diff --git a/app/build.gradle b/app/build.gradle
index 6530752..2c6456c 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -16,14 +16,10 @@
 
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
-apply plugin: 'kotlin-android-extensions'
+apply plugin: 'kotlin-parcelize'
 apply plugin: "androidx.navigation.safeargs.kotlin"
 apply plugin: 'kotlin-kapt'
 
-androidExtensions {
-    experimental = true
-}
-
 android {
     compileSdkVersion 30
     defaultConfig {
@@ -49,6 +45,9 @@ android {
         // set to empty string to disable this check
         buildConfigField 'String', 'updateServerBuildsCertificate', '"2170068198547F15129DE8CC46E2A8BF1485A6E5030916E26DDE41AE0E81DAC2"'
     }
+    buildFeatures {
+        viewBinding true
+    }
 
     flavorDimensions 'api', 'channel', 'server'
     productFlavors {
diff --git a/app/src/main/java/io/timelimit/android/data/customtypes/Bitmask.kt b/app/src/main/java/io/timelimit/android/data/customtypes/Bitmask.kt
index 27c5d0b..161f66b 100644
--- a/app/src/main/java/io/timelimit/android/data/customtypes/Bitmask.kt
+++ b/app/src/main/java/io/timelimit/android/data/customtypes/Bitmask.kt
@@ -1,5 +1,5 @@
 /*
- * TimeLimit Copyright <C> 2019 Jonas Lochmann
+ * TimeLimit Copyright <C> 2019 - 2021 Jonas Lochmann
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -18,7 +18,7 @@ package io.timelimit.android.data.customtypes
 import android.os.Parcelable
 import android.text.TextUtils
 import androidx.room.TypeConverter
-import kotlinx.android.parcel.Parcelize
+import kotlinx.parcelize.Parcelize
 import java.util.*
 import kotlin.collections.ArrayList
 
diff --git a/app/src/main/java/io/timelimit/android/data/model/TimeLimitRule.kt b/app/src/main/java/io/timelimit/android/data/model/TimeLimitRule.kt
index a874757..ce3808a 100644
--- a/app/src/main/java/io/timelimit/android/data/model/TimeLimitRule.kt
+++ b/app/src/main/java/io/timelimit/android/data/model/TimeLimitRule.kt
@@ -1,5 +1,5 @@
 /*
- * TimeLimit Copyright <C> 2019 - 2020 Jonas Lochmann
+ * TimeLimit Copyright <C> 2019 - 2021 Jonas Lochmann
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -29,7 +29,7 @@ import io.timelimit.android.data.customtypes.ImmutableBitmaskAdapter
 import io.timelimit.android.extensions.MinuteOfDay
 import io.timelimit.android.livedata.ignoreUnchanged
 import io.timelimit.android.livedata.map
-import kotlinx.android.parcel.Parcelize
+import kotlinx.parcelize.Parcelize
 
 @Entity(tableName = "time_limit_rule")
 @TypeConverters(ImmutableBitmaskAdapter::class)
diff --git a/app/src/main/java/io/timelimit/android/integration/platform/PlatformIntegration.kt b/app/src/main/java/io/timelimit/android/integration/platform/PlatformIntegration.kt
index 1a8e230..e8951e3 100644
--- a/app/src/main/java/io/timelimit/android/integration/platform/PlatformIntegration.kt
+++ b/app/src/main/java/io/timelimit/android/integration/platform/PlatformIntegration.kt
@@ -21,7 +21,7 @@ import androidx.lifecycle.LiveData
 import androidx.room.TypeConverter
 import io.timelimit.android.data.model.App
 import io.timelimit.android.data.model.AppActivity
-import kotlinx.android.parcel.Parcelize
+import kotlinx.parcelize.Parcelize
 
 abstract class PlatformIntegration(
         val maximumProtectionLevel: ProtectionLevel
diff --git a/app/src/main/java/io/timelimit/android/ui/fragment/SingleFragmentWrapper.kt b/app/src/main/java/io/timelimit/android/ui/fragment/SingleFragmentWrapper.kt
index 791b626..2cb3f19 100644
--- a/app/src/main/java/io/timelimit/android/ui/fragment/SingleFragmentWrapper.kt
+++ b/app/src/main/java/io/timelimit/android/ui/fragment/SingleFragmentWrapper.kt
@@ -23,41 +23,40 @@ import androidx.fragment.app.Fragment
 import androidx.navigation.NavController
 import androidx.navigation.Navigation
 import io.timelimit.android.R
+import io.timelimit.android.databinding.SingleFragmentWrapperBinding
 import io.timelimit.android.livedata.liveDataFromNonNullValue
 import io.timelimit.android.ui.main.ActivityViewModelHolder
 import io.timelimit.android.ui.main.AuthenticationFab
-import kotlinx.android.synthetic.main.single_fragment_wrapper.*
 
 abstract class SingleFragmentWrapper: Fragment() {
     val activity: ActivityViewModelHolder by lazy { getActivity() as ActivityViewModelHolder }
     private lateinit var navController: NavController
+    protected lateinit var binding: SingleFragmentWrapperBinding
 
     protected val navigation get() = navController
 
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
         navController = Navigation.findNavController(container!!)
 
-        return inflater.inflate(R.layout.single_fragment_wrapper, container, false)
-    }
-
-    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
-        super.onViewCreated(view, savedInstanceState)
+        binding = SingleFragmentWrapperBinding.inflate(inflater, container, false)
 
         AuthenticationFab.manageAuthenticationFab(
-                fab = fab,
+                fab = binding.fab,
                 fragment = this,
                 shouldHighlight = activity.getActivityViewModel().shouldHighlightAuthenticationButton,
                 authenticatedUser = activity.getActivityViewModel().authenticatedUser,
                 doesSupportAuth = liveDataFromNonNullValue(showAuthButton)
         )
 
