diff --git a/app/build.gradle b/app/build.gradle
index c5cf1b8..fc2be4a 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -34,11 +34,15 @@ android {
     kotlinOptions {
         jvmTarget = '17'
     }
+    buildFeatures {
+        viewBinding = true
+    }
 }
 
 dependencies {
 
     implementation 'androidx.core:core-ktx:1.7.0'
+    implementation("androidx.fragment:fragment-ktx:1.7.0")
     implementation 'androidx.appcompat:appcompat:1.5.1'
     implementation 'com.google.android.material:material:1.6.1'
     implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 9604b34..46bc072 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -12,6 +12,12 @@
         android:supportsRtl="true"
         android:theme="@style/Theme.Fragments"
         tools:targetApi="31">
+        <activity
+            android:name=".ActivityB"
+            android:exported="false" />
+        <activity
+            android:name=".ActivityA"
+            android:exported="false" />
         <activity
             android:name=".MainActivity"
             android:exported="true">
diff --git a/app/src/main/java/otus/gpb/homework/fragments/ActivityA.kt b/app/src/main/java/otus/gpb/homework/fragments/ActivityA.kt
new file mode 100644
index 0000000..b36a990
--- /dev/null
+++ b/app/src/main/java/otus/gpb/homework/fragments/ActivityA.kt
@@ -0,0 +1,27 @@
+package otus.gpb.homework.fragments
+
+import android.os.Bundle
+import androidx.appcompat.app.AppCompatActivity
+import otus.gpb.homework.fragments.databinding.ActivityABinding
+
+class ActivityA : AppCompatActivity() {
+
+    private lateinit var binding: ActivityABinding
+
+    private lateinit var fragmentA: FragmentA
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        binding = ActivityABinding.inflate(layoutInflater)
+        setContentView(binding.root)
+        fragmentA = if (savedInstanceState == null) {
+            FragmentA.newInstance()
+        } else {
+            supportFragmentManager.findFragmentByTag("fragmentA") as FragmentA
+        }
+        supportFragmentManager.beginTransaction()
+            .replace(R.id.fragment_activity_a, fragmentA, "fragmentA")
+            .commit()
+
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/otus/gpb/homework/fragments/ActivityB.kt b/app/src/main/java/otus/gpb/homework/fragments/ActivityB.kt
new file mode 100644
index 0000000..c96abde
--- /dev/null
+++ b/app/src/main/java/otus/gpb/homework/fragments/ActivityB.kt
@@ -0,0 +1,50 @@
+package otus.gpb.homework.fragments
+
+import android.R.attr.orientation
+import android.content.res.Configuration
+import android.os.Bundle
+import androidx.appcompat.app.AppCompatActivity
+import otus.gpb.homework.fragments.databinding.ActivityBBinding
+
+class ActivityB : AppCompatActivity() {
+
+    private lateinit var binding: ActivityBBinding
+
+    private lateinit var fragmentBA: FragmentBA
+    private lateinit var fragmentBB: FragmentBB
+
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        binding = ActivityBBinding.inflate(layoutInflater)
+        setContentView(binding.root)
+
+        if (resources.configuration.orientation == Configuration.ORIENTATION_LANDSCAPE) {
+            fragmentBA = savedInstanceState
+                ?.let { supportFragmentManager.findFragmentByTag(FragmentBA::class.simpleName) as? FragmentBA }
+                ?: FragmentBA()
+
+            fragmentBB = savedInstanceState
+                ?.let { supportFragmentManager.findFragmentByTag(FragmentBB::class.simpleName) as? FragmentBB }
+                ?: FragmentBB()
+
+            supportFragmentManager.beginTransaction()
+                .replace(R.id.fragment_b_a_container, fragmentBA, FragmentBA::class.simpleName)
+                .replace(R.id.fragment_b_b_container, fragmentBB, FragmentBB::class.simpleName)
+                .addToBackStack(null)
+                .commit()
+        } else {
+            fragmentBA = savedInstanceState
+                ?.let { supportFragmentManager.findFragmentByTag(FragmentBA::class.simpleName) as? FragmentBA }
+                ?: FragmentBA()
+            supportFragmentManager.beginTransaction()
+                .replace(R.id.fragment_b_a_container, fragmentBA, FragmentBA::class.simpleName)
+                .addToBackStack(null)
+                .commit()
+        }
+
+
+    }
+
+
+}
\ No newline at end of file
diff --git a/app/src/main/java/otus/gpb/homework/fragments/FragmentA.kt b/app/src/main/java/otus/gpb/homework/fragments/FragmentA.kt
new file mode 100644
index 0000000..d053692
--- /dev/null
+++ b/app/src/main/java/otus/gpb/homework/fragments/FragmentA.kt
@@ -0,0 +1,72 @@
+package otus.gpb.homework.fragments
+
+import android.content.Context
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.activity.OnBackPressedCallback
+import androidx.fragment.app.Fragment
+import otus.gpb.homework.fragments.databinding.FragmentABinding
+
+
+class FragmentA : Fragment() {
+    private var _binding: FragmentABinding? = null
+
+    private val binding get() = _binding!!
