1     public void checkUpdate() {
 2         new DownloadWebpageText(this).execute("http://files.cnblogs.com/lijie198871/barcodeClientUpdate.xml");
 3     }
 4 
 5 @SuppressWarnings("rawtypes")
 6     private class DownloadWebpageText extends AsyncTask {
 7         UpdateManager  updateManager = null;
 8         
 9         public DownloadWebpageText(UpdateManager um){
10             this.updateManager = um;
11         }
12         
13         @Override
14         protected Object doInBackground(Object... params) {
15             // TODO Auto-generated method stub
16             try {
17                 return downloadUrl(params[0].toString());
18             } catch (Exception en) {
19                 return en.getMessage();
20             }
21         }
22 
23         @SuppressWarnings("unchecked")
24         @Override
25         protected void onPostExecute(Object result) {
26             // TODO Auto-generated method stub
27             super.onPostExecute(result);
28 
29             this.updateManager.getVersionCode(Integer.parseInt(result.toString()));
30 //            ((TextView) findViewById(R.id.networkResult)).setText(result
31 //                    .toString());
32         }
33 
34         private String downloadUrl(String myurl) throws IOException {
35             InputStream is = null;
36             HttpURLConnection httpConn = null;
37             
38             try {
39                 URL url = new URL(myurl);
40                 httpConn = (HttpURLConnection) url.openConnection();
41                 httpConn.setReadTimeout(10000);
42                 httpConn.setConnectTimeout(15000);
43                 httpConn.setRequestMethod("GET");
44                 httpConn.setDoInput(true);
45 
46                 httpConn.connect();
47                 int resultCode = httpConn.getResponseCode();
48                 if (resultCode == 200) {
49                     is = httpConn.getInputStream();
50 
51                     PraseXmlService pxmlService = new PraseXmlService();
52                     HashMap<String,String> map = pxmlService.praseXml(is);
53                     return map.get("versionCode");
54                 } else {
55                     return "错误代码：" + resultCode;
56                 }
57 
58             } finally {
59                 if (is != null) {
60                     is.close();
61                 }
62                 if (httpConn != null) {
63                     httpConn.disconnect();
64                 }
65             }
66         }
67         
68         private String readIt(InputStream is, int len) throws IOException {
69             Reader reader = new InputStreamReader(is, "UTF-8");
70             char[] charBuffer = new char[len];
71             reader.read(charBuffer);
72 
73             return new String(charBuffer);
74         }
75     }

 1 public class PraseXmlService {
 2     public HashMap<String,String> praseXml(InputStream inStream) throws Exception
 3     {
 4         HashMap<String,String> updateMap = new HashMap<String,String>();
 5         
 6         DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
 7         DocumentBuilder builder = factory.newDocumentBuilder();
 8         Document document = builder.parse(inStream);
 9         Element element = document.getDocumentElement();
10         
11         NodeList nodeList = element.getChildNodes();
12         int nodeCount = nodeList.getLength();
13         if(nodeList!=null && nodeCount>0){
14             for(int i=0;i<nodeCount;i++){
15                 Node node = nodeList.item(i);
16                 if(node.getNodeType() == Node.ELEMENT_NODE){
17                     Element childElement = (Element)node;
18                     if("versionCode".equals(childElement.getNodeName())){
19                         updateMap.put("versionCode", childElement.getFirstChild().getNodeValue());
20                     }else if("versionName".equals(childElement.getNodeName())){
21                         updateMap.put("versionName", childElement.getFirstChild().getNodeValue());
22                     }else if("url".equals(childElement.getNodeName())){
23                         updateMap.put("url", childElement.getFirstChild().getNodeValue());
24                     }
25                 }
26             }
27         }
28         return updateMap;
29     }
30 }

 1 private int getAppVersionCode() {
 2         int appVersionCoode = 0;
 3         PackageManager pm = this.context.getPackageManager();
 4         try {
 5             appVersionCoode = pm.getPackageInfo("com.lijie.client.android", 0).versionCode;
 6         } catch (Exception e) {
 7             e.printStackTrace();
 8         }
 9 
10         return appVersionCoode;
11     }
12 
13     private boolean isUpdate(int newVersionCode) {
14         int appVersionCode = this.getAppVersionCode();
15         
16         if (newVersionCode > appVersionCode) {
17             return true;
18         } else {
19             return false;
20         }
21         
22     }
23 
24     private void getVersionCode(int newVersionCode){
25         if (this.isUpdate(newVersionCode)) {
26             this.showNoticeDialog();
27         } else {
28             Toast.makeText(this.context, "当前已经是最新版本", Toast.LENGTH_LONG).show();
29         }
30     }

