• Android 开发学习笔记(五)—— 最简单的注册界面


     public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            ReSetBtn =(Button)findViewById(R.id.ReSetBtn);
            OkBtn =(Button)findViewById(R.id.OKBtn);
            OkBtn.setOnClickListener(
              new OnClickListener(){
               @Override
               public void onClick(View v)
               {
                final String url = "http://192.168.1.18/AndroidService.php";
                EditText user = (EditText)findViewById(R.id.username);
                EditText pass = (EditText)findViewById(R.id.password);
                final Map<String,String> params = new HashMap<String,String>();
                params.put("name", user.getText().toString());
                params.put("pass", pass.getText().toString());
                new Thread(){
                 public void run(){
                  String msgStr=HttpUploadUtil.postWithoutFile(url,params);
                  Bundle b = new Bundle();
                  b.putString("msg", msgStr);
                  Message msg = new Message();
                  msg.what = 1;
                  msg.setData(b);
                  hd.sendMessage(msg);
                 }
                }.start();
               }
              }
            );
        }

    // 一个HttpUploadUtil类 主要用来发送Http请求

    //通过Http协议发送带文件或不带文件的请求的工具类
    public class HttpUploadUtil
    {
     
     //不带文件的请求发送方法
     public static String postWithoutFile
     (   
       String actionUrl, //请求的URL
       Map<String, String> params //请求的参数序列
     )
     {  
      HttpClient httpclient = new DefaultHttpClient();
      //你的URL
      HttpPost httppost = new HttpPost(actionUrl);
      try {
         List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(params.size());
        
         for (Map.Entry<String, String> entry : params.entrySet())
         {//构建表单字段内容 
                 nameValuePairs.add(new BasicNameValuePair(entry.getKey(),MyConverter.escape(entry.getValue())));
            } 
         httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
         HttpResponse response;
         response=httpclient.execute(httppost);
         InputStream in=response.getEntity().getContent();
         ByteArrayOutputStream baos = new ByteArrayOutputStream();
         int ch=0;
          while((ch=in.read())!=-1)
          {
             baos.write(ch);
          }     
          byte[] data=baos.toByteArray();
          baos.close();
          return MyConverter.unescape(new String(data).trim());
        } catch (Exception e)
        {
         e.printStackTrace();
         return "error";
        }
     }
    }

    // 转换HTTP请求的编码(十六进制)

    public class MyConverter

    {   

        private final static String[] hex =

        {

            "00","01","02","03","04","05","06","07","08","09","0a","0b","0c","0d","0e","0f",

            "10","11","12","13","14","15","16","17","18","19","1a","1b","1c","1d","1e","1f",

            "20","21","22","23","24","25","26","27","28","29","2a","2b","2c","2d","2e","2f",

            "30","31","32","33","34","35","36","37","38","39","3a","3b","3c","3d","3e","3f",

            "40","41","42","43","44","45","46","47","48","49","4a","4b","4c","4d","4e","4f",

            "50","51","52","53","54","55","56","57","58","59","5a","5b","5c","5d","5e","5f",

            "60","61","62","63","64","65","66","67","68","69","6a","6b","6c","6d","6e","6f",

            "70","71","72","73","74","75","76","77","78","79","7a","7b","7c","7d","7e","7f",

            "80","81","82","83","84","85","86","87","88","89","8a","8b","8c","8d","8e","8f",

            "90","91","92","93","94","95","96","97","98","99","9a","9b","9c","9d","9e","9f",

            "a0","a1","a2","a3","a4","a5","a6","a7","a8","a9","aa","ab","ac","ad","ae","af",

            "b0","b1","b2","b3","b4","b5","b6","b7","b8","b9","ba","bb","bc","bd","be","bf",

            "c0","c1","c2","c3","c4","c5","c6","c7","c8","c9","ca","cb","cc","cd","ce","cf",

            "d0","d1","d2","d3","d4","d5","d6","d7","d8","d9","da","db","dc","dd","de","df",

            "e0","e1","e2","e3","e4","e5","e6","e7","e8","e9","ea","eb","ec","ed","ee","ef",

            "f0","f1","f2","f3","f4","f5","f6","f7","f8","f9","fa","fb","fc","fd","fe","ff"

