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Android example source code file (

This example Android source code file ( is included in the "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" TM.

Java - Android tags/keywords

android, baseadapter, content, context, database, imageadapter, imagemanager, imageview, layoutinflater, mydatasetobserver, object, override, panoramioitem, textview, ui, view, viewgroup, widget

The Android example source code

 * Copyright (C) 2008 Google Inc.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * See the License for the specific language governing permissions and
 * limitations under the License.


import android.content.Context;
import android.database.DataSetObserver;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

 * Adapter used to bind data for the main list of photos
public class ImageAdapter extends BaseAdapter {

     * Maintains the state of our data
    private ImageManager mImageManager;

    private Context mContext;
    private MyDataSetObserver mObserver;

     * Used by the {@link ImageManager} to report changes in the list back to
     * this adapter.
    private class MyDataSetObserver extends DataSetObserver {
        public void onChanged() {

        public void onInvalidated() {
    public ImageAdapter(Context c) {
        mImageManager = ImageManager.getInstance(c);
        mContext = c;
        mObserver = new MyDataSetObserver();

     * Returns the number of images to display
     * @see android.widget.Adapter#getCount()
    public int getCount() {
        return mImageManager.size();

     * Returns the image at a specified position
     * @see android.widget.Adapter#getItem(int)
    public Object getItem(int position) {
        return mImageManager.get(position);

     * Returns the id of an image at a specified position
     * @see android.widget.Adapter#getItemId(int)
    public long getItemId(int position) {
        PanoramioItem s = mImageManager.get(position);
        return s.getId();

     * Returns a view to display the image at a specified position
     * @param position The position to display
     * @param convertView An existing view that we can reuse. May be null.
     * @param parent The parent view that will eventually hold the view we return.
     * @return A view to display the image at a specified position
    public View getView(int position, View convertView, ViewGroup parent) {
        View view;
        if (convertView == null) {
            // Make up a new view
            LayoutInflater inflater = (LayoutInflater) mContext
            view = inflater.inflate(R.layout.image_item, null);
        } else {
            // Use convertView if it is available
            view = convertView;
        PanoramioItem s = mImageManager.get(position);

        ImageView i = (ImageView) view.findViewById(;
        TextView t = (TextView) view.findViewById(;
        t = (TextView) view.findViewById(;
        return view;


Other Android examples (source code examples)

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