Without native code, how to get iOS and Android device id?

[Quang Phu]

Hello,

I am trying to get device unique id of android and iOS, how to get that without native code?
I used

    qDebug() << "Machine ID:" << QSysInfo::machineUniqueId();

I worked well on MacOS with display "Machine ID: "B4AC7FB2-555D-5F77-BA59-D38B28F9821F"" but return "" on mobile devices.
I searched on Internet but it seems must use native code for each mobile os.

[Nils Sjoberg]

Write a small native JNI layer for Android, Objective-C++ for iOS to access Android ID / identifierForVendor, because QSysInfo::machineUniqueId() is not implemented on mobile platforms in Qt