单词本设计与实现

1、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（

2、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，

3、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

4、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

5、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.txtMea

6、ning).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)

7、 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(searc

8、h_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

9、= 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

10、.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) tran

11、saction2.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 = r

12、ootArray.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

13、.getJSONArray("imageUrls"); List<String> piclist = new ArrayList<String>(); 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(Str

14、ing) 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

15、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 = (HttpsURLConne

16、ction) url.openConnection(); connection.setHostnameVerifier(new TrustAnyHostNameVerifier(); connection.setSSLSocketFactory(ssf); connection.setRequestMethod("GET"); connection.connect(); InputStream is = connection.getInputStream(); reader = new BufferedReader(new InputStreamReader(is, &qu

17、ot;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 (InterruptedEx

18、ception 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

19、，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&qu

20、ot;) .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);

21、 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.getDirecti

22、on(); / 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" + adapterP

23、osition + " 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_n

24、ame(), 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Ap

25、i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).buil

26、d();/ 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 "+res

27、ult.getQuery(); List<WebExplain> 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"); Syste

28、m.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_

29、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 creat

30、eVoice(); 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.OnComple

31、tionListener() 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(

32、),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(); / 读取