+
+    private lateinit var fragmentAA: FragmentAA
+
+    override fun onAttach(context: Context) {
+        super.onAttach(context)
+
+        val callback = object : OnBackPressedCallback(true) {
+            override fun handleOnBackPressed() {
+                if (childFragmentManager.backStackEntryCount > 0) {
+                    childFragmentManager.popBackStack()
+                } else {
+                    isEnabled = false
+                    requireActivity().onBackPressedDispatcher.onBackPressed()
+                }
+            }
+        }
+        requireActivity().onBackPressedDispatcher.addCallback(callback)
+    }
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View {
+        _binding = FragmentABinding.inflate(inflater, container, false)
+        val root: View = binding.root
+        return root
+    }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        fragmentAA = if (savedInstanceState == null) {
+            FragmentAA.newInstance(ColorGenerator.generateColor())
+        } else {
+            childFragmentManager.findFragmentByTag("fragmentAA") as FragmentAA
+        }
+        with(binding) {
+            fragmentAAButton.setOnClickListener {
+                childFragmentManager.beginTransaction()
+                    .replace(fragmentAContainer.id, fragmentAA, "fragmentAA")
+                    .addToBackStack("fragmentA")
+                    .commit()
+            }
+        }
+    }
+
+    override fun onDestroyView() {
+        super.onDestroyView()
+        _binding = null
+    }
+
+    companion object {
+        @JvmStatic
+        fun newInstance() = FragmentA()
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/otus/gpb/homework/fragments/FragmentAA.kt b/app/src/main/java/otus/gpb/homework/fragments/FragmentAA.kt
new file mode 100644
index 0000000..a77e2f2
--- /dev/null
+++ b/app/src/main/java/otus/gpb/homework/fragments/FragmentAA.kt
@@ -0,0 +1,68 @@
+package otus.gpb.homework.fragments
+
+import android.graphics.Color
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.fragment.app.Fragment
+import otus.gpb.homework.fragments.databinding.FragmentAABinding
+
+const val COLOR_ARG_PARAM = "color"
+
+class FragmentAA : Fragment() {
+
+    private var _binding: FragmentAABinding? = null
+
+    private val binding get() = _binding!!
+
+    private lateinit var fragmentAB: FragmentAB
+
+    private var color: Int = Color.CYAN
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        arguments?.let {
+            color = it.getInt(COLOR_ARG_PARAM)
+        }
+    }
+
+    override fun onCreateView(
+        inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?
+    ): View {
+        _binding = FragmentAABinding.inflate(inflater, container, false)
+        val root: View = binding.root
+        binding.root.setBackgroundColor(color)
+        return root
+    }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        fragmentAB = if (savedInstanceState == null) {
+            FragmentAB.newInstance(ColorGenerator.generateColor())
+        } else {
+            parentFragmentManager.findFragmentByTag("fragmentAB") as FragmentAB
+        }
+        with(binding) {
+            fragmentABButton.setOnClickListener {
+                parentFragmentManager.beginTransaction()
+                    .replace(fragmentAAContainer.id, fragmentAB, "fragmentAB")
+                    .addToBackStack("fragmentA").commit()
+            }
+        }
+    }
+
+    override fun onDestroyView() {
+        super.onDestroyView()
+        _binding = null
+    }
+
+    companion object {
+        @JvmStatic
+        fun newInstance(param1: Int) = FragmentAA().apply {
+            arguments = Bundle().apply {
+                putInt(COLOR_ARG_PARAM, param1)
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/otus/gpb/homework/fragments/FragmentAB.kt b/app/src/main/java/otus/gpb/homework/fragments/FragmentAB.kt
new file mode 100644
index 0000000..43592be
--- /dev/null
+++ b/app/src/main/java/otus/gpb/homework/fragments/FragmentAB.kt
@@ -0,0 +1,50 @@
+package otus.gpb.homework.fragments
+
+import android.graphics.Color
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.fragment.app.Fragment
+import otus.gpb.homework.fragments.databinding.FragmentABBinding
+
+class FragmentAB : Fragment() {
+
+
+    private var _binding: FragmentABBinding? = null
+    private val binding get() = _binding!!
