diff --git a/admob/app/build.gradle b/admob/app/build.gradle
index 2a63e7091..b1d58257d 100644
--- a/admob/app/build.gradle
+++ b/admob/app/build.gradle
@@ -1,6 +1,5 @@
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
-apply plugin: 'kotlin-android-extensions'
 
 android {
     compileSdkVersion 30
diff --git a/analytics/app/build.gradle b/analytics/app/build.gradle
index 598f07670..7710520d7 100644
--- a/analytics/app/build.gradle
+++ b/analytics/app/build.gradle
@@ -1,6 +1,5 @@
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
-apply plugin: 'kotlin-android-extensions'
 
 android {
     compileSdkVersion 30
diff --git a/appindexing/app/build.gradle b/appindexing/app/build.gradle
index 5abe7883a..c57badc11 100644
--- a/appindexing/app/build.gradle
+++ b/appindexing/app/build.gradle
@@ -1,6 +1,5 @@
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
-apply plugin: 'kotlin-android-extensions'
 
 android {
     compileSdkVersion 30
diff --git a/auth/app/build.gradle b/auth/app/build.gradle
index 9a118e71e..5758fe9c3 100644
--- a/auth/app/build.gradle
+++ b/auth/app/build.gradle
@@ -1,6 +1,5 @@
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
-apply plugin: 'kotlin-android-extensions'
 
 android {
     compileSdkVersion 30
diff --git a/crashlytics/app/build.gradle b/crashlytics/app/build.gradle
index 217ccfd57..54b136f01 100644
--- a/crashlytics/app/build.gradle
+++ b/crashlytics/app/build.gradle
@@ -1,6 +1,5 @@
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
-apply plugin: 'kotlin-android-extensions'
 
 android {
     compileSdkVersion 30
diff --git a/database/app/build.gradle b/database/app/build.gradle
index 972618c6b..e106f84f9 100644
--- a/database/app/build.gradle
+++ b/database/app/build.gradle
@@ -1,6 +1,5 @@
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
-apply plugin: 'kotlin-android-extensions'
 
 android {
     compileSdkVersion 30
diff --git a/dl-invites/app/build.gradle b/dl-invites/app/build.gradle
index 97deb6a6a..23faf5b61 100644
--- a/dl-invites/app/build.gradle
+++ b/dl-invites/app/build.gradle
@@ -1,6 +1,5 @@
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
-apply plugin: 'kotlin-android-extensions'
 
 android {
     compileSdkVersion 30
@@ -21,10 +20,6 @@ android {
     }
 }
 
-androidExtensions {
-    experimental = true
-}
-
 dependencies {
     implementation 'androidx.legacy:legacy-support-v4:1.0.0'
     implementation 'androidx.appcompat:appcompat:1.3.0'
diff --git a/dl-invites/app/src/main/java/com/google/firebase/dynamicinvites/kotlin/view/AdvancedActivity.kt b/dl-invites/app/src/main/java/com/google/firebase/dynamicinvites/kotlin/view/AdvancedActivity.kt
index 8208ab8d5..18bbb0370 100644
--- a/dl-invites/app/src/main/java/com/google/firebase/dynamicinvites/kotlin/view/AdvancedActivity.kt
+++ b/dl-invites/app/src/main/java/com/google/firebase/dynamicinvites/kotlin/view/AdvancedActivity.kt
@@ -1,11 +1,11 @@
 package com.google.firebase.dynamicinvites.kotlin.view
 
 import android.os.Bundle
+import android.widget.Button
 import androidx.appcompat.app.AppCompatActivity
 
 import com.google.firebase.dynamicinvites.R
 import com.google.firebase.dynamicinvites.kotlin.presenter.InvitePresenter
-import kotlinx.android.synthetic.main.activity_main.buttonShare
 
 class AdvancedActivity : AppCompatActivity(), ShareDialogFragment.Listener {
 
@@ -13,7 +13,7 @@ class AdvancedActivity : AppCompatActivity(), ShareDialogFragment.Listener {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_advanced)
 
