public void submitClick(View v) {
    String userid = userEmail.getText().toString();
    String pass = passwd.getText().toString();

    if (userid.length() > 0 && pass.length() > 0) {
      Toast.makeText(this, "Correct data entered", Toast.LENGTH_LONG).show();
      // Save data in Shared Preference
      /*
      SharedPreferences pref = getSharedPreferences("auth", MODE_PRIVATE);
      SharedPreferences.Editor editor = pref.edit();
      editor.putString("userid", userid);
      editor.putString("password", pass);
      editor.commit();
      */

      DBWrapper wrapper = new DBWrapper(this);
      long rowid = wrapper.addCredentials(userid, pass);
      if (rowid != -1) Toast.makeText(this, "Data Saved in DB", Toast.LENGTH_LONG).show();
      else Toast.makeText(this, "Error saving in DB", Toast.LENGTH_LONG).show();

    } else Toast.makeText(this, "Please enter data", Toast.LENGTH_SHORT).show();
  }