-        fab.setOnClickListener { activity.showAuthenticationScreen() }
+        binding.fab.setOnClickListener { activity.showAuthenticationScreen() }
 
         if (savedInstanceState == null) {
             childFragmentManager.beginTransaction()
                     .replace(R.id.container, createChildFragment())
                     .commit()
         }
+
+        return binding.root
     }
 
     abstract fun createChildFragment(): Fragment
diff --git a/app/src/main/java/io/timelimit/android/ui/homescreen/HomescreenActivity.kt b/app/src/main/java/io/timelimit/android/ui/homescreen/HomescreenActivity.kt
index 09a7399..9d77f6d 100644
--- a/app/src/main/java/io/timelimit/android/ui/homescreen/HomescreenActivity.kt
+++ b/app/src/main/java/io/timelimit/android/ui/homescreen/HomescreenActivity.kt
@@ -1,5 +1,5 @@
 /*
- * TimeLimit Copyright <C> 2019 - 2020 Jonas Lochmann
+ * TimeLimit Copyright <C> 2019 - 2021 Jonas Lochmann
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -26,8 +26,8 @@ import androidx.appcompat.app.AppCompatActivity
 import androidx.lifecycle.Observer
 import androidx.lifecycle.ViewModelProvider
 import io.timelimit.android.R
+import io.timelimit.android.databinding.ActivityHomescreenBinding
 import io.timelimit.android.databinding.ActivityHomescreenItemBinding
-import kotlinx.android.synthetic.main.activity_homescreen.*
 
 class HomescreenActivity: AppCompatActivity() {
     companion object {
@@ -35,11 +35,13 @@ class HomescreenActivity: AppCompatActivity() {
     }
 
     private val model: HomescreenModel by lazy { ViewModelProvider(this).get(HomescreenModel::class.java) }
+    private lateinit var binding: ActivityHomescreenBinding
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
 
-        setContentView(R.layout.activity_homescreen)
+        binding = ActivityHomescreenBinding.inflate(layoutInflater)
+        setContentView(binding.root)
 
         model.handleLaunchIfNotYetExecuted(intent.getBooleanExtra(FORCE_SELECTION, false))
 
@@ -80,14 +82,14 @@ class HomescreenActivity: AppCompatActivity() {
     }
 
     private fun initOptionList() {
-        maincard.visibility = View.VISIBLE
+        binding.maincard.visibility = View.VISIBLE
 
         val options = HomescreenUtil.launcherOptions(this)
 
-        launcher_options.removeAllViews()
+        binding.launcherOptions.removeAllViews()
 
         options.forEach { option ->
-            val view = ActivityHomescreenItemBinding.inflate(LayoutInflater.from(this), launcher_options, true)
+            val view = ActivityHomescreenItemBinding.inflate(LayoutInflater.from(this), binding.launcherOptions, true)
 
             view.label = try {
                 packageManager.getApplicationLabel(
@@ -119,18 +121,18 @@ class HomescreenActivity: AppCompatActivity() {
     }
 
     private fun hideOptionList() {
-        maincard.visibility = View.GONE
+        binding.maincard.visibility = View.GONE
 
-        launcher_options.removeAllViews()
+        binding.launcherOptions.removeAllViews()
     }
 
     private fun showProgress(progresss: Int) {
-        progress_card.visibility = View.VISIBLE
-        progress_bar.progress = progresss
+        binding.progressCard.visibility = View.VISIBLE
+        binding.progressBar.progress = progresss
     }
 
     private fun hideProgress() {
-        progress_card.visibility = View.GONE
+        binding.progressCard.visibility = View.GONE
     }
 
     override fun onResume() {
diff --git a/app/src/main/java/io/timelimit/android/ui/lock/LockActivity.kt b/app/src/main/java/io/timelimit/android/ui/lock/LockActivity.kt
index b8b4148..aa79d11 100644
--- a/app/src/main/java/io/timelimit/android/ui/lock/LockActivity.kt
+++ b/app/src/main/java/io/timelimit/android/ui/lock/LockActivity.kt
@@ -25,6 +25,7 @@ import androidx.appcompat.app.AppCompatActivity
 import androidx.lifecycle.MutableLiveData
 import androidx.viewpager.widget.ViewPager
 import io.timelimit.android.R
+import io.timelimit.android.databinding.LockActivityBinding
 import io.timelimit.android.extensions.showSafe
 import io.timelimit.android.logic.BlockingReason
 import io.timelimit.android.logic.DefaultAppLogic
@@ -36,7 +37,6 @@ import io.timelimit.android.ui.main.ActivityViewModelHolder
 import io.timelimit.android.ui.main.AuthenticationFab
 import io.timelimit.android.ui.manage.child.primarydevice.UpdatePrimaryDeviceDialogFragment
 import io.timelimit.android.ui.util.SyncStatusModel
-import kotlinx.android.synthetic.main.lock_activity.*
 
 class LockActivity : AppCompatActivity(), ActivityViewModelHolder {
     companion object {
@@ -88,7 +88,8 @@ class LockActivity : AppCompatActivity(), ActivityViewModelHolder {
 
         val adapter = LockActivityAdapter(supportFragmentManager, this)
 
-        setContentView(R.layout.lock_activity)
+        val binding = LockActivityBinding.inflate(layoutInflater)
+        setContentView(binding.root)
 
         syncModel.statusText.observe(this) { supportActionBar?.subtitle = it }
 
@@ -96,7 +97,7 @@ class LockActivity : AppCompatActivity(), ActivityViewModelHolder {
 
         model.init(blockedPackageName, blockedActivityName)
 
-        pager.adapter = adapter
+        binding.pager.adapter = adapter
 
         model.content.observe(this) {
             if (isResumed && it is LockscreenContent.Blocked.BlockedCategory && it.reason == BlockingReason.RequiresCurrentDevice && !model.didOpenSetCurrentDeviceScreen) {
@@ -109,16 +110,16 @@ class LockActivity : AppCompatActivity(), ActivityViewModelHolder {
         }
 
         AuthenticationFab.manageAuthenticationFab(
-                fab = fab,
+                fab = binding.fab,
                 shouldHighlight = activityModel.shouldHighlightAuthenticationButton,
                 authenticatedUser = activityModel.authenticatedUser,
                 activity = this,
                 doesSupportAuth = showAuth
         )
 
-        fab.setOnClickListener { showAuthenticationScreen() }
+        binding.fab.setOnClickListener { showAuthenticationScreen() }
 
-        pager.addOnPageChangeListener(object: ViewPager.SimpleOnPageChangeListener() {
+        binding.pager.addOnPageChangeListener(object: ViewPager.SimpleOnPageChangeListener() {
             override fun onPageSelected(position: Int) {
                 super.onPageSelected(position)
 
