public class GetSmsContent extends ContentObserver{      public final String SMS_URI_INBOX = "content://sms/inbox";      private Activity activity = null;      private String smsContent = "";      private EditText verifyText = null;            private String SMS_BODY = "【我在济南】%";//短息内容包含【我在济南】          public GetSmsContent(Activity activity, Handler handler, EditText verifyText) {          super(handler);          this.activity = activity;          this.verifyText = verifyText;      }        /**     * This method is called when a content change occurs.      * 当短信箱（收到/删除/发送 一条短信）发生变换时，该方法才能被调用。     */    @Override      public void onChange(boolean selfChange) {          super.onChange(selfChange);          Cursor cursor = null;// 光标          // 读取收件箱中短信内容中包含【我在济南】的短信          cursor = activity.managedQuery(Uri.parse(SMS_URI_INBOX),                   new String[] { "_id", "address", "body", "read" }, //要读取的属性                  "body like ?", //查询条件是什么                  new String[] { SMS_BODY },//查询条件赋值                  "date desc");//排序          if (cursor != null) {// 如果短信为未读模式              cursor.moveToFirst();              if (cursor.moveToFirst()) {                  String smsbody = cursor.getString(cursor.getColumnIndex("body"));                  System.out.println("smsbody=======================" + smsbody);                //截取短信内容中第一个逗号之前的字符串。然后通过正则表达式找出字符串中的数字。                String s = smsbody.substring(0, smsbody.indexOf("，"));                String regEx = "[^0-9]";                  Pattern p = Pattern.compile(regEx);                  Matcher m = p.matcher(s.toString());                  smsContent = m.replaceAll("").trim().toString();                  if(verifyText != null && null!=smsContent && !"".equals(smsContent)){                      verifyText.setText(smsContent);                      verifyText.setSelection(smsContent.length());                  }              }          }      }  }

调用方法：在Activity的oncreate方法里面注册：

GetSmsContent  content = new GetSmsContent(RegisterByPhone.this, new Handler(), edit_yzm);