#2159 navigation works but no navigation fragments are implemented

app/src/main/java/org/kiwix/kiwixmobile/main/KiwixMainActivity.kt

@@ -63,11 +63,12 @@ class KiwixMainActivity : CoreMainActivity() {
 
   override fun onCreate(savedInstanceState: Bundle?) {
     super.onCreate(savedInstanceState)
+    setContentView(R.layout.activity_kiwix_new_navigation)
 
     if (savedInstanceState != null) {
       return
     }
     supportFragmentManager.beginTransaction()
-      .add(R.id.fragment_custom_app_container, KiwixMainFragment()).commit()
+      .add(R.id.kiwix_fragment_containter, KiwixMainFragment()).commit()
   }
 }

app/src/main/java/org/kiwix/kiwixmobile/main/KiwixMainFragment.kt

@@ -87,7 +87,7 @@ class KiwixMainFragment : CoreReaderFragment() {
   ) = KiwixWebViewClient(webViewCallback, zimReaderContainer)
 
   override fun onNewNavigationMenuClicked() {
-    // do nothing
+    startActivity(Intent(activity, KiwixNewNavigationActivity::class.java))
   }
 
   private fun manageExternalLaunchAndRestoringViewState() {

app/src/main/java/org/kiwix/kiwixmobile/main/KiwixNewNavigationActivity.kt

@@ -42,7 +42,6 @@ class KiwixNewNavigationActivity : CoreNewNavigationActivity() {
 
   override fun onCreate(savedInstanceState: Bundle?) {
     super.onCreate(savedInstanceState)
-    setContentView(R.layout.activity_new_navigation)
     val navView: BottomNavigationView = findViewById(R.id.nav_view)
 
     navController = findNavController(R.id.nav_host_fragment)

app/src/main/java/org/kiwix/kiwixmobile/main/NavigationHostFragment.kt

@@ -18,8 +18,12 @@
 
 package org.kiwix.kiwixmobile.main
 
-import androidx.fragment.app.Fragment
+import android.content.Intent
-
+import androidx.navigation.fragment.NavHostFragment
-class NavigationHostFragment : Fragment() {
 
+class NavigationHostFragment : NavHostFragment() {
+  override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
+    super.onActivityResult(requestCode, resultCode, data)
+    childFragmentManager.fragments.forEach { it.onActivityResult(requestCode, resultCode, data) }
+  }
 }

app/src/main/res/layout/activity_kiwix_new_navigation.xml

@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+  ~ Kiwix Android
+  ~ Copyright (c) 2020 Kiwix <android.kiwix.org>
+  ~ 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
+  ~ the Free Software Foundation, either version 3 of the License, or
+  ~ (at your option) any later version.
+  ~
+  ~ This program is distributed in the hope that it will be useful,
+  ~ but WITHOUT ANY WARRANTY; without even the implied warranty of
+  ~ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  ~ GNU General Public License for more details.
+  ~
+  ~ You should have received a copy of the GNU General Public License
+  ~ along with this program. If not, see <http://www.gnu.org/licenses/>.
+  ~
+  -->
+
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+  xmlns:app="http://schemas.android.com/apk/res-auto"
+  android:layout_width="match_parent"
+  android:layout_height="match_parent">
+
+  <androidx.fragment.app.FragmentContainerView
+    android:id="@+id/kiwix_fragment_containter"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    app:layout_constraintBottom_toBottomOf="parent"
+    app:layout_constraintEnd_toEndOf="parent"
+    app:layout_constraintStart_toStartOf="parent"
+    app:layout_constraintTop_toTopOf="parent" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>

core/src/main/res/layout/activity_new_navigation.xml

@@ -23,7 +23,7 @@
   android:layout_height="match_parent">
 
   <androidx.fragment.app.FragmentContainerView
-    android:id="@+id/fragment_custom_app_container"
+    android:id="@+id/fragment_containter"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     app:layout_constraintBottom_toBottomOf="parent"

custom/src/main/java/org/kiwix/kiwixmobile/custom/main/CustomMainActivity.kt

@@ -71,6 +71,6 @@ class CustomMainActivity : CoreMainActivity() {
       return
     }
     supportFragmentManager.beginTransaction()
-      .add(R.id.fragment_custom_app_container, CustomReaderFragment()).commit()
+      .add(R.id.fragment_containter, CustomReaderFragment()).commit()
   }
 }