diff --git a/app/src/main/kotlin/com/simplemobiletools/flashlight/activities/BrightDisplayActivity.kt b/app/src/main/kotlin/com/simplemobiletools/flashlight/activities/BrightDisplayActivity.kt
index 6491d33..d31f1f8 100644
--- a/app/src/main/kotlin/com/simplemobiletools/flashlight/activities/BrightDisplayActivity.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/flashlight/activities/BrightDisplayActivity.kt
@@ -11,7 +11,7 @@ import com.simplemobiletools.flashlight.databinding.ActivityBrightDisplayBinding
 import com.simplemobiletools.flashlight.extensions.config
 
 class BrightDisplayActivity : SimpleActivity() {
-    private lateinit var binding: ActivityBrightDisplayBinding
+    private val binding by lazy(LazyThreadSafetyMode.NONE) { ActivityBrightDisplayBinding.inflate(layoutInflater) }
 
     override fun onCreate(savedInstanceState: Bundle?) {
         window.addFlags(
@@ -23,7 +23,6 @@ class BrightDisplayActivity : SimpleActivity() {
 
         useDynamicTheme = false
         super.onCreate(savedInstanceState)
-        binding = ActivityBrightDisplayBinding.inflate(layoutInflater)
         setContentView(binding.root)
         supportActionBar?.hide()
         setBackgroundColor(config.brightDisplayColor)
diff --git a/app/src/main/kotlin/com/simplemobiletools/flashlight/activities/MainActivity.kt b/app/src/main/kotlin/com/simplemobiletools/flashlight/activities/MainActivity.kt
index f297822..6310283 100644
--- a/app/src/main/kotlin/com/simplemobiletools/flashlight/activities/MainActivity.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/flashlight/activities/MainActivity.kt
@@ -28,12 +28,15 @@ import org.greenrobot.eventbus.Subscribe
 import java.util.*
 
 class MainActivity : SimpleActivity() {
-    private val MAX_STROBO_DELAY = 2000L
-    private val MIN_STROBO_DELAY = 10L
-    private val FLASHLIGHT_STATE = "flashlight_state"
-    private val STROBOSCOPE_STATE = "stroboscope_state"
+    companion object {
+        private const val MAX_STROBO_DELAY = 2000L
+        private const val MIN_STROBO_DELAY = 10L
+        private const val FLASHLIGHT_STATE = "flashlight_state"
+        private const val STROBOSCOPE_STATE = "stroboscope_state"
+    }
+
+    private val binding by lazy(LazyThreadSafetyMode.NONE) { ActivityMainBinding.inflate(layoutInflater) }
 
-    private lateinit var binding: ActivityMainBinding
     private var mBus: EventBus? = null
     private var mCameraImpl: MyCameraImpl? = null
     private var mIsFlashlightOn = false
@@ -42,7 +45,6 @@ class MainActivity : SimpleActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         isMaterialActivity = true
         super.onCreate(savedInstanceState)
-        binding = ActivityMainBinding.inflate(layoutInflater)
         setContentView(binding.root)
         appLaunched(BuildConfig.APPLICATION_ID)
         setupOptionsMenu()
diff --git a/app/src/main/kotlin/com/simplemobiletools/flashlight/activities/SettingsActivity.kt b/app/src/main/kotlin/com/simplemobiletools/flashlight/activities/SettingsActivity.kt
index b5d7017..e46c15f 100644
--- a/app/src/main/kotlin/com/simplemobiletools/flashlight/activities/SettingsActivity.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/flashlight/activities/SettingsActivity.kt
@@ -12,12 +12,11 @@ import java.util.Locale
 import kotlin.system.exitProcess
 
 class SettingsActivity : SimpleActivity() {
-    private lateinit var binding: ActivitySettingsBinding
+    private val binding by lazy(LazyThreadSafetyMode.NONE) { ActivitySettingsBinding.inflate(layoutInflater) }
 
     override fun onCreate(savedInstanceState: Bundle?) {
         isMaterialActivity = true
         super.onCreate(savedInstanceState)
-        binding = ActivitySettingsBinding.inflate(layoutInflater)
         setContentView(binding.root)
 
         binding.apply {
diff --git a/app/src/main/kotlin/com/simplemobiletools/flashlight/activities/WidgetBrightDisplayConfigureActivity.kt b/app/src/main/kotlin/com/simplemobiletools/flashlight/activities/WidgetBrightDisplayConfigureActivity.kt
index 8968cbd..f64a499 100644
--- a/app/src/main/kotlin/com/simplemobiletools/flashlight/activities/WidgetBrightDisplayConfigureActivity.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/flashlight/activities/WidgetBrightDisplayConfigureActivity.kt
@@ -17,7 +17,8 @@ import com.simplemobiletools.flashlight.extensions.config
 import com.simplemobiletools.flashlight.helpers.MyWidgetBrightDisplayProvider
 
 class WidgetBrightDisplayConfigureActivity : SimpleActivity() {
-    private lateinit var binding: WidgetBrightDisplayConfigBinding
+    private val binding by lazy(LazyThreadSafetyMode.NONE) { WidgetBrightDisplayConfigBinding.inflate(layoutInflater) }
+
     private var mWidgetAlpha = 0f
     private var mWidgetId = 0
     private var mWidgetColor = 0
@@ -27,7 +28,6 @@ class WidgetBrightDisplayConfigureActivity : SimpleActivity() {
     public override fun onCreate(savedInstanceState: Bundle?) {
         useDynamicTheme = false
         super.onCreate(savedInstanceState)
-        binding = WidgetBrightDisplayConfigBinding.inflate(layoutInflater)
         setResult(Activity.RESULT_CANCELED)
         setContentView(binding.root)
         initVariables()
diff --git a/app/src/main/kotlin/com/simplemobiletools/flashlight/activities/WidgetTorchConfigureActivity.kt b/app/src/main/kotlin/com/simplemobiletools/flashlight/activities/WidgetTorchConfigureActivity.kt
index 624b2bd..5e50ceb 100644
--- a/app/src/main/kotlin/com/simplemobiletools/flashlight/activities/WidgetTorchConfigureActivity.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/flashlight/activities/WidgetTorchConfigureActivity.kt
@@ -18,7 +18,8 @@ import com.simplemobiletools.flashlight.extensions.updateBrightDisplayWidget
 import com.simplemobiletools.flashlight.helpers.MyWidgetTorchProvider
 
 class WidgetTorchConfigureActivity : SimpleActivity() {
-    private lateinit var binding: WidgetTorchConfigBinding
+    private val binding by lazy(LazyThreadSafetyMode.NONE) { WidgetTorchConfigBinding.inflate(layoutInflater) }
+
     private var mWidgetAlpha = 0f
     private var mWidgetId = 0
     private var mWidgetColor = 0
@@ -28,7 +29,6 @@ class WidgetTorchConfigureActivity : SimpleActivity() {
     public override fun onCreate(savedInstanceState: Bundle?) {
         useDynamicTheme = false
         super.onCreate(savedInstanceState)
-        binding = WidgetTorchConfigBinding.inflate(layoutInflater)
         setResult(Activity.RESULT_CANCELED)
         setContentView(binding.root)
         initVariables()