@@ -126,7 +127,7 @@ class LockActivity : AppCompatActivity(), ActivityViewModelHolder {
             }
         })
 
-        tabs.setupWithViewPager(pager)
+        binding.tabs.setupWithViewPager(binding.pager)
 
         model.content.observe(this) {
             val isTimeOver = it is LockscreenContent.Blocked.BlockedCategory && it.blockingHandling.activityBlockingReason == BlockingReason.TimeOver
diff --git a/app/src/main/java/io/timelimit/android/ui/lock/LockTaskFragment.kt b/app/src/main/java/io/timelimit/android/ui/lock/LockTaskFragment.kt
index 6201e92..a7658d9 100644
--- a/app/src/main/java/io/timelimit/android/ui/lock/LockTaskFragment.kt
+++ b/app/src/main/java/io/timelimit/android/ui/lock/LockTaskFragment.kt
@@ -1,5 +1,5 @@
 /*
- * TimeLimit Copyright <C> 2019 - 2020 Jonas Lochmann
+ * TimeLimit Copyright <C> 2019 - 2021 Jonas Lochmann
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -23,25 +23,19 @@ import android.view.ViewGroup
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.activityViewModels
 import androidx.recyclerview.widget.LinearLayoutManager
-import io.timelimit.android.R
 import io.timelimit.android.data.model.ChildTask
+import io.timelimit.android.databinding.RecyclerFragmentBinding
 import io.timelimit.android.ui.manage.child.tasks.ConfirmTaskDialogFragment
-import kotlinx.android.synthetic.main.recycler_fragment.*
 
 class LockTaskFragment: Fragment() {
     private val model: LockModel by activityViewModels()
 
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
-        return inflater.inflate(R.layout.recycler_fragment, container, false)
-    }
-
-    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
-        super.onViewCreated(view, savedInstanceState)
-
+        val binding = RecyclerFragmentBinding.inflate(inflater, container, false)
         val adapter = LockTaskAdapter()
 
-        recycler.layoutManager = LinearLayoutManager(requireContext())
-        recycler.adapter = adapter
+        binding.recycler.layoutManager = LinearLayoutManager(requireContext())
+        binding.recycler.adapter = adapter
 
         model.blockedCategoryTasks.observe(viewLifecycleOwner) { tasks ->
             adapter.content = listOf(LockTaskItem.Introduction) + tasks.map { LockTaskItem.Task(it) }
@@ -55,5 +49,7 @@ class LockTaskFragment: Fragment() {
                     ConfirmTaskDialogFragment.newInstance(taskId = task.taskId, taskTitle = task.taskTitle, fromManageScreen = false).show(parentFragmentManager)
             }
         }
+
+        return binding.root
     }
 }
\ No newline at end of file
diff --git a/app/src/main/java/io/timelimit/android/ui/manage/category/appsandrules/CategoryAppsAndRulesFragment.kt b/app/src/main/java/io/timelimit/android/ui/manage/category/appsandrules/CategoryAppsAndRulesFragment.kt
index 1a5490b..9275525 100644
--- a/app/src/main/java/io/timelimit/android/ui/manage/category/appsandrules/CategoryAppsAndRulesFragment.kt
+++ b/app/src/main/java/io/timelimit/android/ui/manage/category/appsandrules/CategoryAppsAndRulesFragment.kt
@@ -31,6 +31,7 @@ import io.timelimit.android.async.Threads
 import io.timelimit.android.data.Database
 import io.timelimit.android.data.model.HintsToShow
 import io.timelimit.android.data.model.TimeLimitRule
+import io.timelimit.android.databinding.FragmentCategoryAppsAndRulesBinding
 import io.timelimit.android.logic.DefaultAppLogic
 import io.timelimit.android.sync.actions.AddCategoryAppsAction
 import io.timelimit.android.sync.actions.CreateTimeLimitRuleAction
@@ -42,7 +43,6 @@ import io.timelimit.android.ui.manage.category.apps.add.AddCategoryAppsFragment
 import io.timelimit.android.ui.manage.category.timelimit_rules.edit.EditTimeLimitRuleDialogFragment
 import io.timelimit.android.ui.manage.category.timelimit_rules.edit.EditTimeLimitRuleDialogFragmentListener
 import io.timelimit.android.ui.manage.child.apps.assign.AssignAppCategoryDialogFragment
-import kotlinx.android.synthetic.main.fragment_category_apps_and_rules.*
 
 abstract class CategoryAppsAndRulesFragment: Fragment(), Handlers, EditTimeLimitRuleDialogFragmentListener {
     private val adapter = AppAndRuleAdapter().also { it.handlers = this }
@@ -53,16 +53,12 @@ abstract class CategoryAppsAndRulesFragment: Fragment(), Handlers, EditTimeLimit
     abstract val categoryId: String
 
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
-        return inflater.inflate(R.layout.fragment_category_apps_and_rules, container, false)
-    }
-
-    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
-        super.onViewCreated(view, savedInstanceState)
+        val binding = FragmentCategoryAppsAndRulesBinding.inflate(inflater, container, false)
 
         model.init(userId = childId, categoryId = categoryId)
 
-        recycler.layoutManager = LinearLayoutManager(requireContext())
-        recycler.adapter = adapter
+        binding.recycler.layoutManager = LinearLayoutManager(requireContext())
+        binding.recycler.adapter = adapter
 
         model.dateAndUsedTimes.observe(viewLifecycleOwner) { (date, usedTimes) ->
             adapter.date = date
@@ -91,7 +87,9 @@ abstract class CategoryAppsAndRulesFragment: Fragment(), Handlers, EditTimeLimit
                     database.config().setHintsShownSync(HintsToShow.TIME_LIMIT_RULE_INTRODUCTION)
                 }
             }
-        }).attachToRecyclerView(recycler)
+        }).attachToRecyclerView(binding.recycler)
+
+        return binding.root
     }
 
