GroupActivities / SharePlay

Build shared real-time experiences using the GroupActivities framework. SharePlay connects people over FaceTime or iMessage, synchronizing media playback, app state, or custom data. Targets Swift 6.3 / iOS 26+.

Contents

• Setup
• Defining a GroupActivity
• Session Lifecycle
• Sending and Receiving Messages
• Coordinated Media Playback
• Starting SharePlay from Your App
• GroupSessionJournal: File Transfer
• Common Mistakes
• Review Checklist
• References