+
+    private var color: Int = Color.CYAN
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        arguments?.let {
+            color = it.getInt(COLOR_ARG_PARAM)
+        }
+    }
+
+    override fun onCreateView(
+        inflater: LayoutInflater, container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View {
+        _binding = FragmentABBinding.inflate(inflater, container, false)
+        val root: View = binding.root
+        binding.root.setBackgroundColor(color)
+        return root
+    }
+
+    override fun onDestroyView() {
+        super.onDestroyView()
+        _binding = null
+    }
+
+    companion object {
+        @JvmStatic
+        fun newInstance(param1: Int) =
+            FragmentAB().apply {
+                arguments = Bundle().apply {
+                    putInt(COLOR_ARG_PARAM, param1)
+                }
+            }
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/otus/gpb/homework/fragments/FragmentBA.kt b/app/src/main/java/otus/gpb/homework/fragments/FragmentBA.kt
new file mode 100644
index 0000000..ee1734a
--- /dev/null
+++ b/app/src/main/java/otus/gpb/homework/fragments/FragmentBA.kt
@@ -0,0 +1,58 @@
+package otus.gpb.homework.fragments
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.setFragmentResultListener
+import otus.gpb.homework.fragments.databinding.FragmentBABinding
+import otus.gpb.homework.fragments.utils.COLOR_RESULT_BUNDLE_KEY_BB_TO_BA
+import otus.gpb.homework.fragments.utils.COLOR_RESULT_KEY_BB_TO_BA
+
+
+class FragmentBA : Fragment() {
+    private var _binding: FragmentBABinding? = null
+    private val binding get() = _binding!!
+
+    private lateinit var fragmentBB: FragmentBB
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View {
+        _binding = FragmentBABinding.inflate(inflater, container, false)
+        val root: View = binding.root
+        return root
+    }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        fragmentBB = savedInstanceState
+            ?.let {
+                parentFragmentManager.getFragment(savedInstanceState, "fragmentBB") as? FragmentBB
+            }
+            ?: FragmentBB()
+
+        setFragmentResultListener(COLOR_RESULT_KEY_BB_TO_BA) { _, bundle ->
+            val color: Int = bundle.getInt(COLOR_RESULT_BUNDLE_KEY_BB_TO_BA)
+            binding.root.setBackgroundColor(color)
+        }
+
+        binding.fragmentBBButton?.setOnClickListener {
+            parentFragmentManager.beginTransaction()
+                .replace(R.id.fragment_b_a_container, fragmentBB, FragmentBB::class.simpleName)
+                .addToBackStack(null)
+                .commit()
+        }
+
+    }
+
+    override fun onDestroyView() {
+        super.onDestroyView()
+        _binding = null
+    }
+
+
+}
\ No newline at end of file
diff --git a/app/src/main/java/otus/gpb/homework/fragments/FragmentBB.kt b/app/src/main/java/otus/gpb/homework/fragments/FragmentBB.kt
new file mode 100644
index 0000000..4ba9792
--- /dev/null
+++ b/app/src/main/java/otus/gpb/homework/fragments/FragmentBB.kt
@@ -0,0 +1,58 @@
+package otus.gpb.homework.fragments
+
+import android.content.res.Configuration
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.core.os.bundleOf
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.setFragmentResult
+import otus.gpb.homework.fragments.databinding.FragmentBBBinding
+import otus.gpb.homework.fragments.utils.COLOR_RESULT_BUNDLE_KEY_BB_TO_BA
+import otus.gpb.homework.fragments.utils.COLOR_RESULT_KEY_BB_TO_BA
+
+class FragmentBB : Fragment() {
+    private var _binding: FragmentBBBinding? = null
+
+    private val binding get() = _binding!!
