Task: Change the Back button's destination

AndroidTriviaFragment/app/src/main/java/com/example/android/navigation/GameFragment.kt

@@ -25,6 +25,7 @@ import androidx.databinding.DataBindingUtil
 import androidx.fragment.app.Fragment
 import androidx.navigation.findNavController
 import com.example.android.navigation.databinding.FragmentGameBinding
+import java.security.cert.LDAPCertStoreParameters
 
 class GameFragment : Fragment() {
     data class Question(

AndroidTriviaFragment/app/src/main/java/com/example/android/navigation/GameOverFragment.kt

@@ -22,6 +22,7 @@ import android.view.View
 import android.view.ViewGroup
 import androidx.databinding.DataBindingUtil
 import androidx.fragment.app.Fragment
+import androidx.navigation.findNavController
 import com.example.android.navigation.databinding.FragmentGameOverBinding
 
 class GameOverFragment : Fragment() {
@@ -30,6 +31,11 @@ class GameOverFragment : Fragment() {
         // Inflate the layout for this fragment
         val binding: FragmentGameOverBinding = DataBindingUtil.inflate(
                 inflater, R.layout.fragment_game_over, container, false)
+        // Add OnClick Handler for Try Again button
+        binding.tryAgainButton.setOnClickListener { view ->
+            view.findNavController().
+                    navigate(R.id.action_gameOverFragment_to_gameFragment)
+        }
         return binding.root
     }
 }

AndroidTriviaFragment/app/src/main/java/com/example/android/navigation/GameWonFragment.kt

@@ -22,6 +22,7 @@ import android.view.View
 import android.view.ViewGroup
 import androidx.databinding.DataBindingUtil
 import androidx.fragment.app.Fragment
+import androidx.navigation.findNavController
 import com.example.android.navigation.databinding.FragmentGameWonBinding
 
 
@@ -31,6 +32,11 @@ class GameWonFragment : Fragment() {
         // Inflate the layout for this fragment
         val binding: FragmentGameWonBinding = DataBindingUtil.inflate(
                 inflater, R.layout.fragment_game_won, container, false)
+        // Add OnClick Handler for Next Match button
+        binding.nextMatchButton.setOnClickListener { view: View ->
+            view.findNavController().
+                    navigate(R.id.action_gameWonFragment_to_gameFragment)
+        }
         return binding.root
     }
 }

AndroidTriviaFragment/app/src/main/res/navigation/navigation.xml

@@ -21,19 +21,35 @@
         tools:layout="@layout/fragment_game">
         <action
             android:id="@+id/action_gameFragment_to_gameOverFragment"
-            app:destination="@id/gameOverFragment" />
+            app:destination="@id/gameOverFragment"
+            app:popUpTo="@id/gameFragment"
+            app:popUpToInclusive="true" />
         <action
             android:id="@+id/action_gameFragment_to_gameWonFragment"
-            app:destination="@id/gameWonFragment" />
+            app:destination="@id/gameWonFragment"
+            app:popUpTo="@id/gameFragment"
+            app:popUpToInclusive="true" />
     </fragment>
     <fragment
         android:id="@+id/gameOverFragment"
         android:name="com.example.android.navigation.GameOverFragment"
         android:label="fragment_game_over"
-        tools:layout="@layout/fragment_game_over" />
+        tools:layout="@layout/fragment_game_over" >
+        <action
+            android:id="@+id/action_gameOverFragment_to_gameFragment"
+            app:destination="@id/gameFragment"
+            app:popUpTo="@id/titleFragment"
+            app:popUpToInclusive="false" />
+    </fragment>
     <fragment
         android:id="@+id/gameWonFragment"
         android:name="com.example.android.navigation.GameWonFragment"
         android:label="fragment_game_won"
-        tools:layout="@layout/fragment_game_won" />
+        tools:layout="@layout/fragment_game_won" >
+        <action
+            android:id="@+id/action_gameWonFragment_to_gameFragment"
+            app:destination="@id/gameFragment"
+            app:popUpTo="@id/titleFragment"
+            app:popUpToInclusive="false" />
+    </fragment>
 </navigation>

AndroidTriviaFragment/build.gradle

@@ -20,7 +20,7 @@ buildscript {
         navigationVersion = '1.0.0-rc02'
         kotlin_version = '1.3.11'
         archLifecycleVersion = '1.1.1'
-        gradleVersion = '3.3.1'
+        gradleVersion = '3.6.1'
         supportlibVersion = '1.0.0-rc03'
         dataBindingCompilerVersion = gradleVersion // Always need to be the same.
         navigationVersion = '1.0.0-rc02'

AndroidTriviaFragment/gradle/wrapper/gradle-wrapper.properties

@@ -1,7 +1,7 @@
-#Mon Jan 14 23:13:44 IST 2019
+#Mon Mar 02 16:33:07 MSK 2020
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 android.databinding.enableV2=true
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.6.4-all.zip