Java tutorial
/* * Copyright 2012 Javier Prez Pacheco and Francisco Daz Rodriguez * TweetTopics 2.0 * javielinux@gmail.com * * 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.javielinux.api.loaders; import android.content.ContentValues; import android.content.Context; import android.content.SharedPreferences; import android.database.Cursor; import android.database.SQLException; import android.preference.PreferenceManager; import com.android.dataframework.DataFramework; import com.javielinux.api.AsynchronousLoader; import com.javielinux.api.request.LoadMoreTweetDownRequest; import com.javielinux.api.response.BaseResponse; import com.javielinux.api.response.ErrorResponse; import com.javielinux.api.response.LoadMoreTweetDownResponse; import com.javielinux.infos.InfoTweet; import com.javielinux.tweettopics2.R; import com.javielinux.twitter.ConnectionManager; import com.javielinux.utils.TweetTopicsUtils; import com.javielinux.utils.Utils; import twitter4j.*; import java.util.ArrayList; import java.util.List; public class LoadMoreTweetDownLoader extends AsynchronousLoader<BaseResponse> { private LoadMoreTweetDownRequest request; public LoadMoreTweetDownLoader(Context context, LoadMoreTweetDownRequest request) { super(context); this.request = request; } @Override public BaseResponse loadInBackground() { try { LoadMoreTweetDownResponse response = new LoadMoreTweetDownResponse(); PreferenceManager.setDefaultValues(getContext(), R.xml.preferences, false); SharedPreferences pref = PreferenceManager.getDefaultSharedPreferences(getContext()); int maxDownloadTweet = Integer.parseInt(pref.getString("prf_n_max_download", "60")); if (maxDownloadTweet <= 0) maxDownloadTweet = 60; ConnectionManager.getInstance().open(getContext()); Twitter twitter = ConnectionManager.getInstance().getTwitter(request.getUserId()); Paging p = new Paging(); p.setCount(maxDownloadTweet); p.setSinceId(request.getSinceId()); p.setMaxId(request.getMaxId()); ResponseList<Status> statii = null; try { statii = twitter.getHomeTimeline(p); } catch (OutOfMemoryError e) { e.printStackTrace(); } boolean breakTimeline = false; if (statii != null && statii.size() >= maxDownloadTweet - 10) { p = new Paging(1, 10); p.setSinceId(request.getSinceId()); p.setMaxId(statii.get(statii.size() - 1).getId()); if (twitter.getHomeTimeline().size() > 0) { breakTimeline = true; response.setHasMoreTweets(true); } } if (statii != null) { if (statii.size() > 0) { try { DataFramework.getInstance().open(getContext(), Utils.packageName); } catch (Exception e) { e.printStackTrace(); } List<InfoTweet> tweets = new ArrayList<InfoTweet>(); for (Status status : statii) { tweets.add(new InfoTweet(status)); } response.setTweets(tweets); long nextId = 1; Cursor c = DataFramework.getInstance().getCursor("tweets_user", new String[] { DataFramework.KEY_ID }, null, null, null, null, DataFramework.KEY_ID + " desc", "1"); if (!c.moveToFirst()) { c.close(); nextId = 1; } else { long Id = c.getInt(0) + 1; c.close(); nextId = Id; } try { boolean isFirst = true; for (int i = statii.size() - 1; i >= 0; i--) { User u = statii.get(i).getUser(); if (u != null) { ContentValues args = new ContentValues(); args.put(DataFramework.KEY_ID, "" + nextId); args.put("type_id", TweetTopicsUtils.TWEET_TYPE_TIMELINE); args.put("user_tt_id", "" + request.getUserId()); if (u.getProfileImageURL() != null) { args.put("url_avatar", u.getProfileImageURL().toString()); } else { args.put("url_avatar", ""); } args.put("username", u.getScreenName()); args.put("fullname", u.getName()); args.put("user_id", "" + u.getId()); args.put("tweet_id", Utils.fillZeros("" + statii.get(i).getId())); args.put("source", statii.get(i).getSource()); args.put("to_username", statii.get(i).getInReplyToScreenName()); args.put("to_user_id", "" + statii.get(i).getInReplyToUserId()); args.put("date", String.valueOf(statii.get(i).getCreatedAt().getTime())); if (statii.get(i).getRetweetedStatus() != null) { args.put("is_retweet", 1); args.put("retweet_url_avatar", statii.get(i).getRetweetedStatus().getUser() .getProfileImageURL().toString()); args.put("retweet_username", statii.get(i).getRetweetedStatus().getUser().getScreenName()); args.put("retweet_source", statii.get(i).getRetweetedStatus().getSource()); String t = Utils.getTwitLoger(statii.get(i).getRetweetedStatus()); if (t.equals("")) { args.put("text", statii.get(i).getRetweetedStatus().getText()); args.put("text_urls", Utils.getTextURLs(statii.get(i).getRetweetedStatus())); } else { args.put("text", t); } args.put("is_favorite", 0); } else { String t = Utils.getTwitLoger(statii.get(i)); if (t.equals("")) { args.put("text", statii.get(i).getText()); args.put("text_urls", Utils.getTextURLs(statii.get(i))); } else { args.put("text", t); } if (statii.get(i).isFavorited()) { args.put("is_favorite", 1); } } if (statii.get(i).getGeoLocation() != null) { args.put("latitude", statii.get(i).getGeoLocation().getLatitude()); args.put("longitude", statii.get(i).getGeoLocation().getLongitude()); } args.put("reply_tweet_id", statii.get(i).getInReplyToStatusId()); if (breakTimeline && isFirst) args.put("has_more_tweets_down", 1); DataFramework.getInstance().getDB().insert("tweets_user", null, args); nextId++; if (isFirst) isFirst = false; } } } catch (SQLException e) { e.printStackTrace(); } DataFramework.getInstance().close(); } } return response; } catch (TwitterException twitterException) { twitterException.printStackTrace(); ErrorResponse errorResponse = new ErrorResponse(); errorResponse.setError(twitterException, twitterException.getMessage()); return errorResponse; } catch (Exception exception) { exception.printStackTrace(); ErrorResponse errorResponse = new ErrorResponse(); errorResponse.setError(exception, exception.getMessage()); return errorResponse; } } }