单词本设计与实现.doc

实 验 报 告课程名称 移动应用开发_实验项目 单词本实现 实验仪器 _系 别 专 业 班级/学号 学生姓名 实验日期 _成 绩 _ 指导教师 _一、 实验目的1. 了解Android数据存储的基本概念；2. 理解并掌握SQLite数据库的使用方法;3. 进一步熟悉与掌握Fragment使用。4. 进一步熟悉各组件、适配器、菜单、对话框等相关概念和技术等。5. 掌握ContentProvider相关概念和技术。6. 掌握Handler相关概念和技术。二、 实验要求1. 课前预习实验内容，并查找相关资料。2. 按照实验步骤完成各个相关内容。3. 撰写实验报告。a) 实验报告格式必须符合学校要求（例如必须采用学校规定的实验封面）；b) 写出实验详细步骤，包括主要采用的技术方案、相关分析和核心代码。注意：不要简单地近包括截屏和代码，完整代码可以作为附录放在实验报告结尾；c) 总结实验中遇到的问题、分析和解决方法。d) 写出心得体会与收获等。三、 实验内容1. 文件构成：1) Java文件：对应功能：2) 资源文件包括：Asset下的本地词库文件背景定义文件各个Activity和Fragment的Layout对话框界面各个List的Item定义不同的菜单文件数组、边界值、颜色值等2. 功能实现分析：主界面：侧滑：主界面采用三个Fragment利用FragmentManager进行切换管理，默认的单词本Fragment是一个经过扩展的RecyclerView，可以实现左滑删除编辑，并且通过对Adapter的修改可以实现隐藏解释达到背单词的效果，也可以通过对数据加载的管理实现按字母或者按新旧排序。搜索Fragment：在App第一次进入时会对本地的txt进行加载，并放到Sqlite数据库中，在获取搜索的关键字后对数据库进行搜索并返回给ListView，点击ListViewde的item后根据单词链接有道API进行查询，并返回其读音和解释，点击添加则可以添加到单词列表。翻译Fragment：翻译功能利用有道Api提供的翻译接口进行翻译，可以实现中文和任意语言的互相转化。新闻名言打开今日一句和BBC新闻今日一句和BBC新闻两个都是获取Json解析得到，并放入对应的数据中。3. 核心代码：1) 修改对话框：private void InsertDialog() final TableLayout tableLayout = (TableLayout) getActivity().getLayoutInflater().inflate(R.layout.insert, null); new AlertDialog.Builder(context) .setTitle(新增单词)/标题 .setView(tableLayout)/设置视图 /确定按钮及其动作 .setPositiveButton(确定, new DialogInterface.OnClickListener() Override public void onClick(DialogInterface dialogInterface, int i) String strWord = (EditText) tableLayout.findViewById(R.id.txtWord).getText().toString(); String strMeaning = (EditText) tableLayout.findViewById(R.id.txtMeaning).getText().toString(); /既可以使用Sql语句插入，也可以使用使用insert方法插入 operate.Insert(strWord, strMeaning); refreshList(); ) /取消按钮及其动作 .setNegativeButton(取消, new DialogInterface.OnClickListener() Override public void onClick(DialogInterface dialogInterface, int i) ) .create()/创建对话框 .show();/显示对话框2) Frgament切换：private void setSelect(int i) clearImageView(); manager = getSupportFragmentManager(); transaction = manager.beginTransaction(); hideFragment(transaction); switch (i) case 0: System.out.println(search pressed); search.setImageResource(R.mipmap.search_button_pressed); if(search_fragment = null) search_fragment = new SearchWord(); transaction.add(R.id.fragment_ui, search_fragment); else transaction.show(search_fragment); break; case 1: System.out.println(list pressed); main.setImageResource(R.mipmap.list_button_pressed); if(main_fragment = null) main_fragment = new WordList(); transaction.add(R.id.fragment_ui, main_fragment); else transaction.show(main_fragment); break; case 2: System.out.println(book pressed); settings.setImageResource(R.mipmap.book_pressed); if(setting_fragment = null) setting_fragment = new TranslateFragment(); transaction.add(R.id.fragment_ui, setting_fragment); else transaction.show(setting_fragment); break; default: break; mit();private void hideFragment(FragmentTransaction transaction2) / TODO Auto-generated method stub if(search_fragment != null) transaction2.hide(search_fragment); if(main_fragment != null) transaction2.hide(main_fragment); if(setting_fragment != null) transaction2.hide(setting_fragment); 3) JSON解析：JSONObject object = new