Automatically fill in Android SMS verification code

import ;
import ;
import ;
import ;
import ;
import ;
import ;

import ;
import ;

/**
 * Created by 001 on 17/3/22.
 */

public class SmsObserver extends ContentObserver {

  public static final String SMS_URI_INBOX = "content://sms/inbox";
  private Activity activity = null;
  private String smsContent = "";
  private SmsListener listener;

  public SmsObserver(Activity activity, Handler handler, SmsListener listener) {
    super(handler);
     = activity;
     = listener;
  }

  @Override
  public void onChange(boolean selfChange) {
    (selfChange);
    Cursor cursor = null;
    // Read text messages containing a keyword in your inbox    ContentResolver contentResolver = ();
    cursor = ((SMS_URI_INBOX), new String[] {
            "_id", "address", "body", "read" }, "body like ? and read=?",
        new String[] { "%Keyword%", "0" }, "date desc");
    if (cursor != null) {
      ();
      if (()) {
        String smsbody = cursor
            .getString(("body"));
        String regEx = "[^0-9]";
        Pattern p = (regEx);
        Matcher m = (());
        smsContent = ("").trim().toString();
        if (!(smsContent)) {
          (smsContent);
        }

      }
    }
  }

  /*
    * SMS callback interface
    */
  public interface SmsListener {
    /**
      * Accept sms status
      *
      * @Title: onResult
      */
    void onResult(String smsContent);
  }
}

SmsObserver smsObserver = new SmsObserver(this, new Handler(), new () {
      @Override
      public void onResult(String smsContent) {
 //Write according to your needs //For example:(smsContent);      }    });().registerContentObserver(("content://sms/"), true, smsObserver);