fix build warnings

Author: tstromberg

app/src/main/kotlin/com/heisenberg/lux/DetectionService.kt

@@ -61,6 +61,9 @@ class DetectionService : Service(), LifecycleOwner {
         prefs.registerOnSharedPreferenceChangeListener(prefsListener)
 
         powerManager = getSystemService(Context.POWER_SERVICE) as PowerManager
+        // Note: These flags are deprecated in API 29+ but are the simplest way to wake the screen
+        // from a background service without showing UI. Modern alternatives require launching an Activity.
+        @Suppress("DEPRECATION")
         wakeLock = powerManager.newWakeLock(
             PowerManager.SCREEN_BRIGHT_WAKE_LOCK or PowerManager.ACQUIRE_CAUSES_WAKEUP,
             "HeisenbergLux::WakeLock"

app/src/main/kotlin/com/heisenberg/lux/MainActivity.kt

@@ -126,12 +126,12 @@ class MainActivity : AppCompatActivity() {
             })
 
             // Setup light sensor
-            lightSeekBar?.progress = lightSensitivity
+            lightSeekBar.progress = lightSensitivity
             val lightThreshold = calculateLightThreshold(lightSensitivity)
             val lightThresholdPercent = ((lightThreshold / LIGHT_MAX_LEVEL) * 100f).coerceIn(0f, 100f).toInt()
-            lightValue?.text = if (lightSensitivity == 0) getString(R.string.disabled_caps) else "$lightThresholdPercent%"
+            lightValue.text = if (lightSensitivity == 0) getString(R.string.disabled_caps) else "$lightThresholdPercent%"
 
-            lightSeekBar?.setOnSeekBarChangeListener(object : SeekBar.OnSeekBarChangeListener {
+            lightSeekBar.setOnSeekBarChangeListener(object : SeekBar.OnSeekBarChangeListener {
                 override fun onProgressChanged(seekBar: SeekBar?, progress: Int, fromUser: Boolean) {
                     val threshold = calculateLightThreshold(progress)
                     val thresholdPercent = ((threshold / LIGHT_MAX_LEVEL) * 100f).coerceIn(0f, 100f).toInt()
@@ -296,14 +296,14 @@ class MainActivity : AppCompatActivity() {
                 val lightSensitivity = prefs.getInt(KEY_LIGHT_SENSITIVITY, 50)
                 if (lightSensitivity == 0) {
                     // Don't update display when disabled
-                    binding.lightValue?.text = getString(R.string.disabled_caps)
+                    binding.lightValue.text = getString(R.string.disabled_caps)
                 } else {
                     // Convert light level to percentage (0-5 lux -> 0-100%)
                     val levelPercent = ((currentLevel / LIGHT_MAX_LEVEL) * 100f).coerceIn(0f, 100f).toInt()
                     val thresholdPercent = ((threshold / LIGHT_MAX_LEVEL) * 100f).coerceIn(0f, 100f).toInt()
-                    binding.lightLiveReading?.text = "$emoji Current activity level: $levelPercent%"
+                    binding.lightLiveReading.text = "$emoji Current activity level: $levelPercent%"
                     // Also update the slider value display with threshold
-                    binding.lightValue?.text = "$thresholdPercent%"
+                    binding.lightValue.text = "$thresholdPercent%"
                 }
             }
         }

app/src/main/kotlin/com/heisenberg/lux/MotionDetector.kt

@@ -96,7 +96,18 @@ class MotionDetector(
         }
 
         imageAnalysis = ImageAnalysis.Builder()
-            .setTargetResolution(Size(320, 240))
+            .setResolutionSelector(
+                androidx.camera.core.resolutionselector.ResolutionSelector.Builder()
+                    .setResolutionFilter { supportedSizes, _ ->
+                        // Filter to get closest to 320x240
+                        supportedSizes.sortedBy {
+                            val width = if (it.width < it.height) it.width else it.height
+                            val height = if (it.width < it.height) it.height else it.width
+                            kotlin.math.abs(width - 320) + kotlin.math.abs(height - 240)
+                        }
+                    }
+                    .build()
+            )
             .setBackpressureStrategy(ImageAnalysis.STRATEGY_KEEP_ONLY_LATEST)
             .build()
             .also {