetazehco.testGridView;

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;


public class testGridView extends Activity {

    Integer[] imageIDs = {
                       R.drawable.ic_launcher,
                       R.drawable.ic_launcher,
                       R.drawable.ic_launcher,
                       R.drawable.ic_launcher,
                       R.drawable.ic_launcher,
                       R.drawable.ic_launcher,
                       R.drawable.ic_launcher,
                       R.drawable.ic_launcher,
                       R.drawable.ic_launcher,
                       R.drawable.ic_launcher,
                       R.drawable.ic_launcher,
                       R.drawable.ic_launcher,
                       R.drawable.ic_launcher,
                       R.drawable.ic_launcher,
                       R.drawable.ic_launcher
                       };


    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        GridView gridView = (GridView) findViewById(R.id.gridview);
        gridView.setAdapter(new ImageAdapter(this));

        gridView.setOnItemClickListener(new OnItemClickListener()
        {

            @Override
            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---
        @Override
        public int getCount() {
            return imageIDs.length;
        }


        //---returns the ID of an item--- 
        @Override
        public Object getItem(int position) {
            return position;
        }


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


        //---returns an ImageView view---
        @Override
        public View getView(int position, View convertView, ViewGroup parent)
        {
            ImageView imageView;
            if (convertView == null) {
                imageView = new ImageView(context);
                imageView.setLayoutParams(new GridView.LayoutParams(96, 96));
                imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
                imageView.setPadding(5, 5, 5, 5);
            } else {
                imageView = (ImageView) convertView;
            }
            imageView.setImageResource(imageIDs[position]);
            return imageView;
        }
    }
}
}



//main.xml



<?xml version="1.0" encoding="utf-8"?>

<GridView xmlns:android="http://schemas.android.com/apk/res/android" 

    android:id="@+id/gridview"

    android:layout_width="fill_parent" 

    android:layout_height="fill_parent"

    android:numColumns="auto_fit"

    android:verticalSpacing="10dp"

    android:horizontalSpacing="10dp"

    android:columnWidth="90dp"

    android:stretchMode="columnWidth"

    android:gravity="center"

/>