+
+    private lateinit var fragmentBA: FragmentBA
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View {
+        _binding = FragmentBBBinding.inflate(inflater, container, false)
+        val root: View = binding.root
+        return root
+    }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        fragmentBA = savedInstanceState
+            ?.let {
+                parentFragmentManager.getFragment(savedInstanceState, "fragmentBA") as? FragmentBA
+            }
+            ?: FragmentBA()
+
+        binding.fragmentBBButton.setOnClickListener {
+            setFragmentResult(
+                COLOR_RESULT_KEY_BB_TO_BA,
+                bundleOf(COLOR_RESULT_BUNDLE_KEY_BB_TO_BA to ColorGenerator.generateColor())
+            )
+            if (resources.configuration.orientation == Configuration.ORIENTATION_PORTRAIT) {
+                parentFragmentManager.beginTransaction()
+                    .replace(R.id.fragment_b_a_container, fragmentBA, FragmentBA::class.simpleName)
+                    .addToBackStack(null)
+                    .commit()
+            }
+        }
+    }
+
+    override fun onDestroyView() {
+        super.onDestroyView()
+        _binding = null
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/otus/gpb/homework/fragments/MainActivity.kt b/app/src/main/java/otus/gpb/homework/fragments/MainActivity.kt
index 5e89c44..44c284d 100644
--- a/app/src/main/java/otus/gpb/homework/fragments/MainActivity.kt
+++ b/app/src/main/java/otus/gpb/homework/fragments/MainActivity.kt
@@ -1,12 +1,26 @@
 package otus.gpb.homework.fragments
 
+import android.content.Intent
 import android.os.Bundle
 import androidx.appcompat.app.AppCompatActivity
+import otus.gpb.homework.fragments.databinding.ActivityMainBinding
 
 class MainActivity : AppCompatActivity() {
 
+    private lateinit var binding: ActivityMainBinding
+
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_main)
+        binding = ActivityMainBinding.inflate(layoutInflater)
+        setContentView(binding.root)
+        binding.activityAButton.setOnClickListener {
+            startActivity(Intent(this, ActivityA::class.java))
+        }
+        binding.activityBButton.setOnClickListener {
+            startActivity(Intent(this, ActivityB::class.java))
+        }
+
+
     }
 }
\ No newline at end of file
diff --git a/app/src/main/java/otus/gpb/homework/fragments/utils/Consts.kt b/app/src/main/java/otus/gpb/homework/fragments/utils/Consts.kt
new file mode 100644
index 0000000..fd5e4e0
--- /dev/null
+++ b/app/src/main/java/otus/gpb/homework/fragments/utils/Consts.kt
@@ -0,0 +1,10 @@
+package otus.gpb.homework.fragments.utils
+
+
+const val COLOR_RESULT_KEY_BB_TO_BA = "color_result_bb_to_ba"
+const val COLOR_RESULT_BUNDLE_KEY_BB_TO_BA = "color_result_bundle_bb_to_ba"
+
+
+
+const val COLOR_RESULT_KEY_BA_TO_BB = "color_result_ba_to_bb"
+const val COLOR_RESULT_BUNDLE_KEY_BA_TO_BB = "color_result_bundle_ba_to_bb"
\ No newline at end of file
diff --git a/app/src/main/res/layout-land/activity_b.xml b/app/src/main/res/layout-land/activity_b.xml
new file mode 100644
index 0000000..e905cdd
--- /dev/null
+++ b/app/src/main/res/layout-land/activity_b.xml
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/main"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:baselineAligned="false"
+    android:orientation="horizontal"
+    tools:context=".ActivityB">
+
+
+    <androidx.fragment.app.FragmentContainerView
+        android:id="@+id/fragment_b_a_container"
+        android:name="otus.gpb.homework.fragments.FragmentBA"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_weight="1" />
+
+    <androidx.fragment.app.FragmentContainerView
+        android:id="@+id/fragment_b_b_container"
+        android:name="otus.gpb.homework.fragments.FragmentBB"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_weight="1" />
+</LinearLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout-land/fragment_b_a.xml b/app/src/main/res/layout-land/fragment_b_a.xml
new file mode 100644
index 0000000..787c55e
--- /dev/null
+++ b/app/src/main/res/layout-land/fragment_b_a.xml
@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    tools:context=".FragmentBA">
+
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:textAlignment="center"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintBottom_toBottomOf="parent"
+        android:text="@string/hello_blank_fragment_b_a" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_a.xml b/app/src/main/res/layout/activity_a.xml
new file mode 100644
index 0000000..f455fc1
--- /dev/null
+++ b/app/src/main/res/layout/activity_a.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/main"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".ActivityA">
+
+<androidx.fragment.app.FragmentContainerView
+    android:id="@+id/fragment_activity_a"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent" />
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_b.xml b/app/src/main/res/layout/activity_b.xml
new file mode 100644
index 0000000..d77664f
--- /dev/null
+++ b/app/src/main/res/layout/activity_b.xml
@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/main"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".ActivityB">
+
+    <FrameLayout
+        android:id="@+id/fragment_b_a_container"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index 17eab17..a654977 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -6,13 +6,23 @@
     android:layout_height="match_parent"
     tools:context=".MainActivity">
 
-    <TextView
-        android:layout_width="wrap_content"
+    <Button
+        android:id="@+id/activity_a_button"
+        android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:text="Hello World!"
