I want to develop an app for my own Garmin Vivo active 3 music for this I need to access the live/current data of steps and sleep from my own watch, is there a way I can get an access to this data and create a callback when a certain event is triggered?
SHORT ANSWER: The Garmin Connect IQ API does NOT directly provide any information on the number of STEPS or the (amount of) SLEEP.
It does provide the underlying (bare) information from which you could (in principle) calculate these properties. Just have a look at
Toybox::Activity::Info
at https://developer.garmin.com/connect-iq/api-docs/ANOTHER SUPPORTING QUESTION:
For clarification: When you say you want to develop an "app": Do you mean you want to develop
In case of (1) you'd need the Garmin Connect IQ (http://developer.garmin.com/connect-iq). In case of (2), you'd need (1) plus more (which I will answer when you tell me that's what you need).
-cfs