Java tutorial
/* * The MIT License (MIT) * * Copyright (c) 2012-2014 lacolaco.net * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ package net.lacolaco.smileessence.twitter.task; import android.app.Activity; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.os.Environment; import android.text.TextUtils; import net.lacolaco.smileessence.R; import net.lacolaco.smileessence.data.StatusCache; import net.lacolaco.smileessence.logging.Logger; import net.lacolaco.smileessence.notification.NotificationType; import net.lacolaco.smileessence.notification.Notificator; import net.lacolaco.smileessence.preference.UserPreferenceHelper; import net.lacolaco.smileessence.twitter.TwitterApi; import twitter4j.Status; import twitter4j.StatusUpdate; import twitter4j.Twitter; import twitter4j.TwitterException; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; public class TweetTask extends TwitterTask<Status> { // ------------------------------ FIELDS ------------------------------ private final StatusUpdate update; private final String mediaPath; private final Activity activity; private String tempFilePath; // --------------------------- CONSTRUCTORS --------------------------- public TweetTask(Twitter twitter, StatusUpdate update, Activity activity) { this(twitter, update, null, activity); } public TweetTask(Twitter twitter, StatusUpdate update, String mediaPath, Activity activity) { super(twitter); this.update = update; this.mediaPath = mediaPath; this.activity = activity; } // --------------------- GETTER / SETTER METHODS --------------------- public File getMediaFile() { File file = new File(mediaPath); boolean resizeFlag = new UserPreferenceHelper(activity).getValue(R.string.key_setting_resize_post_image, false); if (file.length() >= TwitterApi.MEDIA_SIZE_LIMIT && resizeFlag) { BitmapFactory.Options opt = new BitmapFactory.Options(); opt.inJustDecodeBounds = true; //decoder is not return bitmap but set option BitmapFactory.decodeFile(mediaPath, opt); tempFilePath = Environment.getExternalStorageDirectory() + "/temp.jpg"; File compressedFile = new File(tempFilePath); FileOutputStream fos = null; try { fos = new FileOutputStream(compressedFile); float ratio = (float) file.length() / (float) TwitterApi.MEDIA_SIZE_LIMIT; BitmapFactory.Options resizeOpt = new BitmapFactory.Options(); resizeOpt.inPurgeable = true; resizeOpt.inSampleSize = (int) Math.ceil(ratio); Bitmap bitmap = BitmapFactory.decodeFile(mediaPath, resizeOpt); bitmap.compress(Bitmap.CompressFormat.JPEG, 100, fos); bitmap.recycle(); return compressedFile; } catch (Exception e) { e.printStackTrace(); Logger.error(e); } finally { try { fos.close(); } catch (IOException e) { e.printStackTrace(); Logger.error(e); } } } return file; } // ------------------------ OVERRIDE METHODS ------------------------ @Override protected void onPostExecute(twitter4j.Status status) { if (status != null) { StatusCache.getInstance().put(status); new Notificator(activity, R.string.notice_tweet_succeeded).publish(); } else { new Notificator(activity, R.string.notice_tweet_failed, NotificationType.ALERT).publish(); } } @Override protected twitter4j.Status doInBackground(Void... params) { try { if (TextUtils.isEmpty(mediaPath)) { return twitter.tweets().updateStatus(update); } else { File mediaFile = getMediaFile(); if (mediaFile.exists()) { update.setMedia(mediaFile); } twitter4j.Status status = twitter.tweets().updateStatus(update); if (tempFilePath != null) { new File(tempFilePath).delete(); } return status; } } catch (TwitterException e) { e.printStackTrace(); Logger.error(e.toString()); return null; } } }