-        buttonShare.setOnClickListener {
+        findViewById<Button>(R.id.buttonShare).setOnClickListener {
             ShareDialogFragment.newInstance().show(supportFragmentManager, "dialog")
         }
     }
diff --git a/dl-invites/app/src/main/java/com/google/firebase/dynamicinvites/kotlin/view/MainActivity.kt b/dl-invites/app/src/main/java/com/google/firebase/dynamicinvites/kotlin/view/MainActivity.kt
index 9ec92de92..0ce831fec 100644
--- a/dl-invites/app/src/main/java/com/google/firebase/dynamicinvites/kotlin/view/MainActivity.kt
+++ b/dl-invites/app/src/main/java/com/google/firebase/dynamicinvites/kotlin/view/MainActivity.kt
@@ -2,10 +2,10 @@ package com.google.firebase.dynamicinvites.kotlin.view
 
 import android.content.Intent
 import android.os.Bundle
+import android.widget.Button
 import androidx.appcompat.app.AppCompatActivity
 import com.google.firebase.dynamicinvites.R
 import com.google.firebase.dynamicinvites.kotlin.util.DynamicLinksUtil
-import kotlinx.android.synthetic.main.activity_main.buttonShare
 
 class MainActivity : AppCompatActivity() {
 
@@ -13,7 +13,7 @@ class MainActivity : AppCompatActivity() {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
 
-        buttonShare.setOnClickListener {
+        findViewById<Button>(R.id.buttonShare).setOnClickListener {
             onShareClicked()
         }
     }
diff --git a/dl-invites/app/src/main/java/com/google/firebase/dynamicinvites/kotlin/view/ShareDialogFragment.kt b/dl-invites/app/src/main/java/com/google/firebase/dynamicinvites/kotlin/view/ShareDialogFragment.kt
index c78240804..8969b3a26 100644
--- a/dl-invites/app/src/main/java/com/google/firebase/dynamicinvites/kotlin/view/ShareDialogFragment.kt
+++ b/dl-invites/app/src/main/java/com/google/firebase/dynamicinvites/kotlin/view/ShareDialogFragment.kt
@@ -5,6 +5,8 @@ import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
+import android.widget.ImageView
+import android.widget.TextView
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
 import com.google.android.material.bottomsheet.BottomSheetDialogFragment
@@ -16,9 +18,6 @@ import com.google.firebase.dynamicinvites.kotlin.presenter.MessagePresenter
 import com.google.firebase.dynamicinvites.kotlin.presenter.MorePresenter
 import com.google.firebase.dynamicinvites.kotlin.presenter.SocialPresenter
 import com.google.firebase.dynamicinvites.kotlin.util.DynamicLinksUtil
-import kotlinx.android.synthetic.main.fragment_item_list_dialog.recycler
-import kotlinx.android.synthetic.main.item_share_method.view.itemIcon
-import kotlinx.android.synthetic.main.item_share_method.view.itemName
 
 /**
  * A fragment that shows a list of items as a modal bottom sheet.
@@ -55,6 +54,7 @@ class ShareDialogFragment : BottomSheetDialogFragment() {
                 MorePresenter(true, content)
         )
 
+        val recycler = view.findViewById<RecyclerView>(R.id.recycler)
         recycler.layoutManager = LinearLayoutManager(context)
         recycler.adapter = ItemAdapter(presenters)
     }
@@ -62,11 +62,7 @@ class ShareDialogFragment : BottomSheetDialogFragment() {
     override fun onAttach(context: Context) {
         super.onAttach(context)
         val parent = parentFragment
-        listener = if (parent != null) {
-            parent as Listener
-        } else {
-            context as Listener
-        }
+        listener = (parent ?: context) as Listener
     }
 
     override fun onDetach() {
@@ -81,9 +77,9 @@ class ShareDialogFragment : BottomSheetDialogFragment() {
     private inner class ViewHolder(inflater: LayoutInflater, parent: ViewGroup) :
         RecyclerView.ViewHolder(inflater.inflate(R.layout.item_share_method, parent, false)) {
 