        };

        private final static byte[] val =

        {

            0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,

            0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,

            0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,

            0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,

            0x3f,0x0a,0x0b,0x0c,0x0d,0x0e,0x0f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,

            0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,

            0x3f,0x0a,0x0b,0x0c,0x0d,0x0e,0x0f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,

            0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,

            0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,

            0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,

            0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,

            0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,

            0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,

            0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,

            0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,

            0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f

        };

      

        public static String escape(String s)

        {   

                 StringBuffer sbuf = new StringBuffer();   

                 int len = s.length();   

                 for (int i = 0; i < len; i++)

                 {   

                           int ch = s.charAt(i);   

                           if ('A' <= ch && ch <= 'Z')

                           {   

                                    sbuf.append((char) ch);   

                           }

                           else if ('a' <= ch && ch <= 'z')

                           {   

                                    sbuf.append((char) ch);   

                           }

                           else if ('0' <= ch && ch <= '9')

                           {          

                                    sbuf.append((char) ch);   

                           }

                           else if (ch == '-' || ch == '_'    

                                              || ch == '.' || ch == '!' || ch == '~' || ch == '*'   

                                              || ch == '\'' || ch == '(' || ch == ')')

                           {   

                                    sbuf.append((char) ch);   

                           } else if (ch <= 0x007F)

                           {   

                                    sbuf.append('%');   

                                    sbuf.append(hex[ch]);   

                           } else

                           {   

                                    sbuf.append('%');   

                                    sbuf.append('u');   

                                    sbuf.append(hex[(ch >>> 8)]);   

                                    sbuf.append(hex[(0x00FF & ch)]);   

                           }   

                 }   

                 return sbuf.toString();   

        }   

      

        public static String unescape(String s)

        {   

                 StringBuffer sbuf = new StringBuffer();   

                 int i = 0;   

                 int len = s.length();   

                 while (i < len)

                 {   

                           int ch = s.charAt(i);   

                           if ('A' <= ch && ch <= 'Z')

                           {   

                                    sbuf.append((char) ch);   

                           }

                           else if ('a' <= ch && ch <= 'z')

                           {    

                                    sbuf.append((char) ch);   

                           } else if ('0' <= ch && ch <= '9')

                           {

                                         sbuf.append((char) ch);   

                           }

                           else if (ch == '-' || ch == '_'|| ch == '.'

                                    || ch == '!' || ch == '~' || ch == '*'

                                    || ch == '\'' || ch == '(' || ch == ')')

                           {   

                               sbuf.append((char) ch);   

                           }

                           else if (ch == '%')

                           {   

                                    int cint = 0;   

                                    if ('u' != s.charAt(i + 1))

                                    {   

                                             cint = (cint << 4) | val[s.charAt(i + 1)];   

                                             cint = (cint << 4) | val[s.charAt(i + 2)];   

                                             i += 2;   

                                    } else

                                    {   

                                             cint = (cint << 4) | val[s.charAt(i + 2)];   

                                             cint = (cint << 4) | val[s.charAt(i + 3)];   

                                             cint = (cint << 4) | val[s.charAt(i + 4)];   

                                             cint = (cint << 4) | val[s.charAt(i + 5)];   

                                             i += 5;   

                                    }   

                                    sbuf.append((char) cint);   

                           } else

                           {   

                                    sbuf.append((char) ch);   

                           }   

                           i++;   

                 }   

                 return sbuf.toString();   

        }   

    }

    // 在Manifest.xml 中添加 一下来访问网络

    <uses-permission android:name="android.permission.INTERNET" />

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  • 原文地址:https://www.cnblogs.com/oftenlin/p/2745074.html
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