Android 中使用ContentObserver模式获取短信用正则自动填充验证码

ContentObserver c=new ContentObserver(han) {         @Override         public void onChange(boolean selfChange) {           // TODO Auto-generated method stub           super.onChange(selfChange);           han.sendEmptyMessage(0);         }       }; getContentResolver().registerContentObserver(Uri.parse("content://sms"), true, c); Handler han = new Handler() {     @SuppressWarnings("deprecation")     public void handleMessage(android.os.Message msg) {       String codestr = null;       try {         codestr = Cus_UnitTools.getsmsyzm(Reg_ForgetPassword.this);         code.setText(codestr);         requestcode();       } catch (Exception e) {         Log.e("yung", "验证码提取失败:" + codestr);       }     };   };    public static String getsmsyzm(Activity c) {     Uri uri = Uri.parse("content://sms/inbox");     String[] projection = new String[] { "address", "person", "body" };     String selection = " address='" + JTPHONE + "' ";     String[] selectionArgs = new String[] {};     String sortOrder = "date desc";     @SuppressWarnings("deprecation")     Cursor cur = c.managedQuery(uri, projection, selection, selectionArgs,         sortOrder);     if(cur!=null&&cur.getCount()>0){       cur.moveToFirst();       String body = cur.getString(cur.getColumnIndex("body")).replaceAll(           "/n", " ");       cur.close();       return getyzm(body, YZMLENGTH);   }     cur.close();     return null;   }     /**    * 从短信字符窜提取验证码    * @param body 短信内容      * @param YZMLENGTH 验证码的长度 一般6位或者4位    * @return 接取出来的验证码    */   public static String getyzm(String body, int YZMLENGTH) {     // 首先([a-zA-Z0-9]{YZMLENGTH})是得到一个连续的六位数字字母组合     // (?<![a-zA-Z0-9])负向断言([0-9]{YZMLENGTH})前面不能有数字     // (?![a-zA-Z0-9])断言([0-9]{YZMLENGTH})后面不能有数字出现     Pattern p = Pattern         .compile("(?<![a-zA-Z0-9])([a-zA-Z0-9]{" + YZMLENGTH + "})(?![a-zA-Z0-9])");     Matcher m = p.matcher(body);     if (m.find()) {       System.out.println(m.group());       return m.group(0);     }     return null;   } //有些验证码是纯数字的那么直接用这个就可以了//Pattern p = Pattern.compile("(?<![0-9])([0-9]{" + YZMLENGTH+ "})(?![0-9])");

 <!-- 发送短信-->  <uses-permission Android:name="android.permission.SEND_SMS" />  <!-- 阅读消息 -->  <uses-permission android:name="android.permission.READ_SMS" />  <!-- 写入消息 -->  <uses-permission android:name="android.permission.WRITE_SMS" />  <!-- 接收消息 -->  <uses-permission android:name="android.permission.RECEIVE_SMS" />