JSONObject(String.valueOf(jsonText);JSONArray rootArray = (JSONArray) object.get(data);for(int i = 0; i 7; i+) News news = new News(); JSONObject now = rootArray.getJSONObject(i); news.setTime(now.getString(publishDateStr); news.setContent(now.getString(content); news.setUrl(now.getString(url); news.setTitle(now.getString(title); if(now.getString(imageUrls) != null) JSONArray picarray = now.getJSONArray(imageUrls); List piclist = new ArrayList(); for (int j = 0; j 1; j+) String pic = (String) picarray.get(j); String b = http:/ichef.bbci.co.uk/news/500/; pic = b + pic.substring(50, pic.length(); piclist.add(pic); news.setPic_s(String) picarray.get(0); news.setPics_url(piclist); System.out.println(第+i+条新闻: +news.getTitle(); list.add(news);4) 获取JSON字符串：Thread thread = new Thread(new Runnable() Override public void run() BufferedReader reader = null; StringBuffer sbf = new StringBuffer(); try SSLContext context = SSLContext.getInstance(SSL); TrustManager trustManager = new myX509TrustManager(); context.init(null, trustManager, new SecureRandom(); SSLSocketFactory ssf = context.getSocketFactory(); URL url = new URL(String.valueOf(urlstring); HttpsURLConnection connection = (HttpsURLConnection) url.openConnection(); connection.setHostnameVerifier(new TrustAnyHostNameVerifier(); connection.setSSLSocketFactory(ssf); connection.setRequestMethod(GET); connection.connect(); InputStream is = connection.getInputStream(); reader = new BufferedReader(new InputStreamReader(is, UTF-8); String strRead = null; while (strRead = reader.readLine() != null) sbf.append(strRead); sbf.append(rn); reader.close(); result = sbf.toString(); catch (Exception e) e.printStackTrace(); );thread.start();/等待上述线程完成执行后再返回jsonText。try Thread.sleep(1000); catch (InterruptedException e) e.printStackTrace();5) Worlist的侧滑功能private SwipeMenuCreator swipeMenuCreator = new SwipeMenuCreator() Override public void onCreateMenu(SwipeMenu swipeLeftMenu, SwipeMenu swipeRightMenu, int viewType) int width = getResources().getDimensionPixelSize(R.dimen.dp_70); / 1. MATCH_PARENT 自适应高度，保持和Item一样高; / 2. 指定具体的高，比如80; / 3. WRAP_CONTENT，自身高度，不推荐; int height = ViewGroup.LayoutParams.MATCH_PARENT; / 根据ViewType来决定哪一个item该如何添加菜单。 / 这里模拟业务，实际开发根据自己的业务计算。 if (viewType % 3 = 0) SwipeMenuItem deleteItem = new SwipeMenuItem(context) .setBackground(R.drawable.selector_red) .setText(删除) .setTextColor(Color.WHITE) .setWidth(width) .setHeight(height); swipeRightMenu.addMenuItem(deleteItem);/ 添加菜单到右侧。 SwipeMenuItem addItem = new SwipeMenuItem(context) .setBackground(R.drawable.selector_green) .setText(编辑) .setTextColor(Color.WHITE) .setWidth(width) .setHeight(height); swipeRightMenu.addMenuItem(addItem); / 添加菜单到右侧。 ;/* * RecyclerView的Item的Menu点击监听。 */private SwipeMenuItemClickListener mMenuItemClickListener = new SwipeMenuItemClickListener() Override public void onItemClick(SwipeMenuBridge menuBridge) menuBridge.closeMenu(); int direction = menuBridge.getDirection(); / 左侧还是右侧菜单。 int adapterPosition = menuBridge.getAdapterPosition(); / RecyclerView的Item的position。 int menuPosition = menuBridge.getPosition(); / 菜单在RecyclerView的Item中的Position。 