     fun setListContent(items: List<AppAndRuleItem>) { adapter.items = items }
diff --git a/app/src/main/java/io/timelimit/android/ui/manage/category/blocked_times/BlockedTimeAreasFragment.kt b/app/src/main/java/io/timelimit/android/ui/manage/category/blocked_times/BlockedTimeAreasFragment.kt
index a31fad3..4f50cee 100644
--- a/app/src/main/java/io/timelimit/android/ui/manage/category/blocked_times/BlockedTimeAreasFragment.kt
+++ b/app/src/main/java/io/timelimit/android/ui/manage/category/blocked_times/BlockedTimeAreasFragment.kt
@@ -1,5 +1,5 @@
 /*
- * TimeLimit Copyright <C> 2019 - 2020 Jonas Lochmann
+ * TimeLimit Copyright <C> 2019 - 2021 Jonas Lochmann
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -31,6 +31,7 @@ import io.timelimit.android.data.customtypes.ImmutableBitmask
 import io.timelimit.android.data.model.Category
 import io.timelimit.android.data.model.HintsToShow
 import io.timelimit.android.data.model.withConfigCopiedToOtherDates
+import io.timelimit.android.databinding.FragmentBlockedTimeAreasBinding
 import io.timelimit.android.livedata.map
 import io.timelimit.android.livedata.waitForNonNullValue
 import io.timelimit.android.logic.DefaultAppLogic
@@ -38,7 +39,6 @@ import io.timelimit.android.sync.actions.UpdateCategoryBlockedTimesAction
 import io.timelimit.android.ui.main.ActivityViewModel
 import io.timelimit.android.ui.main.getActivityViewModel
 import io.timelimit.android.ui.mustread.MustReadFragment
-import kotlinx.android.synthetic.main.fragment_blocked_time_areas.*
 
 class BlockedTimeAreasFragment : Fragment(), CopyBlockedTimeAreasDialogFragmentListener {
     companion object {
@@ -59,6 +59,7 @@ class BlockedTimeAreasFragment : Fragment(), CopyBlockedTimeAreasDialogFragmentL
     private val items = MutableLiveData<BlockedTimeItems>()
     private val childId: String get() = requireArguments().getString(CHILD_ID)!!
     private val categoryId: String get() = requireArguments().getString(CATEGORY_ID)!!
+    private lateinit var binding: FragmentBlockedTimeAreasBinding
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -82,10 +83,6 @@ class BlockedTimeAreasFragment : Fragment(), CopyBlockedTimeAreasDialogFragmentL
         }
     }
 
-    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
-        return inflater.inflate(R.layout.fragment_blocked_time_areas, container, false)
-    }
-
     fun updateBlockedTimes(oldMask: ImmutableBitmask, newMask: ImmutableBitmask) {
         if (
                 auth.tryDispatchParentAction(
@@ -96,7 +93,7 @@ class BlockedTimeAreasFragment : Fragment(), CopyBlockedTimeAreasDialogFragmentL
                         allowAsChild = true
                 )
         ) {
-            Snackbar.make(coordinator.parent as View, R.string.blocked_time_areas_snackbar_modified, Snackbar.LENGTH_SHORT)
+            Snackbar.make(binding.coordinator.parent as View, R.string.blocked_time_areas_snackbar_modified, Snackbar.LENGTH_SHORT)
                     .also {
                         if (auth.isParentAuthenticated()) {
                             it.setAction(R.string.generic_undo) {
@@ -119,29 +116,29 @@ class BlockedTimeAreasFragment : Fragment(), CopyBlockedTimeAreasDialogFragmentL
         }
     }
 
-    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
-        super.onViewCreated(view, savedInstanceState)
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
+        binding = FragmentBlockedTimeAreasBinding.inflate(inflater, container, false)
 
-        btn_help.setOnClickListener {
+        binding.btnHelp.setOnClickListener {
             BlockedTimeAreasHelpDialog().show(parentFragmentManager)
         }
 
-        btn_copy_to_other_days.setOnClickListener {
+        binding.btnCopyToOtherDays.setOnClickListener {
             if (auth.requestAuthenticationOrReturnTrue()) {
                 CopyBlockedTimeAreasDialogFragment.newInstance(this@BlockedTimeAreasFragment).show(parentFragmentManager)
             }
         }
 
         BlockedTimeAreasLogic.init(
-                recycler = recycler,
-                daySpinner = spinner_day,
-                detailedModeCheckbox = detailed_mode,
+                recycler = binding.recycler,
+                daySpinner = binding.spinnerDay,
+                detailedModeCheckbox = binding.detailedMode,
                 checkAuthentication = {
                     if (auth.isParentAuthenticated()) {
                         BlockedTimeAreasLogic.Authentication.FullyAvailable
                     } else if (auth.isParentOrChildAuthenticated(childId = childId)) {
                         BlockedTimeAreasLogic.Authentication.OnlyAllowAddingLimits(
-                                showHintHook = { Snackbar.make(coordinator.parent as View, R.string.blocked_time_areas_snackbar_child_hint, Snackbar.LENGTH_LONG).show() },
+                                showHintHook = { Snackbar.make(binding.coordinator.parent as View, R.string.blocked_time_areas_snackbar_child_hint, Snackbar.LENGTH_LONG).show() },
                                 showErrorHook = { auth.requestAuthentication() }
                         )
                     } else {
@@ -154,5 +151,7 @@ class BlockedTimeAreasFragment : Fragment(), CopyBlockedTimeAreasDialogFragmentL
                 currentData = category.map { it?.blockedMinutesInWeek },
                 lifecycleOwner = this
         )
+
+        return binding.root
     }
 }
diff --git a/app/src/main/java/io/timelimit/android/ui/manage/child/ManageChildFragment.kt b/app/src/main/java/io/timelimit/android/ui/manage/child/ManageChildFragment.kt
index d6de291..5f8788f 100644
--- a/app/src/main/java/io/timelimit/android/ui/manage/child/ManageChildFragment.kt
+++ b/app/src/main/java/io/timelimit/android/ui/manage/child/ManageChildFragment.kt
@@ -1,5 +1,5 @@
 /*
- * TimeLimit Copyright <C> 2019 - 2020 Jonas Lochmann
+ * TimeLimit Copyright <C> 2019 - 2021 Jonas Lochmann
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -28,7 +28,6 @@ import io.timelimit.android.livedata.map
 import io.timelimit.android.ui.fragment.ChildFragmentWrapper
 import io.timelimit.android.ui.main.FragmentWithCustomTitle
 import io.timelimit.android.ui.manage.child.category.ManageChildCategoriesFragment
-import kotlinx.android.synthetic.main.single_fragment_wrapper.*
 
