实践--课程表（ViewPager实现）
来源：互联网 发布：js验证日期格式 编辑：程序博客网 时间：2024/06/06 04:45
效果图
- 数据的获取参见下面这两篇博客
Java登录方正教务系统
Java登录方正教务系统获取课表
登录界面设计
- 登录界面就是简单UI控件的应用，同时配合自定义其显示的样式，实现一些简单的视觉效果
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="match_parent" android:background="@color/colorbackground_Lgoin" android:layout_height="match_parent"> <ImageView android:layout_marginTop="80dp" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center_horizontal" android:src="@mipmap/ic_pic"/> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginLeft="30dp" android:layout_marginRight="30dp" android:layout_marginTop="50dp" android:orientation="horizontal"> <ImageView android:layout_width="30dp" android:layout_height="30dp" android:layout_marginRight="5dp" android:layout_gravity="center_vertical" android:src="@mipmap/account_pic"/> <EditText android:layout_width="match_parent" android:layout_height="wrap_content" android:hint="学号" android:text="201310503" android:id="@+id/editText_id" android:paddingLeft="20dp" /> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginLeft="30dp" android:layout_marginRight="30dp" android:layout_marginTop="5dp" android:orientation="horizontal"> <ImageView android:layout_width="30dp" android:layout_height="30dp" android:layout_marginRight="5dp" android:layout_gravity="center_vertical" android:src="@mipmap/password_pic"/> <EditText android:layout_width="match_parent" android:layout_height="wrap_content" android:hint="密码" android:inputType="textPassword" android:text="wz446774318" android:paddingLeft="20dp" android:id="@+id/editText_password" /> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginLeft="30dp" android:layout_marginRight="30dp" android:layout_marginTop="5dp" android:orientation="horizontal"> <ImageView android:layout_width="30dp" android:layout_height="30dp" android:layout_marginRight="5dp" android:layout_marginTop="5dp" android:src="@mipmap/check_pic"/> <EditText android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/editText_checkcode" android:paddingLeft="20dp" android:hint="验证码" android:layout_weight="1"/> <ImageView android:layout_width="80dp" android:layout_height="40dp" android:id="@+id/imageView_checkcode" /> </LinearLayout> <Button android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="20dp" android:layout_marginLeft="40dp" android:layout_marginRight="40dp" android:text="登录" android:background="@drawable/selecter_login_button" android:id="@+id/button_login" android:layout_gravity="right" /> <RelativeLayout android:layout_width="match_parent" android:layout_height="match_parent"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="注意事项" android:layout_margin="10dp" android:id="@+id/textView_care" android:layout_alignParentBottom="true" android:layout_alignParentLeft="true" /> </RelativeLayout></LinearLayout>android的登陆操作
- 由于在安卓中不允许在主线程中访问网络和其他一些费时的操作，故在我们点击登录按钮的时候，我们需要开启新的线程去进行数据的提交，和返回数据的获取，对返回数据的处理，需要使用到消息传递机制Handler才能传递到主线程中。
private void loginThread() { new Thread(new Runnable() { @Override public void run() { Looper.prepare(); try { // 拼接请求字符串 String str = "__VIEWSTATE=" + URLEncoder.encode(loginData.getViewState(), "gb2312") + "&txtUserName=" + loginData.getId() + "&TextBox2=" + loginData.getPassword()+ "&txtSecretCode=" + loginData.getCheckCode() + "&RadioButtonList1=" + URLEncoder.encode("学生", "gb2312") + "&Button1=&lbLanguage=&hidPdrs=&hidsc="; ; System.out.println("参数列表:" + str); // 登录提交的网址 URL url = new URL("http://10.5.3.236/default2.aspx"); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); // Post提交 conn.setRequestMethod("POST"); conn.setReadTimeout(5000); conn.setUseCaches(false); // 禁止程序自己跳转到目标网址，必须设置，不然程序会自己响应 // 302返回码，自己请求跳转后的网址，出现Object Had Moved!