com.desarrollodroide.youtubeincardlibs.extrasyoutube.YouTubeFragment.java Source code

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Here is the source code for com.desarrollodroide.youtubeincardlibs.extrasyoutube.YouTubeFragment.java

Source

package com.desarrollodroide.youtubeincardlibs.extrasyoutube;

import android.app.Activity;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import com.desarrollodroide.youtubeincardlibs.BaseFragment;
import com.desarrollodroide.youtubeincardlibs.PicassoCard;
import com.desarrollodroide.youtubeincardlibs.R;
import com.desarrollodroide.youtubeincardlibs.etagcache.EtagCache;
import com.google.gson.Gson;

import org.json.JSONException;
import org.json.JSONObject;

import it.gmariotti.cardslib.library.internal.Card;
import it.gmariotti.cardslib.library.internal.CardArrayAdapter;
import it.gmariotti.cardslib.library.view.CardListView;

import java.io.File;
import java.util.ArrayList;

/**
 * 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
 * <p/>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p/>
 * 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.
 * <p/>
 * <p/>
 * YouTubeFragment which contains a list view of YouTube video cards
 */
public class YouTubeFragment extends BaseFragment {

    private static final String YOUTUBE_PLAYLIST = "PLWz5rJ2EKKc_XOgcRukSoKKjewFJZrKV0";
    private static final String PLAYLIST_KEY = "PLAYLIST_KEY";
    private EtagCache mEtagCache;
    private Playlist mPlaylist;
    private CardListView listView;
    private CardArrayAdapter mCardArrayAdapter;
    private ArrayList<Card> cards = new ArrayList<Card>();
    private int mListCount = 0;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

        //Picasso.with(getActivity()).setDebugging(true);

        View rootView = inflater.inflate(R.layout.demo_extras_fragment_picasso, container, false);

        // restore the playlist after an orientation change
        if (savedInstanceState != null) {
            mPlaylist = new Gson().fromJson(savedInstanceState.getString(PLAYLIST_KEY), Playlist.class);

        }

        // ensure the adapter and listview are initialized
        if (mPlaylist != null) {
            mCardArrayAdapter = null;
            cards.clear();
            mListCount = 0;
            mPlaylist = null;
        }

        // start loading the first page of our playlist
        new GetYouTubePlaylistAsyncTask() {
            @Override
            public EtagCache getEtagCache() {
                return mEtagCache;
            }

            @Override
            public void onPostExecute(JSONObject result) {
                handlePlaylistResult(result);
            }
        }.execute(YOUTUBE_PLAYLIST, null);

        return rootView;
    }

    public void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        String json = new Gson().toJson(mPlaylist);
        outState.putString(PLAYLIST_KEY, json);
    }

    @Override
    public void onAttach(Activity activity) {
        super.onAttach(activity);
        // initialize our etag cache for this playlist
        File cacheFile = new File(activity.getFilesDir(), YOUTUBE_PLAYLIST);
        mEtagCache = EtagCache.create(cacheFile, EtagCache.FIVE_MB);
    }

    private void handlePlaylistResult(JSONObject result) {
        try {
            if (mPlaylist == null) {
                mPlaylist = new Playlist(result);
            } else {
                mPlaylist.addPage(result);
            }
            initCard();
        } catch (JSONException e) {
            e.printStackTrace();
        }
    }

    private void initCard() {
        int count = mPlaylist.getCount();

        // Init an array of Cards
        for (int i = mListCount; i < count; i++) {
            cards.add(createCard(i));

            // get the next playlist page if we're at the end of the current
            // page and we have another page to get
            final String nextPageToken = mPlaylist.getNextPageToken(i);
            if (!isEmpty(nextPageToken) && i == mPlaylist.getCount() - 1) {
                mListCount = i + 1;
                new GetYouTubePlaylistAsyncTask() {
                    @Override
                    public EtagCache getEtagCache() {
                        return mEtagCache;
                    }

                    @Override
                    public void onPostExecute(JSONObject result) {
                        handlePlaylistResult(result);
                    }
                }.execute(YOUTUBE_PLAYLIST, nextPageToken);
            }
            // Set the adapter
            mCardArrayAdapter = new CardArrayAdapter(getActivity(), cards);

            listView = (CardListView) getActivity().findViewById(R.id.carddemo_extra_list_picasso);
            if (listView != null) {
                listView.setAdapter(mCardArrayAdapter);

            }
        }

    }

    private boolean isEmpty(String s) {
        if (s == null || s.length() == 0) {
            return true;
        }
        return false;
    }

    private Card createCard(int position) {
        PlaylistItem item = mPlaylist.getItem(position);
        PicassoCard card = new PicassoCard(getActivity(), item.thumbnailUrl);
        card.setTitle(item.title);
        // card.setSecondaryTitle(item.description);
        card.setCount(position);
        return card;
    }

    @Override
    public int getTitleResourceId() {
        return R.string.carddemo_extras_title_picasso;
    }

}