+        android:text="@string/activity_a_button_text"
+        app:layout_constraintBottom_toTopOf="@+id/activity_b_button"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_chainStyle="packed" />
+
+    <Button
+        android:id="@+id/activity_b_button"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/activity_b_button_text"
         app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
+        app:layout_constraintTop_toBottomOf="@+id/activity_a_button" />
 
 </androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/fragment_a.xml b/app/src/main/res/layout/fragment_a.xml
new file mode 100644
index 0000000..a7144be
--- /dev/null
+++ b/app/src/main/res/layout/fragment_a.xml
@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".FragmentA">
+
+    <TextView
+        android:id="@id/fragment_a_text"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/hello_blank_fragment_a"
+        android:textAlignment="center"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <Button
+        android:id="@+id/fragment_a_a_button"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/fragment_aa_button_text"
+        app:layout_constraintBottom_toTopOf="@+id/fragment_a_container"
+        app:layout_constraintTop_toBottomOf="@+id/fragment_a_text" />
+
+    <FrameLayout
+        android:id="@+id/fragment_a_container"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/fragment_a_a_button" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/fragment_a_a.xml b/app/src/main/res/layout/fragment_a_a.xml
new file mode 100644
index 0000000..36fad2d
--- /dev/null
+++ b/app/src/main/res/layout/fragment_a_a.xml
@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".FragmentAA">
+
+    <TextView
+        android:id="@id/fragment_a_a_text"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/hello_blank_fragment_a_a"
+        android:textAlignment="center"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <Button
+        android:id="@+id/fragment_a_b_button"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/fragment_ab_button_text"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/fragment_a_a_text" />
+
+    <FrameLayout
+        android:id="@+id/fragment_a_a_container"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/fragment_a_b_button" />
+
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/fragment_a_b.xml b/app/src/main/res/layout/fragment_a_b.xml
new file mode 100644
index 0000000..6382af1
--- /dev/null
+++ b/app/src/main/res/layout/fragment_a_b.xml
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".FragmentAB">
+
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:text="@string/hello_blank_fragment_a_b"
+        android:textAlignment="center" />
+
+</FrameLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/fragment_b_a.xml b/app/src/main/res/layout/fragment_b_a.xml
new file mode 100644
index 0000000..e422fb6
--- /dev/null
+++ b/app/src/main/res/layout/fragment_b_a.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".FragmentBA">
+
+    <TextView
+        android:id="@+id/fragment_b_a_text"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:textAlignment="center"
+        android:text="@string/hello_blank_fragment_b_a"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintTop_toTopOf="parent"/>
+
+    <Button
+        android:id="@+id/fragment_b_b_button"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:textAllCaps="false"
+        android:text="@string/fragment_b_a_button_text"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/fragment_b_a_text"
+
+        />
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/fragment_b_b.xml b/app/src/main/res/layout/fragment_b_b.xml
new file mode 100644
index 0000000..3452902
--- /dev/null
+++ b/app/src/main/res/layout/fragment_b_b.xml
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".FragmentBB">
+
+    <TextView
+        android:id="@+id/fragment_b_b_text"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:textAlignment="center"
+        android:text="@string/hello_blank_fragment_b_b"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <Button
+        android:id="@+id/fragment_b_b_button"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/fragment_b_b_button_text"
+        android:textAllCaps="false"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/fragment_b_b_text" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 34277aa..9cdbbf4 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -1,3 +1,14 @@
 <resources>
     <string name="app_name">Fragments</string>
+    <string name="activity_a_button_text">Activity A</string>
+    <string name="activity_b_button_text">Activity B</string>
+    <string name="fragment_aa_button_text">To Fragment AA</string>
+    <string name="fragment_ab_button_text">To Fragment AB</string>
+    <string name="hello_blank_fragment_a">Hello Fragment A</string>
+    <string name="hello_blank_fragment_a_a">Hello Fragment AA</string>
+    <string name="hello_blank_fragment_a_b">Hello Fragment AB</string>
+    <string name="hello_blank_fragment_b_a">Fragment BA</string>
+    <string name="hello_blank_fragment_b_b">Fragment BB</string>
+    <string name="fragment_b_b_button_text">SendColor</string>
+    <string name="fragment_b_a_button_text">Open Fragment BB</string>
 </resources>
\ No newline at end of file