if (direction = SwipeMenuRecyclerView.RIGHT_DIRECTION) /Toast.makeText(MainActivity.this, list第 + adapterPosition + ; 右侧菜单第 + menuPosition, Toast.LENGTH_SHORT).show(); if(menuPosition = 1) System.out.println(xiugai); Toast.makeText(context, 修改, Toast.LENGTH_SHORT).show(); UpdatetDialog(String.valueOf(list.get(adapterPosition).getId(),list.get(adapterPosition).getWord_name(), list.get(adapterPosition).getWord_meaning(); /refreshList(); else if(menuPosition = 0) System.out.println(shanchu); Toast.makeText(context, 删除, Toast.LENGTH_SHORT).show(); operate.DeleteUseSql(String.valueOf(list.get(adapterPosition).getId(); refreshList(); ;6) 搜索中有道Api的调用：private void query(String query) Language langFrom = LanguageUtils.getLangByName(英文); Language langTo = LanguageUtils.getLangByName(中文); TranslateParameters tps = new TranslateParameters.Builder() .source(wordtest).from(langFrom).to(langTo).timeout(3000).build();/ appkey可以省略 translator = Translator.getInstance(tps); /showLoadingView(正在查询); System.out.println(query +query); translator.lookup(query, new TranslateListener() Override public void onResult(final Translate result, String input) System.out.println(Result +result.getQuery(); List explains = result.getWebExplains(); StringBuilder sb = new StringBuilder(); sb.append(网络释义：); sb.append(n); if (explains != null) for (WebExplain s : explains) sb.append(s.getKey().append(listStr(s.getMeans().append(n); System.out.println(resu+sb); word_meaning.setText(sb); word_voice.setVisibility(View.VISIBLE); add_word.setVisibility(View.VISIBLE); word_voice_text.setText(result.getUkPhonetic(); add_word.setOnClickListener(new View.OnClickListener() Override public void onClick(View v) operate.Insert(word_name.getText().toString(),word_meaning_dict.getText().toString(); Toast.makeText(context, 添加：+word_name.getText().toString(),Toast.LENGTH_SHORT); ); word_voice.setOnClickListener(new View.OnClickListener() Override public void onClick(View v) MediaPlayer mp = new MediaPlayer(); try createVoice(); System.out.println(loading.); while (!isfilefinish) System.out.print(.); mp.setDataSource(/sdcard/audio.mp3); mediaPlayer = mp; mediaPlayer.prepare(); mediaPlayer.start(); isfilefinish = false; mediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() Override public void onCompletion(MediaPlayer mediaPlayer) mediaPlayer.release(); System.out.println(DeleteVoice(); ); catch (Exception e) System.out.println(e); ); Override public void onError(TranslateErrorCode error) Toast.makeText(context,查询错误: + ().toString(),Toast.LENGTH_SHORT); );7) 初始单词数据内容：public void create_word() throws Exception SQLiteDatabase db = mDbHelper.getWritableDatabase(); InputStreamReader in = new InputStreamReader(context.getResources().getAssets().open(test.txt); /FileInputStream in = new FileInputStream(test.txt); /StringBuffer buffer = new StringBuffer(); Cursor c = db.rawQuery(select * from word_Dict, null); if(c.getCount() != 0) return; String line; / 用来保存每行读取的内容 BufferedReader bufferreader = new BufferedReader(in); line = bufferreader.readLine()