课程设计报告模版.doc

湘南学院课程设计报告课程名称： 嵌入式系统 设计题目： Android 客户端开发 专业班级： 网络工程1班 学生姓名： 欧阳亚平 学生学号： 201114160114 指导老师： 2013年 月 日目 录1概述11.1背景11.2设计要求21.3开发环境31.4关键技术52概要设计82.1软件结构82.2各功能模块设计103详细设计与实现13 3.1界面说明16 3.2程序流程15 3.3关键代码154测试分析184.1测试方法184.2测试用例194.3测试结果195小结19参考文献 24附录（备选）26嵌入式 课程设计报告1 概述通过API接口服务器返回json数据。再将返回来的json数据时行解析，让其显示在手机上。 1.1背景随着手机和互联网的使用越来越普遍，通过手机浏览网页越来来方便，但是如果用手机浏览电脑版网页就会使得用户体验很差，因为手机手频目太小。这样就需要将电脑版网页转化成手机版网页。1.2设计要求 通过API接口访问服务器返回json数据进行解析，得到需要显示手机上的图片或文字。1.3开发环境eclipse插件ADT;1.4关键技术将如下json数据进行解析：2概要设计2.1、软件结构1. 显示网页主界面2. 登入显示已购买商品2.2、各功能模块设计1. 显示网页主界面：2. 登入显示已购买商品3详细设计与实现3.1、界面说明利用android各种控件来布局界面:如TextView,Button,ListView等;3.2、程序流程先调用api接口：URL url=new URL(urls);HttpURLConnection conn=(HttpURLConnection)url.openConnection();String result=;int responseCode = conn.getResponseCode();if (responseCode = HttpURLConnection.HTTP_OK) InputStream is = conn.getInputStream();byte data = new byte1024;int len = 0;ByteArrayOutputStream out = new ByteArrayOutputStream();while (len = is.read(data) != -1) out.write(data, 0, len);返回json数据，再对此数据进行处理：for (int i = offset; i totalnumber; +i) JSONObject obj = data.getJSONObject(i);JSONObject partner = obj.getJSONObject(partner);Map map = new HashMap();map.put(contact, partner.get(contact).toString();map.put(title, obj.get(title).toString();map.put(image, obj.get(image).toString();map.put(team_price, obj.get(team_price).toString();map.put(market_price, obj.get(market_price).toString();map.put(now_number, obj.get(now_number).toString() + 人);allvalues.add(map);最后再显示在手机的界面：ListView.setAdapter(new Adapter);3.3、关键代码1. public class MainActivity extends Activity private ListView list = null;private TextView footView = null;private Handler handler = null;private ProductListAdapter adapter = null;private ListMap allvalues = new ArrayListMap();private Spinner catalog = null;private Button orderby = null;private ArrayAdapter adapterCatalog = null;private File imagecache;Overrideprotected void onCreate(Bundle savedInstanceState) super.onCreate(savedInstanceState);Groable.init(this);setContentView(R.layout.activity_main);list = (ListView) findViewById(R.id.list);catalog = (Spinner) findViewById(R.id.catalog);orderby = (Button) findViewById(R.id.order_by);adapterCatalog = ArrayAdapter.createFromResource(this, R.array.catalog,android.R.layout.simple_spinner_item);adapterCatalog.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);catalog.setAdapter(adapterCatalog);catalog.setPrompt(请选择类别);super.registerForContextMenu(this.orderby);footView = new TextView(this);footView.setTextSize(20);footView.setTextColor(Color.WHITE);footView.setGravity(Gravity.CENTER);footView.setText(正在查询，请稍候.);list.addFooterView(footView);imagecache = new File(/sdcard);if (!imagecache.exists() imagecache.mkdirs();handler = new Handler() Overridepublic void handleMessage(Message msg) if (msg.what = 0) list.setAdapter(adapter); else ;final ProgressDialog pro = new ProgressDialog(MainActivity.this);pro.setTitle(提示);pro.setMessage(正在加载数据，请稍后.);pro.show();Thread t = new Thread() Overridepublic void run() try loadData();adapter = new ProductListAdapter(allvalues,MainActivity.this, imagecache); catch (Exception e) e.printStackTrace();handler.sendEmptyMessage(0);pro.dismiss();t.start();Overridepublic void onCreateContextMenu(ContextMenu menu, View v,ContextMenuInfo menuInfo) super.onCreateContextMenu(menu, v, menuInfo);menu.setHeaderTitle(排序);super.getMenuInflater().inflate(R.menu.order_by, menu);public void loadData() throws Exception String results = Groable.getUrlResult(Groable.BASE_URL+ Tuan/goodsList);JSONObject root = new JSONObject(results);JSONObject result = root.getJSONObject(result);JSONArray data = result.getJSONArray(data);System.out.println(data.toString();for (int i = 0; i data.length(); +i) JSONObject obj = data.getJSONObject(i);JSONObject partner = obj.getJSONObject(partner);Map map = new HashMap();map.put(contact, partner.get(contact).toString();map.put(title, obj.get(title).toString();map.put(image, obj.get(image).toString();map.put(team_price, obj.get(team_price).toString();map.put(market_price, obj.get(market_price).toString();map.put(now_number, obj.get(now_number).toString() + 人);allvalues.add(map);Overridepublic boolean onCreateOptionsMenu(Menu menu) menu.add(menu.NONE, menu.FIRST + 1, 1, 团购).setIcon(android.R.drawable.ic_menu_edit);menu.add(menu.NONE, menu.FIRST + 2, 2, 周边).setIcon(android.R.drawable.ic_menu_view);menu.add(menu.NONE, menu.FIRST + 3, 3, 团购券).setIcon(android.R.drawable.ic_menu_save);menu.add(menu.NONE, menu.FIRST + 4, 4, 团购).setIcon(android.R.drawable.ic_menu_more);return true;Overridepublic boolean onOptionsItemSelected(MenuItem item) switch (item.getItemId() case Menu.FIRST + 3:Intent it = new Intent(MainActivity.this, Login.class);MainActivity.this.startActivity(it);break;return false;Overridepublic void onOptionsMenuClosed(Menu menu) super.onOptionsMenuClosed(menu);Overridepublic boolean onPrepareOptionsMenu(Menu menu) return true;Overrideprotected void onDestroy() for (File file : imagecache.listFiles() file.delete();super.onDestroy();public class ProductListAdapter extends BaseAdapter private ListMap allvalues;private Context ctx;private LayoutInflater inflater;private File imagecache;public ProductListAdapter(ListMap allvalues,Context context, File imagecache) this.allvalues = allvalues;this.ctx = context;this.imagecache = imagecache;Overridepublic int getCount() return allvalues.size();Overridepublic Object getItem(int position) return allvalues.get(position);Overridepublic long getItemId(int position) return position;Overridepublic View getView(int position, View convertView, ViewGroup parent) TextView contact = null;TextView title = null;TextView price = null;TextView marketprice = null;TextView now_number = null;ImageView image = null;if (convertView = null) inflater = (LayoutInflater) ctx.getSystemService(ctx.LAYOUT_INFLATER_SERVICE);convertView = inflater.inflate(R.duct_list_line, null);contact = (TextView) convertView.findViewById(R.duct_contact);title = (TextView) convertView.findViewById(R.duct_title);price = (TextView) convertView.findViewById(R.id.team_price);marketprice = (TextView) convertView.findViewById(R.id.market_price);now_number = (TextView) convertView.findViewById(R.id.now_number);image = (ImageView) convertView.findViewById(R.ductimage);convertView.setTag(new DataWrap(image, title, price, marketprice,contact, now_number); else DataWrap datawrap = (DataWrap) convertView.getTag();contact = datawrap.contact;title = datawrap.title;price = datawrap.price;now_number = datawrap.now_number;marketprice = datawrap.marketprice;image = datawrap.image;Map map = allvalues.get(position);contact.getLayoutParams().height = Groable.SCREEN_HEIGHT / 20;title.getLayoutParams().height = Groable.SCREEN_HEIGHT / 10;price.getLayoutParams().height = Groable.SCREEN_HEIGHT / 20;image.getLayoutParams().height = Groable.SCREEN_HEIGHT / 5;title.setText(map.get(title).toString();price.setText(￥ + map.get(team_price).toString();marketprice.setText(/ + map.get(market_price).toString();now_number.setText(map.get(now_number).toString();contact.setText(map.get(contact).toString();String imageurl = (String) map.get(image);DownloadImageUtils.setImageUrl(Groable.UPLOAD_URL + imageurl, image,imageurl, imagecache);return convertView;private final class DataWrap ImageView image;TextView title;TextView price;TextView marketprice;TextView contact;TextView now_number;public DataWrap(ImageView image, TextView title, TextView price,TextView marketprice, TextView contact, TextView now_number) this.contact = contact;this.image = image;this.marketprice = marketprice;this.now_number = now_number;this.price = price;this.title = title;public class DownloadImageUtils public static void setImageUrl(final String url, final ImageView img,final String imgurl, final File imagecache) final Handler handler = new Handler() Overridepublic void handleMessage(Message msg) Uri uri = (Uri) msg.obj;if (uri != null & img != null) img.setImageURI(uri);System.out.println();Thread t = new Thread() Overridepublic void run() Message msg = new Message();String fileName = new MD5Code().getMD5ofStr(imgurl)+ imgurl.substring(imgurl.lastIndexOf(.);File f = new File(imagecache, fileName);InputStream is = null;OutputStream os = null;/ OutputStream os = null;try if (f.exists() msg.what = 1;msg.obj = Uri.fromFile(f); else is = Groable.getUrlInputStream(url);os = new FileOutputStream(f);byte data = new byte1024;int len = 0;while (len = is.read(data) != -1) os.write(data, 0, len);Uri uri= Uri.fromFile(f);msg.what = 1;msg.obj =uri;handler.sendMessage(msg); catch (Exception e) e.printStackTrace(); finally try if (is != null & os != null) is.close();os.close(); catch (Exception e) e.printStackTrace();t.start(); public class Groable public static String BASE_URL=*; public static String WELCOME_URL=BASE_URL+?s=Tuan/goodsList;public static int SCREEN_WIDTH;public static int SCREEN_HEIGHT;public static String CACHE_IMAGE_DIR;public static String UPLOAD_URL=*;public static File imgcache=null;public static void init(Activity a)SCREEN_HEIGHT=a.getWindowManager().getDefaultDisplay().getHeight();SCREEN_WIDTH=a.getWindowManager().getDefaultDisplay().getWidth();System.out.println(Environment.getExternalStorageState()+yaping);CACHE_IMAGE_DIR=a.getFilesDir().getPath() + /imagecache; File imgcach