Java tutorial
/* * The MIT License * * Copyright (c) 2016 Andreas Schattney * * 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 hochschuledarmstadt.photostream_tools; import com.google.gson.Gson; import org.json.JSONException; import org.json.JSONObject; import java.io.IOException; import hochschuledarmstadt.photostream_tools.model.Comment; import hochschuledarmstadt.photostream_tools.model.HttpError; class StoreCommentAsyncTask extends BaseAsyncTask<Void, Void, Comment> { private static final String UTF_8 = "UTF-8"; private static final String TAG = StoreCommentAsyncTask.class.getName(); private static final String KEY_MESSAGE = "message"; private final HttpPostExecutor executor; private final OnCommentSentListener callback; private final int photoId; private final String comment; public StoreCommentAsyncTask(HttpPostExecutor executor, int photoId, String comment, OnCommentSentListener callback) { super(); this.executor = executor; this.photoId = photoId; this.comment = comment; this.callback = callback; } @Override protected Comment doInBackground(Void... params) { try { return sendComment(); } catch (IOException e) { Logger.log(TAG, LogLevel.ERROR, e.toString()); postError(new HttpError(-1, e.toString())); } catch (HttpPhotoStreamException e) { Logger.log(TAG, LogLevel.ERROR, e.toString()); postError(e.getHttpError()); } return null; } private Comment sendComment() throws IOException, HttpPhotoStreamException { try { JSONObject jsonObject = new JSONObject(); jsonObject.put(KEY_MESSAGE, comment); String s = jsonObject.toString(); HttpResponse httpResponse = executor.execute(s); return new Gson().fromJson(httpResponse.getResult(), Comment.class); } catch (JSONException e) { Logger.log(TAG, LogLevel.ERROR, e.toString()); } throw new IOException("JSONException"); } @Override protected void onPostExecute(Comment comment) { super.onPostExecute(comment); if (comment != null) callback.onCommentSent(comment); } @Override protected void sendError(HttpError httpError) { callback.onSendCommentFailed(httpError); } interface OnCommentSentListener { void onCommentSent(Comment comment); void onSendCommentFailed(HttpError httpError); } }