Add ability to search iTunes for podcasts

1 files changed, 187 insertions, 0 deletions

diff --git a/app/src/main/java/de/danoeh/antennapod/adapter/itunes/ItunesAdapter.java b/app/src/main/java/de/danoeh/antennapod/adapter/itunes/ItunesAdapter.java
new file mode 100644
index 000000000..4fc2838b7
--- /dev/null
+++ b/app/src/main/java/de/danoeh/antennapod/adapter/itunes/ItunesAdapter.java
@@ -0,0 +1,187 @@
+package de.danoeh.antennapod.adapter.itunes;
+
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.os.AsyncTask;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ArrayAdapter;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import org.apache.http.HttpResponse;
+import org.apache.http.client.HttpClient;
+import org.apache.http.client.methods.HttpGet;
+import org.apache.http.impl.client.DefaultHttpClient;
+import org.json.JSONException;
+import org.json.JSONObject;
+
+import java.io.IOException;
+import java.util.List;
+
+import de.danoeh.antennapod.R;
+import de.danoeh.antennapod.activity.MainActivity;
+
+public class ItunesAdapter extends ArrayAdapter<ItunesAdapter.Podcast> {
+    /**
+     * Related Context
+     */
+    private final Context context;
+
+    /**
+     * List holding the podcasts found in the search
+     */
+    private final List<Podcast> data;
+
+    /**
+     * Constructor.
+     *
+     * @param context Related context
+     * @param objects Search result
+     */
+    public ItunesAdapter(Context context, List<Podcast> objects) {
+        super(context, 0, objects);
+        this.data = objects;
+        this.context = context;
+    }
+
+    /**
+     * Updates the given ImageView with the image in the given Podcast's imageUrl
+     */
+    class FetchImageTask extends  AsyncTask<Void,Void,Bitmap>{
+        /**
+         * Current podcast
+         */
+        private final Podcast podcast;
+
+        /**
+         * ImageView to be updated
+         */
+        private final ImageView imageView;
+
+        /**
+         * Constructor
+         *
+         * @param podcast Podcast that has the image
+         * @param imageView UI image to be updated
+         */
+        FetchImageTask(Podcast podcast, ImageView imageView){
+            this.podcast = podcast;
+            this.imageView = imageView;
+        }
+
+        //Get the image from the url
+        @Override
+        protected Bitmap doInBackground(Void... params) {
+            HttpClient client = new DefaultHttpClient();
+            HttpGet get = new HttpGet(podcast.imageUrl);
+            try {
+                HttpResponse response = client.execute(get);
+                return BitmapFactory.decodeStream(response.getEntity().getContent());
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+            return null;
+        }
+
+        //Set the background image for the podcast
+        @Override
+        protected void onPostExecute(Bitmap img) {
+            super.onPostExecute(img);
+            if(img!=null) {
+                imageView.setImageBitmap(img);
+            }
+        }
+    }
+
+    @Override
+    public View getView(int position, View convertView, ViewGroup parent) {
+        //Current podcast
+        Podcast podcast = data.get(position);
+
+        //ViewHolder
+        PodcastViewHolder viewHolder;
+
+        //Resulting view
+        View view;
+
+        //Handle view holder stuff
+        if(convertView == null) {
+            view = ((MainActivity) context).getLayoutInflater()
+                    .inflate(R.layout.itunes_podcast_listitem, parent, false);
+            viewHolder = new PodcastViewHolder(view);
+            view.setTag(viewHolder);
+        } else {
+            view = convertView;
+            viewHolder = (PodcastViewHolder) view.getTag();
+        }
+
+        //Set the title
+        viewHolder.titleView.setText(podcast.title);
+
+        //Update the empty imageView with the image from the feed
+        new FetchImageTask(podcast,viewHolder.coverView).execute();
+
+        //Feed the grid view
+        return view;
+    }
+
+    /**
+     * View holder object for the GridView
+     */
+    class PodcastViewHolder {
+
+        /**
+         * ImageView holding the Podcast image
+         */
+        public final ImageView coverView;
+
+        /**
+         * TextView holding the Podcast title
+         */
+        public final TextView titleView;
+
+
+        /**
+         * Constructor
+         * @param view GridView cell
+         */
+        PodcastViewHolder(View view){
+            coverView = (ImageView) view.findViewById(R.id.imgvCover);
+            titleView = (TextView) view.findViewById(R.id.txtvTitle);
+        }
+    }
+
+    /**
+     * Represents an individual podcast on the iTunes Store.
+     */
+    public static class Podcast { //TODO: Move this out eventually. Possibly to core.itunes.model
+
+        /**
+         * The name of the podcast
+         */
+        public final String title;
+
+        /**
+         * URL of the podcast image
+         */
+        public final String imageUrl;
+        /**
+         * URL of the podcast feed
+         */
+        public final String feedUrl;
+
+        /**
+         * Constructor.
+         *
+         * @param json object holding the podcast information
+         * @throws JSONException
+         */
+        public Podcast(JSONObject json) throws JSONException {
+            title = json.getString("collectionName");
+            imageUrl = json.getString("artworkUrl100");
+            feedUrl = json.getString("feedUrl");
+        }
+    }
+}