public void setPinCode(String pinCode) {
        mPinCode = pinCode;
        mPinCodeRoundView.refresh(mPinCode.length());
    }
Set the pincode and refreshes the {@link com.github.omadahealth.lollipin.lib.views.PinCodeRoundView}
lib/src/main/java/com/github/omadahealth/lollipin/lib/managers/AppLockActivity.java