 class ManageChildFragment : ChildFragmentWrapper(), FragmentWithCustomTitle {
     private val params: ManageChildFragmentArgs by lazy { ManageChildFragmentArgs.fromBundle(arguments!!) }
@@ -46,7 +45,7 @@ class ManageChildFragment : ChildFragmentWrapper(), FragmentWithCustomTitle {
         super.onViewCreated(view, savedInstanceState)
 
         if (savedInstanceState == null && params.fromRedirect) {
-            Snackbar.make(coordinator, R.string.manage_child_redirected_toast, Snackbar.LENGTH_LONG).show()
+            Snackbar.make(binding.coordinator, R.string.manage_child_redirected_toast, Snackbar.LENGTH_LONG).show()
         }
     }
 
diff --git a/app/src/main/java/io/timelimit/android/ui/manage/child/category/ManageChildCategoriesFragment.kt b/app/src/main/java/io/timelimit/android/ui/manage/child/category/ManageChildCategoriesFragment.kt
index b7107bd..fe5f439 100644
--- a/app/src/main/java/io/timelimit/android/ui/manage/child/category/ManageChildCategoriesFragment.kt
+++ b/app/src/main/java/io/timelimit/android/ui/manage/child/category/ManageChildCategoriesFragment.kt
@@ -1,5 +1,5 @@
 /*
- * TimeLimit Copyright <C> 2019 - 2020 Jonas Lochmann
+ * TimeLimit Copyright <C> 2019 - 2021 Jonas Lochmann
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -30,6 +30,7 @@ import io.timelimit.android.R
 import io.timelimit.android.async.Threads
 import io.timelimit.android.data.model.Category
 import io.timelimit.android.data.model.HintsToShow
+import io.timelimit.android.databinding.RecyclerFragmentBinding
 import io.timelimit.android.extensions.safeNavigate
 import io.timelimit.android.logic.AppLogic
 import io.timelimit.android.logic.DefaultAppLogic
@@ -42,7 +43,6 @@ import io.timelimit.android.ui.manage.child.ManageChildFragmentArgs
 import io.timelimit.android.ui.manage.child.ManageChildFragmentDirections
 import io.timelimit.android.ui.manage.child.category.create.CreateCategoryDialogFragment
 import io.timelimit.android.ui.manage.child.category.specialmode.SetCategorySpecialModeFragment
-import kotlinx.android.synthetic.main.recycler_fragment.*
 
 class ManageChildCategoriesFragment : Fragment() {
     companion object {
@@ -55,9 +55,12 @@ class ManageChildCategoriesFragment : Fragment() {
     private val auth: ActivityViewModel by lazy { getActivityViewModel(requireActivity()) }
     private val logic: AppLogic by lazy { DefaultAppLogic.with(requireContext()) }
     private val model: ManageChildCategoriesModel by viewModels()
+    private lateinit var binding: RecyclerFragmentBinding
 
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
-        return inflater.inflate(R.layout.recycler_fragment, container, false)
+        binding = RecyclerFragmentBinding.inflate(inflater, container, false)
+
+        return binding.root
     }
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
@@ -134,8 +137,8 @@ class ManageChildCategoriesFragment : Fragment() {
             }
         }
 
-        recycler.adapter = adapter
-        recycler.layoutManager = LinearLayoutManager(context)
+        binding.recycler.adapter = adapter
+        binding.recycler.layoutManager = LinearLayoutManager(context)
 
         model.init(params.childId)
         model.listContent.observe(viewLifecycleOwner, Observer { adapter.categories = it })
@@ -199,6 +202,6 @@ class ManageChildCategoriesFragment : Fragment() {
                     database.config().setHintsShownSync(HintsToShow.CATEGORIES_INTRODUCTION)
                 }
             }
-        }).attachToRecyclerView(recycler)
+        }).attachToRecyclerView(binding.recycler)
     }
 }
diff --git a/app/src/main/java/io/timelimit/android/ui/manage/child/tasks/ManageChildTasksFragment.kt b/app/src/main/java/io/timelimit/android/ui/manage/child/tasks/ManageChildTasksFragment.kt
index e7ea8d0..c225fbe 100644
--- a/app/src/main/java/io/timelimit/android/ui/manage/child/tasks/ManageChildTasksFragment.kt
+++ b/app/src/main/java/io/timelimit/android/ui/manage/child/tasks/ManageChildTasksFragment.kt
@@ -1,5 +1,5 @@
 /*
- * TimeLimit Copyright <C> 2019 - 2020 Jonas Lochmann
+ * TimeLimit Copyright <C> 2019 - 2021 Jonas Lochmann
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -28,9 +28,9 @@ import androidx.recyclerview.widget.RecyclerView
 import com.google.android.material.snackbar.Snackbar
 import io.timelimit.android.R
 import io.timelimit.android.data.model.ChildTask
+import io.timelimit.android.databinding.RecyclerFragmentBinding
 import io.timelimit.android.sync.actions.UpdateChildTaskAction
 import io.timelimit.android.ui.main.getActivityViewModel
-import kotlinx.android.synthetic.main.recycler_fragment.*
 
 class ManageChildTasksFragment: Fragment(), EditTaskDialogFragment.Listener {
     companion object {
@@ -54,16 +54,11 @@ class ManageChildTasksFragment: Fragment(), EditTaskDialogFragment.Listener {
     }
 
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
-        return inflater.inflate(R.layout.recycler_fragment, container, false)
-    }
-
-    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
-        super.onViewCreated(view, savedInstanceState)
-
+        val binding = RecyclerFragmentBinding.inflate(inflater, container, false)
         val adapter = ChildTaskAdapter()
 
