Convert code from QT5 to QT6 for sending messages in Android

Hamed_S

Hello everyone. This piece of my code is in c++ to send sms on android. How can I fix the following errors?
my c++ code in QT6 for sending sms:

jint msgId = ++_nextMsgId;
++_nbMsgs;
_sendingMsgs.insert(msgId, new SmsStatus(msgId));
   QJniObject ::callStaticMethod <void>("sendMessage"  (ILjava/lang/String;Ljava/lang/String;)V",  msgId, myPhoneNumber.object<jstring>(),

myTextMessage.object<jstring>());

and this is my java function to call send sms:

public void sendMessage(int msgId, String destMobile,
String msg) {
SmsManager sms = SmsManager.getDefault();

	if (msg.length() < SMS_MAX_SIZE)
	{
  Log.d("sendMessage", "sending single SMSsendTextMessage API, msgId: " + msgId);

and got this error while running in android mobile:

JNI DETECTED ERROR IN APPLICATION: GetStaticMethodID received NULL jclass

original sendMessage function in QT5:

QtAndroid::androidActivity().callMethod<void>("sendMessage", (ILjava/lang/String;Ljava/lang/String;)V",
msgId,myPhoneNumber.object<jstring>(),
myTextMessage.object<jstring>());