จัดการอินพุตทางกายภาพจากแว่นตาที่มีระบบเสียงและแว่นตาที่มีจอแสดงผล

@OptIn(ExperimentalProjectedApi::class)
class CameraActionInputSnippetActivity : ComponentActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        // Observe hardware camera action events when RESUMED
        lifecycleScope.launch {
            repeatOnLifecycle(Lifecycle.State.RESUMED) {
                withContext(Dispatchers.Default) {
                    try {
                        val projectedActivity = ProjectedActivityCompat.create(this@CameraActionInputSnippetActivity)
                        try {
                            projectedActivity.projectedInputEvents.collect { inputEvent ->
                                if (inputEvent.inputAction == TOGGLE_APP_CAMERA) {
                                    withContext(Dispatchers.Main) {
                                        onCameraActionTriggered()
                                    }
                                }
                            }
                        } finally {
                            projectedActivity.close()
                        }
                    } catch (e: CancellationException) {
                        throw e
                    } catch (e: Exception) {
                        Log.w("CameraActionSnippet", "ProjectedActivityCompat unavailable: ${e.message}")
                    }
                }
            }
        }

        setContent {
            GlimmerTheme {
                TouchpadInputSnippet(
                    onTap = { Log.i("CameraActionSnippet", "Touchpad tapped") }
                )
            }
        }
    }

    private fun onCameraActionTriggered() {
        Log.i("CameraActionSnippet", "Camera action button double-pressed!")
    }
}
InputSamples.kt

class MotionGestureInputSnippetActivity : ComponentActivity() {

    override fun dispatchGenericMotionEvent(ev: MotionEvent): Boolean {
        val actionName = when (ev.actionMasked) {
            MotionEvent.ACTION_DOWN -> "ACTION_DOWN" // First contact with the glasses touchpad
            MotionEvent.ACTION_MOVE -> "ACTION_MOVE" // Contact moving across the glasses touchpad
            MotionEvent.ACTION_UP -> "ACTION_UP"     // Contact lifted from the glasses touchpad
            else -> "ACTION_${ev.actionMasked}"
        }

        Log.d(
            "MotionGestureSnippet",
            "MotionEvent: action=$actionName x=${ev.x} y=${ev.y}"
        )

        // Delegate to super unless intentionally consuming the event
        return super.dispatchGenericMotionEvent(ev)
    }
}
InputSamples.kt

class BackGestureInputSnippetActivity : ComponentActivity() {

    private val backCallback = object : OnBackPressedCallback(true) {
        override fun handleOnBackPressed() {
            onBackGestureReceived()
        }
    }

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        // Register back gesture callback with Activity's onBackPressedDispatcher
        onBackPressedDispatcher.addCallback(this, backCallback)
    }

    private fun onBackGestureReceived() {
        Log.i("BackGestureSnippet", "System back gesture intercepted")
    }
}
InputSamples.kt