Since AppStudio for ArcGIS 4.0 release, there is an added ability to take pictures in the Quick Report template using device native camera with a new AppFramework Camera Dialog component. Refer to the link below for more information:
https://www.esri.com/arcgis-blog/products/appstudio/announcements/whats-new-in-appstudio-appframework-version-4-0/
Download the latest Quick Report from the latest AppStudio Desktop using the link below:
https://www.esri.com/en-us/arcgis/products/appstudio-for-arcgis/resources