Jetpack XR SDK for Smart Glasses: Building Context-Aware Wearable Experiences

Introduction

Context-aware wearable software can adapt its UI based on user activity, device state, and application context.

1. Separate context from UI

data class WearableContext(
    val connected: Boolean,
    val batteryPercent: Int,
    val currentTask: String?
)

2. Create a context provider

interface ContextProvider {
    fun current(): WearableContext
}

3. Build a wearable presentation layer

class WearablePresenter {

    fun present(context: WearableContext): String {
        return when {
            !context.connected -> "Device disconnected"
            context.batteryPercent < 15 -> "Low battery"
            context.currentTask != null -> context.currentTask
            else -> "Ready"
        }
    }
}

4. Integrate Android XR

Use the current Jetpack XR SDK APIs appropriate for the target device and experience. Keep these APIs in an XR-specific module instead of spreading them throughout the application.

5. Add contextual AI

A context object can be transformed into a compact AI request:

Device: connected
Battery: 72%
Task: Navigation
User request: "What's next?"

The model can return a short response suitable for the wearable display or audio channel.

6. Test context changes

Test transitions such as:

Connected → Disconnected
Normal battery → Low battery
Idle → Active task
Network available → Offline

Conclusion

Context-aware architecture makes wearable applications more resilient and easier to adapt to new XR hardware.

Useful Links

Website: www.v-modal.com

SDK Flutter: https://github.com/v-modal/vmodal_sdk_flutter

SDK Android: https://github.com/v-modal/vmodal_sdk_android

Discord: https://discord.gg/K72z28KUx

Reddit: https://www.reddit.com/r/v_modal/