Transfert Data to a mobile app with a connexion between Garmin connect and the mobile app

Hello Developer Friends,

I'm reaching out to you today because I've hit a roadblock. I'm trying to develop an application that retrieves information related to running recorded in Garmin Connect. So far, my application successfully connects to the Garmin Connect portal, allowing me to obtain a request token. I've also managed to retrieve information for a given date, such as the number of activities and details about those activities.

However, I've encountered a problem. I can only retrieve activities for the date of January 8th. I would like to know if you have any documentation on how to retrieve Garmin activity elements in Java for an application on Android Studio.

If necessary, I can provide code snippets later on.

Thank you in advance if you can assist me.