-        recycler.layoutManager = LinearLayoutManager(requireContext())
-        recycler.adapter = adapter
+        binding.recycler.layoutManager = LinearLayoutManager(requireContext())
+        binding.recycler.adapter = adapter
 
         model.listContent.observe(viewLifecycleOwner) { adapter.data = it }
         model.isChildTheCurrentDeviceUser.observe(viewLifecycleOwner) {/* keep the value fresh */}
@@ -100,7 +95,9 @@ class ManageChildTasksFragment: Fragment(), EditTaskDialogFragment.Listener {
 
             override fun onSwiped(viewHolder: RecyclerView.ViewHolder, direction: Int) { model.hideIntro() }
             override fun onMove(recyclerView: RecyclerView, viewHolder: RecyclerView.ViewHolder, target: RecyclerView.ViewHolder): Boolean = throw IllegalStateException()
-        }).attachToRecyclerView(recycler)
+        }).attachToRecyclerView(binding.recycler)
+
+        return binding.root
     }
 
     override fun onTaskRemoved(task: ChildTask) {
diff --git a/app/src/main/java/io/timelimit/android/ui/manipulation/AnnoyActivity.kt b/app/src/main/java/io/timelimit/android/ui/manipulation/AnnoyActivity.kt
index 25f0d95..1aedd29 100644
--- a/app/src/main/java/io/timelimit/android/ui/manipulation/AnnoyActivity.kt
+++ b/app/src/main/java/io/timelimit/android/ui/manipulation/AnnoyActivity.kt
@@ -1,5 +1,5 @@
 /*
- * TimeLimit Copyright <C> 2019 Jonas Lochmann
+ * TimeLimit Copyright <C> 2019 - 2021 Jonas Lochmann
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -24,12 +24,12 @@ import androidx.appcompat.app.AppCompatActivity
 import androidx.lifecycle.Observer
 import androidx.lifecycle.ViewModelProviders
 import io.timelimit.android.R
+import io.timelimit.android.databinding.AnnoyActivityBinding
 import io.timelimit.android.livedata.map
 import io.timelimit.android.logic.DefaultAppLogic
 import io.timelimit.android.ui.manage.device.manage.ManipulationWarningTypeLabel
 import io.timelimit.android.ui.manage.device.manage.ManipulationWarnings
 import io.timelimit.android.util.TimeTextUtil
-import kotlinx.android.synthetic.main.annoy_activity.*
 
 class AnnoyActivity : AppCompatActivity() {
     companion object {
@@ -53,7 +53,8 @@ class AnnoyActivity : AppCompatActivity() {
         val model = ViewModelProviders.of(this).get(AnnoyModel::class.java)
         val logic = DefaultAppLogic.with(this)
 
-        setContentView(R.layout.annoy_activity)
+        val binding = AnnoyActivityBinding.inflate(layoutInflater)
+        setContentView(binding.root)
 
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
             if (logic.platformIntegration.setLockTaskPackages(listOf(packageName))) {
@@ -67,7 +68,7 @@ class AnnoyActivity : AppCompatActivity() {
                 shutdown()
             }
 
-            annoy_timer.setText(
+            binding.annoyTimer.setText(
                     getString(R.string.annoy_timer, TimeTextUtil.seconds(it.toInt(), this@AnnoyActivity))
             )
         })
@@ -86,10 +87,10 @@ class AnnoyActivity : AppCompatActivity() {
             }
         }.observe(this, Observer {
             if (it.isNullOrEmpty()) {
-                annoy_reason.visibility = View.GONE
+                binding.annoyReason.visibility = View.GONE
             } else {
-                annoy_reason.visibility = View.VISIBLE
-                annoy_reason.setText(it)
+                binding.annoyReason.visibility = View.VISIBLE
+                binding.annoyReason.setText(it)
             }
         })
     }
diff --git a/app/src/main/java/io/timelimit/android/ui/manipulation/UnlockAfterManipulationActivity.kt b/app/src/main/java/io/timelimit/android/ui/manipulation/UnlockAfterManipulationActivity.kt
index c8ba5aa..f8a3198 100644
--- a/app/src/main/java/io/timelimit/android/ui/manipulation/UnlockAfterManipulationActivity.kt
+++ b/app/src/main/java/io/timelimit/android/ui/manipulation/UnlockAfterManipulationActivity.kt
@@ -1,5 +1,5 @@
 /*
- * TimeLimit Copyright <C> 2019 Jonas Lochmann
+ * TimeLimit Copyright <C> 2019 - 2021 Jonas Lochmann
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -21,16 +21,15 @@ import android.view.WindowManager
 import androidx.appcompat.app.AppCompatActivity
 import androidx.lifecycle.Observer
 import androidx.lifecycle.ViewModelProviders
-import io.timelimit.android.R
 import io.timelimit.android.async.Threads
 import io.timelimit.android.data.model.UserType
+import io.timelimit.android.databinding.ActivityUnlockAfterManipulationBinding
 import io.timelimit.android.extensions.showSafe
 import io.timelimit.android.logic.DefaultAppLogic
 import io.timelimit.android.ui.backdoor.BackdoorDialogFragment
 import io.timelimit.android.ui.login.NewLoginFragment
 import io.timelimit.android.ui.main.ActivityViewModel
 import io.timelimit.android.ui.main.ActivityViewModelHolder
-import kotlinx.android.synthetic.main.activity_unlock_after_manipulation.*
 
 class UnlockAfterManipulationActivity : AppCompatActivity(), ActivityViewModelHolder {
     private val model: ActivityViewModel by lazy {
@@ -42,7 +41,9 @@ class UnlockAfterManipulationActivity : AppCompatActivity(), ActivityViewModelHo
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_unlock_after_manipulation)
+
+        val binding = ActivityUnlockAfterManipulationBinding.inflate(layoutInflater)
+        setContentView(binding.root)
 
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
             startLockTask()
@@ -74,8 +75,8 @@ class UnlockAfterManipulationActivity : AppCompatActivity(), ActivityViewModelHo
             }
         })
 
