Run vnc viewer from Qt app

[mrdebug]

Hi everybody.
I'm managing embedded devices with an app for Android - iOS based on Qt.
The devices have a display with vnc service activated.
In order to manage fastly the devices I have added a button to open (in an Android smartphone) the ssh client. Now I'm trying to do the same thing with vnc but I can't.
Do you know if exists a vnc client for Android that can be open from an external Activity?