错误 conn.setInstanceFollowRedirects(false); // 写入cookie conn.setRequestProperty("Cookie", loginData.getCookie()); conn.setDoOutput(true); OutputStream out = conn.getOutputStream(); // 写入参数 out.write(str.getBytes()); out.close(); // 打印返回码 System.out.println("返回码:" + conn.getResponseCode()); // 打印服务器返回的跳转网址 System.out.println("Location :" + conn.getHeaderField("Location")); BufferedReader read = new BufferedReader(new InputStreamReader(conn.getInputStream())); String temp; // 读取页面源码 StringBuffer ab = new StringBuffer(); while ((temp = read.readLine()) != null) { ab.append(temp); } System.out.println(ab); if (conn.getResponseCode() != 302) { new Thread(new GetCheckCode(loginData, myHanler)).start(); Toast.makeText(LoginActivity.this, "用户名或密码错误！！！", Toast.LENGTH_SHORT).show(); Message msg=new Message(); msg.arg1=10086; myHanler.sendMessage(msg); } else { GetNameByUrl.getNameByUrl(conn.getHeaderField("Location"),loginData); Intent intent=new Intent(LoginActivity.this,MainActivity.class); intent.putExtra("loginData",loginData); startActivity(intent); finish(); } } catch (IOException e) { e.printStackTrace(); } Looper.loop(); } }).start(); }- 通过两个工具类实现验证码的获取,获取验证码的代码如下：
public class GetCheckCode implements Runnable{ private LoginData loginData; private Handler myHandler; public GetCheckCode(LoginData loginData, Handler myHandler) { this.loginData = loginData; this.myHandler = myHandler; } @Override public void run() { try { /** * img变量的值为http:http://10.5.3.236/CheckCode.aspx * 也就是上面图片中，验证码的网址，在浏览器中，右键验证码 即可选择复制图片网址 请求 URL: * http://10.5.3.236/CheckCode.aspx */ URL url = new URL("http://10.5.3.236/CheckCode.aspx"); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setRequestMethod("GET"); conn.setReadTimeout(5000); // cookie一同提交(ASP.NET_SessionId=4kusfii0urpbrazkhxvuas45,只需要等号后面的一串数据) conn.setRequestProperty("Cookie", loginData.getCookie()); InputStream in = conn.getInputStream(); loginData.setBitmap_checkcode(BitmapFactory.decodeStream(conn.getInputStream())); System.out.println("读取验证码完毕!"); Message msg=new Message(); msg.obj=loginData; myHandler.sendMessage(msg); } catch (MalformedURLException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } }}- 获取课表的代码如下
public class GetTimeTable implements Runnable { private LoginData loginData; private List<CourseBean> courseList; private Handler myHanler; public GetTimeTable(LoginData loginData,List<CourseBean> courseList,Handler myHanler) { this.loginData = loginData; this.courseList=courseList; this.myHanler=myHanler; } @Override public void run() { System.out.println("读取课表"); String url = null; try { url = "http://10.5.3.236/xskbcx.aspx?xh="+loginData.getId() +"&xm="+URLEncoder.encode(loginData.getName(), "gb2312")+"&gnmkdm=" +loginData.getNeedString(); System.out.println("获取课表的参数: " + url); URL Url; Url = new URL(url); HttpURLConnection conn = (HttpURLConnection) Url.openConnection(); conn.setRequestMethod("GET"); conn.setReadTimeout(2000); conn.setRequestProperty("Cookie", loginData.getCookie()); conn.setRequestProperty("Referer", "http://10.5.3.236/xs_main.aspx?xh="+loginData.getId()); conn.setInstanceFollowRedirects(false); conn.setDoOutput(true); BufferedReader read = new BufferedReader(new InputStreamReader( conn.getInputStream(),"gb2312")); StringBuffer sb = new StringBuffer(); String temp; while ((temp = read.readLine()) != null) { sb.append(temp); } dealTimeTableHtml(sb.toString()); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } catch (ProtocolException e) { e.printStackTrace(); } catch (MalformedURLException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } private void dealTimeTableHtml(String courseHtml) { Pattern pattern1 = Pattern.compile("width=\"7%\">.*?/td>"); Matcher matcher1 = pattern1.matcher(courseHtml); StringBuffer sb = new StringBuffer(); int begin = 0; int end = 0; while (matcher1.find()) { begin = matcher1.start(); end = matcher1.end(); String str = courseHtml.substring(begin + 11, end); sb.append(str); } pattern1 = Pattern.compile("rowspan=\"2\">.*?/td>"); matcher1 = pattern1.matcher(courseHtml); while (matcher1.find()) { begin = matcher1.start(); end = matcher1.end(); String str = courseHtml.substring(begin + 12, end); sb.append(str); } String str=sb.toString().replaceAll(" </td>",""); String[] courseString = str.split("</td>"); for (int i=0;i<courseString.length;i++){ String[] courseDital=courseString[i].split("<br>"); CourseBean courseBean=new CourseBean(courseDital[0],courseDital[1],courseDital[2],courseDital[3],courseDital[4]); courseList.add(courseBean); } Message msg=new Message(); msg.obj=courseList; myHanler.sendMessage(msg); }}课表的解析和展示
- 课表的展示使用的是ViewPager，这是supportV4提供的一个控件，一个ViewPager里面包含了7个页面，在登录成功以后，登录界面会通过intent将解析出来并格式化好的课表信息发送给课表显示页面，然后根据课表信息是那一天的，在添加到不同页面的ListView中去，然后再为listView设置其适配器，自定义其显示的内容的样式即可。