-        auth_btn.setOnClickListener { showAuthenticationScreen() }
-        use_backdoor.setOnClickListener { BackdoorDialogFragment().show(supportFragmentManager) }
+        binding.authBtn.setOnClickListener { showAuthenticationScreen() }
+        binding.useBackdoor.setOnClickListener { BackdoorDialogFragment().show(supportFragmentManager) }
     }
 
     override fun showAuthenticationScreen() {
diff --git a/app/src/main/java/io/timelimit/android/ui/overview/overview/OverviewFragment.kt b/app/src/main/java/io/timelimit/android/ui/overview/overview/OverviewFragment.kt
index d198bd3..852a347 100644
--- a/app/src/main/java/io/timelimit/android/ui/overview/overview/OverviewFragment.kt
+++ b/app/src/main/java/io/timelimit/android/ui/overview/overview/OverviewFragment.kt
@@ -1,5 +1,5 @@
 /*
- * TimeLimit Copyright <C> 2019 - 2020 Jonas Lochmann
+ * TimeLimit Copyright <C> 2019 - 2021 Jonas Lochmann
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -23,10 +23,10 @@ import androidx.fragment.app.viewModels
 import androidx.recyclerview.widget.ItemTouchHelper
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
-import io.timelimit.android.R
 import io.timelimit.android.async.Threads
 import io.timelimit.android.coroutines.CoroutineFragment
 import io.timelimit.android.data.model.*
+import io.timelimit.android.databinding.FragmentOverviewBinding
 import io.timelimit.android.livedata.waitForNonNullValue
 import io.timelimit.android.logic.AppLogic
 import io.timelimit.android.logic.DefaultAppLogic
@@ -34,7 +34,6 @@ import io.timelimit.android.sync.actions.ReviewChildTaskAction
 import io.timelimit.android.ui.main.ActivityViewModel
 import io.timelimit.android.ui.main.getActivityViewModel
 import io.timelimit.android.ui.payment.RequiresPurchaseDialogFragment
-import kotlinx.android.synthetic.main.fragment_overview.*
 import kotlinx.coroutines.launch
 
 class OverviewFragment : CoroutineFragment() {
@@ -44,16 +43,11 @@ class OverviewFragment : CoroutineFragment() {
     private val model: OverviewFragmentModel by viewModels()
 
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
-        return inflater.inflate(R.layout.fragment_overview, container, false)
-    }
-
-    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
-        super.onViewCreated(view, savedInstanceState)
-
+        val binding = FragmentOverviewBinding.inflate(inflater, container, false)
         val adapter = OverviewFragmentAdapter()
 
-        recycler.adapter = adapter
-        recycler.layoutManager = LinearLayoutManager(requireContext())
+        binding.recycler.adapter = adapter
+        binding.recycler.layoutManager = LinearLayoutManager(requireContext())
 
         adapter.handlers = object: OverviewFragmentHandlers {
             override fun onAddUserClicked() {
@@ -155,7 +149,9 @@ class OverviewFragment : CoroutineFragment() {
                         }
                     }
                 }
-        ).attachToRecyclerView(recycler)
+        ).attachToRecyclerView(binding.recycler)
+
+        return binding.root
     }
 }
 
diff --git a/app/src/main/java/io/timelimit/android/ui/overview/overview/OverviewItemVisibility.kt b/app/src/main/java/io/timelimit/android/ui/overview/overview/OverviewItemVisibility.kt
index f43889d..0f98f97 100644
--- a/app/src/main/java/io/timelimit/android/ui/overview/overview/OverviewItemVisibility.kt
+++ b/app/src/main/java/io/timelimit/android/ui/overview/overview/OverviewItemVisibility.kt
@@ -1,5 +1,5 @@
 /*
- * TimeLimit Copyright <C> 2019 - 2020 Jonas Lochmann
+ * TimeLimit Copyright <C> 2019 - 2021 Jonas Lochmann
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -16,7 +16,7 @@
 package io.timelimit.android.ui.overview.overview
 
 import android.os.Parcelable
-import kotlinx.android.parcel.Parcelize
+import kotlinx.parcelize.Parcelize
 
 @Parcelize
 data class OverviewItemVisibility(
diff --git a/app/src/main/java/io/timelimit/android/ui/overview/uninstall/UninstallFragment.kt b/app/src/main/java/io/timelimit/android/ui/overview/uninstall/UninstallFragment.kt
index 6f32803..1637e19 100644
--- a/app/src/main/java/io/timelimit/android/ui/overview/uninstall/UninstallFragment.kt
+++ b/app/src/main/java/io/timelimit/android/ui/overview/uninstall/UninstallFragment.kt
@@ -34,7 +34,6 @@ import io.timelimit.android.ui.main.ActivityViewModel
 import io.timelimit.android.ui.main.ActivityViewModelHolder
 import io.timelimit.android.ui.main.AuthenticationFab
 import io.timelimit.android.ui.main.FragmentWithCustomTitle
-import kotlinx.android.synthetic.main.single_fragment_wrapper.*
 
 class UninstallFragment : Fragment(), FragmentWithCustomTitle {
     companion object {
@@ -79,21 +78,17 @@ class UninstallFragment : Fragment(), FragmentWithCustomTitle {
             if (it == null) { navigation.popBackStack() }
         }
 
-        return binding.root
-    }
-
-    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
-        super.onViewCreated(view, savedInstanceState)
-
         AuthenticationFab.manageAuthenticationFab(
-                fab = fab,
+                fab = binding.fab,
                 fragment = this,
                 shouldHighlight = activity.getActivityViewModel().shouldHighlightAuthenticationButton,
                 authenticatedUser = activity.getActivityViewModel().authenticatedUser,
                 doesSupportAuth = liveDataFromNonNullValue(!BuildConfig.storeCompilant)
         )
 
-        fab.setOnClickListener { activity.showAuthenticationScreen() }
+        binding.fab.setOnClickListener { activity.showAuthenticationScreen() }
+
+        return binding.root
     }
 
     override fun onSaveInstanceState(outState: Bundle) {
diff --git a/app/src/main/java/io/timelimit/android/ui/parentmode/ParentModeFragment.kt b/app/src/main/java/io/timelimit/android/ui/parentmode/ParentModeFragment.kt
index 7bac651..d743a8c 100644
--- a/app/src/main/java/io/timelimit/android/ui/parentmode/ParentModeFragment.kt
+++ b/app/src/main/java/io/timelimit/android/ui/parentmode/ParentModeFragment.kt
@@ -1,5 +1,5 @@
 /*
- * TimeLimit Copyright <C> 2019 - 2020 Jonas Lochmann
+ * TimeLimit Copyright <C> 2019 - 2021 Jonas Lochmann
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -22,16 +22,12 @@ import android.view.ViewGroup
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.FragmentTransaction
 import io.timelimit.android.R
+import io.timelimit.android.databinding.ParentModeFragmentBinding
 import io.timelimit.android.ui.overview.about.AboutFragment
-import kotlinx.android.synthetic.main.parent_mode_fragment.*
 
 class ParentModeFragment : Fragment() {
-    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
-        return inflater.inflate(R.layout.parent_mode_fragment, container, false)
-    }
-
-    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
-        super.onViewCreated(view, savedInstanceState)
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {
+        val binding = ParentModeFragmentBinding.inflate(inflater, container, false)
 
         if (savedInstanceState == null) {
             childFragmentManager.beginTransaction()
@@ -39,7 +35,7 @@ class ParentModeFragment : Fragment() {
                     .commitNow()
         }
 
