fix (workaround) a crash in MediaFragment if one opens and closes multiple new MediaFragment via the similar tab

app/src/main/java/org/mosad/teapod/ui/activity/main/fragments/MediaFragment.kt

@@ -78,6 +78,12 @@ class MediaFragment(private val mediaIdStr: String) : Fragment() {
         super.onResume()
 
         if (runOnResume) {
+            /**
+             * FIXME
+             * this is currently also run on back press when multiple MediaFragments have
+             * been open and closed via similar tab
+             */
+
             lifecycleScope.launch {
                 model.updateOnResume()
 

app/src/main/java/org/mosad/teapod/ui/activity/main/fragments/MediaFragmentEpisodes.kt

@@ -62,7 +62,9 @@ class MediaFragmentEpisodes : Fragment() {
     @SuppressLint("NotifyDataSetChanged")
     fun updateWatchedState() {
         // model.currentPlayheads is a val mutable map -> notify dataset changed
-        adapterRecEpisodes.notifyDataSetChanged()
+        if (this::adapterRecEpisodes.isInitialized) {
+            adapterRecEpisodes.notifyDataSetChanged()
+        }
     }
 
     private fun showSeasonSelection(v: View) {