/** * Created by Wang on 2016/3/29. */public class MainActivity extends AppCompatActivity { private ViewPager viewPager; private List<Fragment> pager_list; private LoginData loginData; private List<CourseBean> courseList, courseList1, courseList2, courseList3, courseList4, courseList5; private ListView listView_pager1, listView_pager2, listView_pager3, listView_pager4, listView_pager5; private MyFragment myFragment1, myFragment2, myFragment3, myFragment4, myFragment5; protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); init(); Intent intent = getIntent(); loginData = intent.getParcelableExtra("loginData"); MyFragmentPagerAdapter adapter = new MyFragmentPagerAdapter(getSupportFragmentManager(), pager_list); viewPager.setAdapter(adapter); Toast.makeText(MainActivity.this, "欢迎登陆，" + loginData.getName() + "同学", Toast.LENGTH_SHORT).show(); new Thread(new GetTimeTable(loginData, courseList, myHanler)).start(); viewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() { @Override public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) { switch (position) { case 0: listView_pager1 = myFragment1.getListView(); MyAdapter adapter1 = new MyAdapter(MainActivity.this, R.layout.layout_item_listview, courseList1); listView_pager1.setAdapter(adapter1); break; case 1: listView_pager2 = myFragment2.getListView(); MyAdapter adapter2 = new MyAdapter(MainActivity.this, R.layout.layout_item_listview, courseList2); listView_pager2.setAdapter(adapter2); break; case 2: listView_pager3 = myFragment3.getListView(); MyAdapter adapter3 = new MyAdapter(MainActivity.this, R.layout.layout_item_listview, courseList3); listView_pager3.setAdapter(adapter3); break; case 3: listView_pager4 = myFragment4.getListView(); MyAdapter adapter4 = new MyAdapter(MainActivity.this, R.layout.layout_item_listview, courseList4); listView_pager4.setAdapter(adapter4); break; case 4: listView_pager5 = myFragment5.getListView(); MyAdapter adapter5 = new MyAdapter(MainActivity.this, R.layout.layout_item_listview, courseList5); listView_pager5.setAdapter(adapter5); break; } } @Override public void onPageSelected(int position) { } @Override public void onPageScrollStateChanged(int state) { } }); } private Handler myHanler = new Handler() { public void handleMessage(Message msg) { courseList = (List) msg.obj; for (int i = 0; i < courseList.size(); i++) { CourseBean courseBean = courseList.get(i); if (courseBean.getCourse_week().contains("周一")) { courseList1.add(courseBean); } else if (courseBean.getCourse_week().contains("周二")) { courseList2.add(courseBean); } else if (courseBean.getCourse_week().contains("周三")) { courseList3.add(courseBean); } else if (courseBean.getCourse_week().contains("周四")) { courseList4.add(courseBean); } else if (courseBean.getCourse_week().contains("周五")) { courseList5.add(courseBean); } } listView_pager1 = myFragment1.getListView(); MyAdapter adapter1 = new MyAdapter(MainActivity.this, R.layout.layout_item_listview, courseList1); listView_pager1.setAdapter(adapter1); } }; private void init() { viewPager = (ViewPager) findViewById(R.id.viewPager); pager_list = new ArrayList<>(); myFragment1 = new MyFragment(); myFragment2 = new MyFragment(); myFragment3 = new MyFragment(); myFragment4 = new MyFragment(); myFragment5 = new MyFragment(); pager_list.add(myFragment1); pager_list.add(myFragment2); pager_list.add(myFragment3); pager_list.add(myFragment4); pager_list.add(myFragment5); courseList = new ArrayList<>(); courseList1 = new ArrayList<>(); courseList2 = new ArrayList<>(); courseList3 = new ArrayList<>(); courseList4 = new ArrayList<>(); courseList5 = new ArrayList<>(); } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.menu, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case R.id.login_out: this.finish(); Toast.makeText(MainActivity.this, "用户已注销，请重新登录！！！", Toast.LENGTH_SHORT).show(); Intent intent=new Intent(MainActivity.this,LoginActivity.class); startActivity(intent); break; case R.id.exit: finish(); break; } return true; }}总结
- 由于本人水平有限，描述的也不尽然相近，代码中的诸多漏洞还请谅解，如果对代码存在疑问，可以查看源码并下载，地址：超级课程表（ViewPager实现）
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