-        bottom_navigation_view.setOnNavigationItemSelectedListener { menuItem ->
+        binding.bottomNavigationView.setOnNavigationItemSelectedListener { menuItem ->
             if (childFragmentManager.isStateSaved) {
                 false
             } else {
@@ -56,5 +52,7 @@ class ParentModeFragment : Fragment() {
                 true
             }
         }
+
+        return binding.root
     }
 }
\ No newline at end of file
diff --git a/app/src/main/java/io/timelimit/android/ui/setup/SetupLocalModeFragment.kt b/app/src/main/java/io/timelimit/android/ui/setup/SetupLocalModeFragment.kt
index 53c8c9a..cdf8f86 100644
--- a/app/src/main/java/io/timelimit/android/ui/setup/SetupLocalModeFragment.kt
+++ b/app/src/main/java/io/timelimit/android/ui/setup/SetupLocalModeFragment.kt
@@ -1,5 +1,5 @@
 /*
- * TimeLimit Copyright <C> 2019 - 2020 Jonas Lochmann
+ * TimeLimit Copyright <C> 2019 - 2021 Jonas Lochmann
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -38,7 +38,6 @@ import io.timelimit.android.logic.DefaultAppLogic
 import io.timelimit.android.ui.mustread.MustReadFragment
 import io.timelimit.android.ui.update.UpdateConsentCard
 import io.timelimit.android.update.UpdateUtil
-import kotlinx.android.synthetic.main.fragment_setup_local_mode.*
 
 class SetupLocalModeFragment : Fragment() {
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
@@ -69,7 +68,7 @@ class SetupLocalModeFragment : Fragment() {
 
         binding.nextBtn.setOnClickListener {
             model.trySetupWithPassword(
-                    set_password_view.readPassword(),
+                    binding.setPasswordView.readPassword(),
                     SetupNetworkTimeVerification.readSelection(binding.networkTimeVerification),
                     enableUpdateChecks = binding.update.enableSwitch.isChecked
             )
diff --git a/app/src/main/java/io/timelimit/android/ui/setup/SetupSelectModeFragment.kt b/app/src/main/java/io/timelimit/android/ui/setup/SetupSelectModeFragment.kt
index 082a5b5..c0694a7 100644
--- a/app/src/main/java/io/timelimit/android/ui/setup/SetupSelectModeFragment.kt
+++ b/app/src/main/java/io/timelimit/android/ui/setup/SetupSelectModeFragment.kt
@@ -1,5 +1,5 @@
 /*
- * TimeLimit Copyright <C> 2019 Jonas Lochmann
+ * TimeLimit Copyright <C> 2019 - 2021 Jonas Lochmann
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -34,7 +34,6 @@ import io.timelimit.android.extensions.safeNavigate
 import io.timelimit.android.logic.DefaultAppLogic
 import io.timelimit.android.ui.setup.parentmode.SetupParentmodeDialogFragment
 import io.timelimit.android.ui.setup.privacy.PrivacyInfoDialogFragment
-import kotlinx.android.synthetic.main.fragment_setup_select_mode.*
 
 class SetupSelectModeFragment : Fragment() {
     companion object {
@@ -44,9 +43,10 @@ class SetupSelectModeFragment : Fragment() {
     }
 
     private lateinit var navigation: NavController
+    private lateinit var binding: FragmentSetupSelectModeBinding
 
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
-        val binding = FragmentSetupSelectModeBinding.inflate(inflater, container, false)
+        binding = FragmentSetupSelectModeBinding.inflate(inflater, container, false)
 
         return binding.root
     }
@@ -56,43 +56,43 @@ class SetupSelectModeFragment : Fragment() {
 
         navigation = Navigation.findNavController(view)
 
-        btn_local_mode.setOnClickListener {
+        binding.btnLocalMode.setOnClickListener {
             navigation.safeNavigate(
                     SetupSelectModeFragmentDirections.actionSetupSelectModeFragmentToSetupDevicePermissionsFragment(),
                     R.id.setupSelectModeFragment
             )
         }
 
-        btn_parent_mode.setOnClickListener {
+        binding.btnParentMode.setOnClickListener {
             PrivacyInfoDialogFragment().apply {
                 setTargetFragment(this@SetupSelectModeFragment, REQ_SETUP_CONNECTED_PARENT)
-            }.show(fragmentManager!!)
+            }.show(parentFragmentManager)
         }
 
-        btn_network_child_mode.setOnClickListener {
+        binding.btnNetworkChildMode.setOnClickListener {
             PrivacyInfoDialogFragment().apply {
                 setTargetFragment(this@SetupSelectModeFragment, REQ_SETUP_CONNECTED_CHILD)
-            }.show(fragmentManager!!)
+            }.show(parentFragmentManager)
         }
 
-        btn_parent_key_mode.setOnClickListener {
+        binding.btnParentKeyMode.setOnClickListener {
             SetupParentmodeDialogFragment().apply {
                 setTargetFragment(this@SetupSelectModeFragment, REQUEST_SETUP_PARENT_MODE)
             }.show(parentFragmentManager)
         }
 
-        btn_uninstall.setOnClickListener {
-            DefaultAppLogic.with(context!!).platformIntegration.disableDeviceAdmin()
+        binding.btnUninstall.setOnClickListener {
+            DefaultAppLogic.with(requireContext()).platformIntegration.disableDeviceAdmin()
 
             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
                 startActivity(
-                        Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS, Uri.parse("package:${context!!.packageName}"))
+                        Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS, Uri.parse("package:${requireContext().packageName}"))
                                 .addCategory(Intent.CATEGORY_DEFAULT)
                                 .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
                 )
             } else {
                 startActivity(
-                        Intent(Intent.ACTION_UNINSTALL_PACKAGE, Uri.parse("package:${context!!.packageName}"))
+                        Intent(Intent.ACTION_UNINSTALL_PACKAGE, Uri.parse("package:${requireContext().packageName}"))
                 )
             }
         }