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", "驗(yàn)證碼提取失敗:" + 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;   }     /**    * 從短信字符竄提取驗(yàn)證碼    * @param body 短信內(nèi)容      * @param YZMLENGTH 驗(yàn)證碼的長(zhǎng)度 一般6位或者4位    * @return 接取出來(lái)的驗(yàn)證碼    */   public static String getyzm(String body, int YZMLENGTH) {     // 首先([a-zA-Z0-9]{YZMLENGTH})是得到一個(gè)連續(xù)的六位數(shù)字字母組合     // (?<![a-zA-Z0-9])負(fù)向斷言([0-9]{YZMLENGTH})前面不能有數(shù)字     // (?![a-zA-Z0-9])斷言([0-9]{YZMLENGTH})后面不能有數(shù)字出現(xiàn)     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;   } //有些驗(yàn)證碼是純數(shù)字的那么直接用這個(gè)就可以了//Pattern p = Pattern.compile("(?<![0-9])([0-9]{" + YZMLENGTH+ "})(?![0-9])");

 <!-- 發(fā)送短信-->  <uses-permission Android:name="android.permission.SEND_SMS" />  <!-- 閱讀消息 -->  <uses-permission android:name="android.permission.READ_SMS" />  <!-- 寫(xiě)入消息 -->  <uses-permission android:name="android.permission.WRITE_SMS" />  <!-- 接收消息 -->  <uses-permission android:name="android.permission.RECEIVE_SMS" />