Java tutorial
/** * Copyright 2014 iMobilize Ltd. * * 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 * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations * under the License. */ package com.imobilize.blogposts.adapters; import java.util.ArrayList; import java.util.List; import org.json.JSONArray; import org.json.JSONException; import android.content.Context; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.ArrayAdapter; import android.widget.TextView; import com.android.volley.toolbox.NetworkImageView; import com.imobilize.blogposts.articles.Article; import com.imobilize.blogposts.cachemanagers.ImageCacheManager; import com.imobilize.blogposts.constants.Constants; import info.androidhive.slidingmenu.R; public class ArticlesArrayAdapter extends ArrayAdapter<String> { public List<Article> articles = new ArrayList<Article>(); public ArticlesArrayAdapter(Context context, JSONArray response) { super(context, R.layout.listview_layout); for (int i = 0; i < response.length(); i++) { try { articles.add(new Article(response.getJSONObject(i))); } catch (JSONException e) { e.printStackTrace(); } } } @Override public View getView(int position, View convertView, ViewGroup parent) { View v = convertView; ViewHolder viewHolder; if (v == null) { LayoutInflater inflater = (LayoutInflater) getContext() .getSystemService(Context.LAYOUT_INFLATER_SERVICE); v = inflater.inflate(R.layout.listview_layout, null); viewHolder = new ViewHolder(); viewHolder.articleImage = (NetworkImageView) v.findViewById(R.id.articleImage); viewHolder.articleTitle = (TextView) v.findViewById(R.id.articleTitle); viewHolder.articleDescription = (TextView) v.findViewById(R.id.articleDescription); viewHolder.articleMetadata = (TextView) v.findViewById(R.id.articleMetadata); v.setTag(viewHolder); } else { viewHolder = (ViewHolder) v.getTag(); } Article article = articles.get(position); if (article != null) { viewHolder.articleImage.setImageUrl( Constants.blogHostAndPort + Constants.blogURLFirstPart + article.getKey(), ImageCacheManager.getInstance().getImageLoader()); viewHolder.articleTitle.setText(article.getTitle()); viewHolder.articleDescription.setText(article.getDescription()); viewHolder.articleMetadata .setText("Posted by " + article.getAuthor() + " on " + article.getCreationDate()); viewHolder.articleContent = article.getContent(); viewHolder.articleKey = article.getKey(); } return v; } @Override public int getCount() { return articles.size(); } public static class ViewHolder { private NetworkImageView articleImage; private TextView articleTitle; private TextView articleDescription; private TextView articleMetadata; private String articleContent; private String articleKey; public NetworkImageView getArticleImage() { return articleImage; } public TextView getArticleTitle() { return articleTitle; } public TextView getArticleDescription() { return articleDescription; } public TextView getArticleMetadata() { return articleMetadata; } public String getArticleContent() { return articleContent; } public String getArticleKey() { return articleKey; } } }