  1 private void CreateBarcode()
  2         {
  3             serverIp = GetLocalIP();
  4 
  5             Random random = new Random();
  6             while (true)
  7             {
  8                 int port = random.Next(8088, 20480);
  9                 if (!this.isPortUsed(port))
 10                 {
 11                     serverPort = port.ToString();
 12                     break;
 13                 }
 14             }
 15 
 16             EncodingOptions options = null;
 17             BarcodeWriter writer = null;
 18             options = new QrCodeEncodingOptions
 19             {
 20                 DisableECI = true,
 21                 CharacterSet = "UTF-8",
 22                 Width = this.picBarCode.Width,
 23                 Height = this.picBarCode.Height
 24             };
 25             writer = new BarcodeWriter();
 26             writer.Format = BarcodeFormat.QR_CODE;
 27             writer.Options = options;
 28             Bitmap bitmap = writer.Write("barcodeServer:" + this.serverIp + ":" + this.serverPort);
 29             this.picBarCode.Image = bitmap;
 30         }
 31 
 32 
 33 /// <summary>
 34         /// 得到本机IP
 35         /// </summary>
 36         private string GetLocalIP()
 37         {
 38             NetworkInterface[] interfaces = NetworkInterface.GetAllNetworkInterfaces();
 39             foreach (NetworkInterface ni in interfaces)
 40             {
 41                 foreach (UnicastIPAddressInformation ip in
 42                     ni.GetIPProperties().UnicastAddresses)
 43                 {
 44                     if (ip.Address.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork)
 45                     {
 46                         return ip.Address.ToString();
 47                     }
 48                 }
 49             }
 50 
 51             //本机IP地址
 52             string strLocalIP = "";
 53             //得到计算机名
 54             string strPcName = Dns.GetHostName();
 55             //得到本机IP地址数组
 56             IPAddress[] ipAddress = Dns.GetHostAddresses(strPcName);
 57             //遍历数组
 58             foreach (var IPadd in ipAddress)
 59             {
 60                 //判断当前字符串是否为正确IP地址
 61                 if (IsRightIP(IPadd.ToString()))
 62                 {
 63                     //得到本地IP地址
 64                     strLocalIP = IPadd.ToString();
 65                     //结束循环
 66                     break;
 67                 }
 68             }
 69 
 70             //返回本地IP地址
 71             return strLocalIP;
 72         }
 73 
 74         /// <summary>
 75         /// 判断是否为正确的IP地址
 76         /// </summary>
 77         /// <param name="strIPadd">需要判断的字符串</param>
 78         /// <returns>true = 是 false = 否</returns>
 79         public static bool IsRightIP(string strIPadd)
 80         {
 81             //利用正则表达式判断字符串是否符合IPv4格式
 82             if (Regex.IsMatch(strIPadd, "[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}"))
 83             {
 84                 //根据小数点分拆字符串
 85                 string[] ips = strIPadd.Split(‘.‘);
 86                 if (ips.Length == 4 || ips.Length == 6)
 87                 {
 88                     //如果符合IPv4规则
 89                     if (System.Int32.Parse(ips[0]) < 256 && System.Int32.Parse(ips[1]) < 256 & System.Int32.Parse(ips[2]) < 256 & System.Int32.Parse(ips[3]) < 256)
 90                         //正确
 91                         return true;
 92                     //如果不符合
 93                     else
 94                         //错误
 95                         return false;
 96                 }
 97                 else
 98                     //错误
 99                     return false;
100             }
101             else
102                 //错误
103                 return false;
104         }
105 
106         private bool isPortUsed(int port)
107         {
108             bool isUsed = false;
109             IPGlobalProperties ipProperties = IPGlobalProperties.GetIPGlobalProperties();
110             IPEndPoint[] ipEndPoints = ipProperties.GetActiveTcpListeners();
111 
112             foreach (IPEndPoint endPoint in ipEndPoints)
113             {
114                 if (endPoint.Port == port)
115                 {
116                     isUsed = true;
117                     break;
118                 }
119             }
120             return isUsed;
121         }