Unsolved Font Size Chage in QML UI

[HemantZ]

I have developed one android Application in Qt/QML,It is working well. but,when i change my Android phone setting eg.Display font->small to medium or medium to big. It is not applied in my application there is no change in the application. How to achieve this change in my application. Thanks in advance.

example:- if i change font size of display settings of android phone,then it automatically changes the font size of every app eq.whatsapp,facebook etc. but in my case, i have developed a android app in Qt/QML and it does not change with respect to display font size.