Java tutorial
/* * The MIT License (MIT) * * Copyright (c) 2014-2015 Umeng, Inc * * 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 com.umeng.comm.ui.imagepicker.util; import android.content.Context; import android.content.SharedPreferences; import android.content.SharedPreferences.Editor; import android.text.TextUtils; import com.umeng.comm.core.beans.CommUser; import com.umeng.comm.core.beans.FeedItem; import com.umeng.comm.core.beans.ImageItem; import com.umeng.comm.core.beans.Topic; import com.umeng.comm.core.constants.Constants; import com.umeng.comm.core.utils.SharePrefUtils; import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject; /** * feed,??feed????????. * */ public class FeedMemento { /** * * * @param feedItem * @return */ public static void createMemento(Context context, FeedItem feedItem) { savePostData(context, feedItem); } /** * ???? */ private static void savePostData(Context context, FeedItem feedItem) { JSONObject feedJsonObject = new JSONObject(); try { feedJsonObject.put("content", feedItem.text); feedJsonObject.put("title", feedItem.title); feedJsonObject.put("location_addr", feedItem.locationAddr); // JSONArray imageJsonArray = new JSONArray(); for (ImageItem item : feedItem.imageUrls) { imageJsonArray.put(item.originImageUrl); } feedJsonObject.put("images", imageJsonArray); // ? JSONArray friendsJsonArray = new JSONArray(); for (CommUser friend : feedItem.atFriends) { // JSONObject friendObject = new JSONObject(); friendObject.put("id", friend.id); friendObject.put("name", friend.name); friendsJsonArray.put(friendObject); } feedJsonObject.put("at_friends", friendsJsonArray); // ? JSONArray topicsJsonArray = new JSONArray(); for (Topic topic : feedItem.topics) { JSONObject topicObject = new JSONObject(); topicObject.put("id", topic.id); topicObject.put("name", topic.name); // topicsJsonArray.put(topicObject); } feedJsonObject.put("topics", topicsJsonArray); // Editor sharePrefEditor = SharePrefUtils.getSharePrefEdit(context, Constants.FEED_SHARE_PREF).edit(); sharePrefEditor.putString(Constants.FEED_SHARE_PREF_KEY, feedJsonObject.toString()).commit(); } catch (JSONException e) { e.printStackTrace(); } } /** * @param context * @return */ public static FeedItem restoreMemento(Context context) { FeedItem feedItem = new FeedItem(); SharedPreferences sharedPreferences = context.getSharedPreferences(Constants.FEED_SHARE_PREF, Context.MODE_PRIVATE); String saveFeedStr = sharedPreferences.getString(Constants.FEED_SHARE_PREF_KEY, ""); if (!TextUtils.isEmpty(saveFeedStr)) { try { JSONObject feedJsonObject = new JSONObject(saveFeedStr); feedItem.text = feedJsonObject.optString("content"); feedItem.title = feedJsonObject.optString("title"); feedItem.locationAddr = feedJsonObject.optString("location_addr"); // parseImages(feedItem, feedJsonObject); // ? parseTopics(feedItem, feedJsonObject); // ? parseFriends(feedItem, feedJsonObject); } catch (JSONException e) { e.printStackTrace(); } } // end if return feedItem; } /** * @param feedItem * @param feedJsonObject * @throws JSONException */ private static void parseImages(FeedItem feedItem, JSONObject feedJsonObject) throws JSONException { JSONArray imageArray = feedJsonObject.optJSONArray("images"); if (imageArray != null && imageArray.length() > 0) { int length = imageArray.length(); for (int i = 0; i < length; i++) { feedItem.imageUrls.add(new ImageItem("", "", imageArray.getString(i))); } } } // /** * @param feedItem * @param feedJsonObject */ private static void parseTopics(FeedItem feedItem, JSONObject feedJsonObject) throws JSONException { JSONArray topicsArray = feedJsonObject.optJSONArray("topics"); if (topicsArray != null && topicsArray.length() > 0) { int length = topicsArray.length(); for (int i = 0; i < length; i++) { JSONObject topicJsonObject = topicsArray.getJSONObject(i); Topic topic = new Topic(); topic.id = topicJsonObject.optString("id"); topic.name = topicJsonObject.optString("name"); feedItem.topics.add(topic); } } } // /** * @param feedItem * @param feedJsonObject */ private static void parseFriends(FeedItem feedItem, JSONObject feedJsonObject) throws JSONException { JSONArray friendArray = feedJsonObject.optJSONArray("at_friends"); if (friendArray != null && friendArray.length() > 0) { int length = friendArray.length(); for (int i = 0; i < length; i++) { JSONObject friendJsonObject = friendArray.getJSONObject(i); CommUser friend = new CommUser(); friend.id = friendJsonObject.optString("id"); friend.name = friendJsonObject.optString("name"); feedItem.atFriends.add(friend); } } } // /** * ? * * @param context */ public static void clear(Context context) { Editor editor = SharePrefUtils.getSharePrefEdit(context, Constants.FEED_SHARE_PREF).edit(); if (editor != null) { editor.remove(Constants.FEED_SHARE_PREF).commit(); } } }