-        internal fun bind(presenter: InvitePresenter) {
-            itemView.itemName.text = presenter.name
-            itemView.itemIcon.setImageResource(presenter.icon)
+        fun bind(presenter: InvitePresenter) {
+            itemView.findViewById<TextView>(R.id.itemName).text = presenter.name
+            itemView.findViewById<ImageView>(R.id.itemIcon).setImageResource(presenter.icon)
 
             itemView.setOnClickListener {
                 listener?.onItemClicked(presenter)
diff --git a/dynamic-links/app/build.gradle b/dynamic-links/app/build.gradle
index 9affdb358..e95638693 100644
--- a/dynamic-links/app/build.gradle
+++ b/dynamic-links/app/build.gradle
@@ -1,6 +1,5 @@
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
-apply plugin: 'kotlin-android-extensions'
 
 android {
     compileSdkVersion 30
diff --git a/firebaseoptions/app/build.gradle b/firebaseoptions/app/build.gradle
index 82bec8fae..78b2776d0 100644
--- a/firebaseoptions/app/build.gradle
+++ b/firebaseoptions/app/build.gradle
@@ -1,6 +1,5 @@
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
-apply plugin: 'kotlin-android-extensions'
 
 android {
     compileSdkVersion 30
diff --git a/firestore/app/build.gradle b/firestore/app/build.gradle
index 3d495da96..d4b286028 100644
--- a/firestore/app/build.gradle
+++ b/firestore/app/build.gradle
@@ -1,6 +1,5 @@
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
-apply plugin: 'kotlin-android-extensions'
 
 android {
     compileSdkVersion 30
diff --git a/functions/app/build.gradle b/functions/app/build.gradle
index 4d86ff06a..9e29ab4ec 100644
--- a/functions/app/build.gradle
+++ b/functions/app/build.gradle
@@ -1,6 +1,5 @@
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
-apply plugin: 'kotlin-android-extensions'
 
 android {
     compileSdkVersion 30
diff --git a/inappmessaging/app/build.gradle b/inappmessaging/app/build.gradle
index 95b69d91a..806ba6267 100644
--- a/inappmessaging/app/build.gradle
+++ b/inappmessaging/app/build.gradle
@@ -1,6 +1,5 @@
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
-apply plugin: 'kotlin-android-extensions'
 
 android {
     compileSdkVersion 30
diff --git a/installations/app/build.gradle b/installations/app/build.gradle
index a07ee0c04..e50210d20 100644
--- a/installations/app/build.gradle
+++ b/installations/app/build.gradle
@@ -1,6 +1,5 @@
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
-apply plugin: 'kotlin-android-extensions'
 
 android {
     compileSdkVersion 30
diff --git a/messaging/app/build.gradle b/messaging/app/build.gradle
index 793bd346b..2a7afc4b3 100644
--- a/messaging/app/build.gradle
+++ b/messaging/app/build.gradle
@@ -1,6 +1,5 @@
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
-apply plugin: 'kotlin-android-extensions'
 
 android {
     compileSdkVersion 30
diff --git a/mlkit/app/build.gradle b/mlkit/app/build.gradle
index 5964b5632..b75f75569 100644
--- a/mlkit/app/build.gradle
+++ b/mlkit/app/build.gradle
@@ -1,6 +1,5 @@
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
-apply plugin: 'kotlin-android-extensions'
 
 android {
     compileSdkVersion 30
diff --git a/perf/app/build.gradle b/perf/app/build.gradle
index d12251f6e..b2199a27d 100644
--- a/perf/app/build.gradle
+++ b/perf/app/build.gradle
@@ -1,6 +1,5 @@
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
-apply plugin: 'kotlin-android-extensions'
 
 android {
     compileSdkVersion 30
diff --git a/predictions/app/build.gradle b/predictions/app/build.gradle
index 40487f5cb..bccfade4c 100644
--- a/predictions/app/build.gradle
+++ b/predictions/app/build.gradle
@@ -1,6 +1,5 @@
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
-apply plugin: 'kotlin-android-extensions'
 
