Using Gallery widget : Gallery « UI « Android

1. Android
2. UI
3. Gallery

Using Gallery widget

   

package app.test;

import android.app.Activity;
import android.os.Bundle;

import android.content.Context;
import android.content.res.TypedArray;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.ImageView;
import android.widget.Toast;

public class Test extends Activity {  
  //---the images to display---
    Integer[] imageIDs = {
            R.drawable.icon,
            R.drawable.icon,
            R.drawable.icon,
            R.drawable.icon,
            R.drawable.icon,
            R.drawable.icon,
            R.drawable.icon
    };
    
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        Gallery gallery = (Gallery) findViewById(R.id.gallery1);
        
        gallery.setAdapter(new ImageAdapter(this));        
        gallery.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();
                ImageView imageView = (ImageView) findViewById(R.id.image1);                
                imageView.setImageResource(imageIDs[position]);
            }
        });
    }
    
    public class ImageAdapter extends BaseAdapter 
    {
        private Context context;
        private int itemBackground;
 
        public ImageAdapter(Context c) 
        {
            context = c;
            //---setting the style---
            TypedArray a = obtainStyledAttributes(R.styleable.Gallery1);
            itemBackground = a.getResourceId(
                R.styleable.Gallery1_android_galleryItemBackground, 0);
            a.recycle();                    
        }
 
        //---returns the number of images---
        public int getCount() {
            return imageIDs.length;
        } 
        
        //---returns the ID of an item--- 
        public Object getItem(int position) {
            return position;
        }            
        
        //---returns the ID of an item---         
        public long getItemId(int position) {
            return position;
        }
  
        //---returns an ImageView view---
        public View getView(int position, View convertView, ViewGroup parent) {
            ImageView imageView = new ImageView(context);
            imageView.setImageResource(imageIDs[position]);
            imageView.setScaleType(ImageView.ScaleType.FIT_XY);
            imageView.setLayoutParams(new Gallery.LayoutParams(150, 120));
            imageView.setBackgroundResource(itemBackground);
            return imageView;
        }
    }    
}

//main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >
    
<TextView   
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="Images of San Francisco" /> 
 
<Gallery
    android:id="@+id/gallery1"
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" />          

<ImageView
    android:id="@+id/image1"
    android:layout_width="320px" 
    android:layout_height="250px"
    android:scaleType="fitXY" />
    
</LinearLayout>

   
    
    
  

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