Revert to using Toolbar for navigation.

app/src/main/java/apps/amine/bou/readerforselfoss/fragments/ImageFragment.kt

@@ -1,14 +1,11 @@
 package apps.amine.bou.readerforselfoss.fragments
 
 import android.os.Bundle
-import android.view.LayoutInflater
-import android.view.View
-import android.view.ViewGroup
+import android.view.*
 import androidx.appcompat.app.AppCompatActivity
 import androidx.fragment.app.Fragment
 import apps.amine.bou.readerforselfoss.R
 import kotlinx.android.synthetic.main.fragment_article.view.webcontent
-import kotlinx.android.synthetic.main.fragment_image.view.*
 
 class ImageFragment : Fragment() {
 
@@ -17,6 +14,7 @@ class ImageFragment : Fragment() {
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
+        setHasOptionsMenu(true)
 
         position = arguments!!.getInt("position")
         allImages = arguments!!.getStringArrayList("allImages")
@@ -24,13 +22,9 @@ class ImageFragment : Fragment() {
     }
 
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
-        (activity as AppCompatActivity).supportActionBar?.hide()
+        (activity as AppCompatActivity).supportActionBar?.setDisplayShowTitleEnabled(false)
         val view : View = inflater.inflate(R.layout.fragment_image, container, false)
 
-        view.backButton.setOnClickListener() {
-            fragmentManager!!.popBackStackImmediate()
-        }
-
         view.webcontent.visibility = View.VISIBLE
         view.webcontent.settings.setLoadWithOverviewMode(true)
         view.webcontent.settings.setUseWideViewPort(true)
@@ -42,8 +36,12 @@ class ImageFragment : Fragment() {
         return view
     }
 
+    override fun onCreateOptionsMenu(menu: Menu, inflater: MenuInflater) {
+                menu.clear()
+    }
+
     override fun onDestroy() {
-        (activity as AppCompatActivity).supportActionBar?.show()
+        (activity as AppCompatActivity).supportActionBar?.setDisplayShowTitleEnabled(true)
         super.onDestroy()
     }
 

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

@@ -1,23 +1,12 @@
 <?xml version="1.0" encoding="utf-8"?>
 <androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
-    android:background="@android:color/black"
     android:layout_width="match_parent"
     android:layout_height="match_parent">
 
-    <com.google.android.material.floatingactionbutton.FloatingActionButton
-        android:id="@+id/backButton"
-        style="?android:borderlessButtonStyle"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:clickable="true"
-        app:background="@android:color/transparent"
-        app:backgroundTint="@null"
-        app:rippleColor="@null"
-        app:srcCompat="?attr/homeAsUpIndicator" />
-
     <WebView
         android:id="@+id/webcontent"
         android:layout_width="match_parent"
-        android:layout_height="match_parent" />
+        android:layout_height="match_parent" >
+    </WebView>
 </androidx.coordinatorlayout.widget.CoordinatorLayout>