 android {
     compileSdkVersion 30
diff --git a/predictions/app/src/main/java/com/google/firebase/example/predictions/kotlin/MainActivity.kt b/predictions/app/src/main/java/com/google/firebase/example/predictions/kotlin/MainActivity.kt
index c6acbe149..e832d64fd 100644
--- a/predictions/app/src/main/java/com/google/firebase/example/predictions/kotlin/MainActivity.kt
+++ b/predictions/app/src/main/java/com/google/firebase/example/predictions/kotlin/MainActivity.kt
@@ -4,11 +4,12 @@ import android.os.Bundle
 import android.view.View
 import androidx.appcompat.app.AppCompatActivity
 import com.google.android.gms.ads.AdRequest
+import com.google.android.gms.ads.AdView
 import com.google.firebase.analytics.FirebaseAnalytics
+import com.google.firebase.example.predictions.R
 import com.google.firebase.ktx.Firebase
 import com.google.firebase.remoteconfig.ktx.get
 import com.google.firebase.remoteconfig.ktx.remoteConfig
-import kotlinx.android.synthetic.main.activity_main.adView
 
 class MainActivity : AppCompatActivity() {
 
@@ -44,6 +45,7 @@ class MainActivity : AppCompatActivity() {
     }
 
     private fun executeAdsPolicy() {
+        val adView = findViewById<AdView>(R.id.adView)
         // [START pred_ads_policy]
         val config = Firebase.remoteConfig
         val adPolicy = config["ads_policy"].asString()
diff --git a/storage/app/build.gradle b/storage/app/build.gradle
index 7bf563ff9..2c9026a96 100644
--- a/storage/app/build.gradle
+++ b/storage/app/build.gradle
@@ -1,7 +1,6 @@
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
 apply plugin: 'kotlin-kapt'
-apply plugin: 'kotlin-android-extensions'
 
 android {
     compileSdkVersion 30
diff --git a/storage/app/src/main/java/com/google/firebase/referencecode/storage/kotlin/StorageActivity.kt b/storage/app/src/main/java/com/google/firebase/referencecode/storage/kotlin/StorageActivity.kt
index d04d3acc0..3b0bd874b 100644
--- a/storage/app/src/main/java/com/google/firebase/referencecode/storage/kotlin/StorageActivity.kt
+++ b/storage/app/src/main/java/com/google/firebase/referencecode/storage/kotlin/StorageActivity.kt
@@ -5,6 +5,7 @@ import android.graphics.drawable.BitmapDrawable
 import android.net.Uri
 import android.os.Bundle
 import android.util.Log
+import android.widget.ImageView
 import androidx.appcompat.app.AppCompatActivity
 import com.google.android.gms.tasks.OnFailureListener
 import com.google.firebase.ktx.Firebase
@@ -18,7 +19,6 @@ import com.google.firebase.storage.ktx.component2
 import com.google.firebase.storage.ktx.component3
 import com.google.firebase.storage.ktx.storage
 import com.google.firebase.storage.ktx.storageMetadata
-import kotlinx.android.synthetic.main.activity_storage.imageView
 import java.io.ByteArrayOutputStream
 import java.io.File
 import java.io.FileInputStream
@@ -140,6 +140,7 @@ abstract class StorageActivity : AppCompatActivity() {
         mountainsRef.path == mountainImagesRef.path // false
         // [END upload_create_reference]
 
+        val imageView = findViewById<ImageView>(R.id.imageView)
         // [START upload_memory]
         // Get the data from an ImageView as bytes
         imageView.isDrawingCacheEnabled = true
diff --git a/tasks/app/build.gradle b/tasks/app/build.gradle
index ea1932ad7..c180eaccf 100644
--- a/tasks/app/build.gradle
+++ b/tasks/app/build.gradle
@@ -1,6 +1,5 @@
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
-apply plugin: 'kotlin-android-extensions'
 
 android {
     compileSdkVersion 30
diff --git a/test-lab/app/build.gradle b/test-lab/app/build.gradle
index 27385eef7..c90de86cf 100644
--- a/test-lab/app/build.gradle
+++ b/test-lab/app/build.gradle
@@ -1,6 +1,5 @@
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
-apply plugin: 'kotlin-android-extensions'
 
 android {
     compileSdkVersion 30