Use Fragment transaction extensions.

app/src/main/java/com/github/libretube/helpers/NavigationHelper.kt

@@ -10,6 +10,8 @@ import android.os.Looper
 import androidx.appcompat.app.AppCompatActivity
 import androidx.core.os.bundleOf
 import androidx.core.os.postDelayed
+import androidx.fragment.app.commitNow
+import androidx.fragment.app.replace
 import com.github.libretube.R
 import com.github.libretube.constants.IntentData
 import com.github.libretube.constants.PreferenceKeys
@@ -90,17 +92,9 @@ object NavigationHelper {
         )
 
         val activity = context as AppCompatActivity
-        activity.supportFragmentManager.beginTransaction()
+        activity.supportFragmentManager.commitNow {
-            .remove(PlayerFragment())
+            replace<PlayerFragment>(R.id.container, args = bundle)
-            .commit()
+        }
-        activity.supportFragmentManager.beginTransaction()
-            .replace(
-                R.id.container,
-                PlayerFragment().apply {
-                    arguments = bundle
-                }
-            )
-            .commitNow()
     }
 
     fun navigatePlaylist(

app/src/main/java/com/github/libretube/ui/activities/NoInternetActivity.kt

@@ -4,6 +4,7 @@ import android.content.Intent
 import android.os.Bundle
 import androidx.activity.addCallback
 import androidx.fragment.app.commit
+import androidx.fragment.app.replace
 import com.github.libretube.R
 import com.github.libretube.databinding.ActivityNointernetBinding
 import com.github.libretube.helpers.NavigationHelper
@@ -33,10 +34,10 @@ class NoInternetActivity : BaseActivity() {
         }
 
         binding.downloads.setOnClickListener {
-            supportFragmentManager.beginTransaction()
+            supportFragmentManager.commit {
-                .replace(R.id.noInternet_container, DownloadsFragment())
+                replace<DownloadsFragment>(R.id.noInternet_container)
-                .addToBackStack(null)
+                addToBackStack(null)
-                .commit()
+            }
         }
 
         setContentView(binding.root)

app/src/main/java/com/github/libretube/ui/activities/SettingsActivity.kt

@@ -24,10 +24,9 @@ class SettingsActivity : BaseActivity() {
         }
 
         if (savedInstanceState == null) {
-            supportFragmentManager
+            supportFragmentManager.commit {
-                .beginTransaction()
+                replace<MainSettings>(R.id.settings)
-                .replace(R.id.settings, MainSettings())
+            }
-                .commit()
         }
 
         // new way of dealing with back presses instead of onBackPressed()

app/src/main/java/com/github/libretube/ui/adapters/CommentsAdapter.kt

@@ -1,17 +1,19 @@
 package com.github.libretube.ui.adapters
 
 import android.annotation.SuppressLint
-import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import android.view.ViewGroup.MarginLayoutParams
 import android.widget.Toast
 import androidx.appcompat.content.res.AppCompatResources
+import androidx.core.os.bundleOf
 import androidx.core.text.parseAsHtml
 import androidx.core.view.updateLayoutParams
 import androidx.core.view.updatePadding
 import androidx.fragment.app.Fragment
+import androidx.fragment.app.commit
+import androidx.fragment.app.replace
 import androidx.recyclerview.widget.RecyclerView
 import com.github.libretube.R
 import com.github.libretube.api.JsonHelper
@@ -26,6 +28,7 @@ import com.github.libretube.helpers.ThemeHelper
 import com.github.libretube.ui.fragments.CommentsRepliesFragment
 import com.github.libretube.ui.viewholders.CommentsViewHolder
 import com.github.libretube.util.TextUtils
+import kotlinx.serialization.encodeToString
 
 class CommentsAdapter(
     private val fragment: Fragment?,
@@ -94,21 +97,15 @@ class CommentsAdapter(
             }
 
             if (!isRepliesAdapter && comment.repliesPage != null) {
-                val repliesFragment = CommentsRepliesFragment().apply {
-                    arguments = Bundle().apply {
-                        putString(IntentData.videoId, videoId)
-                        putString(
-                            IntentData.comment,
-                            JsonHelper.json.encodeToString(Comment.serializer(), comment)
-                        )
-                    }
-                }
                 root.setOnClickListener {
-                    fragment!!.parentFragmentManager
+                    val args = bundleOf(
-                        .beginTransaction()
+                        IntentData.videoId to videoId,
-                        .replace(R.id.commentFragContainer, repliesFragment)
+                        IntentData.comment to JsonHelper.json.encodeToString(comment)
-                        .addToBackStack(null)
+                    )
-                        .commit()
+                    fragment!!.parentFragmentManager.commit {
+                        replace<CommentsRepliesFragment>(R.id.commentFragContainer, args = args)
+                        addToBackStack(null)
+                    }
                 }
             }
 

app/src/main/java/com/github/libretube/ui/fragments/PlayerFragment.kt

@@ -35,6 +35,7 @@ import androidx.core.os.postDelayed
 import androidx.core.text.parseAsHtml
 import androidx.core.view.isVisible
 import androidx.fragment.app.activityViewModels
+import androidx.fragment.app.commit
 import androidx.lifecycle.Lifecycle
 import androidx.lifecycle.lifecycleScope
 import androidx.recyclerview.widget.LinearLayoutManager
@@ -1510,9 +1511,9 @@ class PlayerFragment : BaseFragment(), OnlinePlayerOptions {
     private fun killPlayerFragment() {
         viewModel.isFullscreen.value = false
         binding.playerMotionLayout.transitionToEnd()
-        mainActivity.supportFragmentManager.beginTransaction()
+        mainActivity.supportFragmentManager.commit {
-            .remove(this)
+            remove(this@PlayerFragment)
-            .commit()
+        }
 
         onDestroy()
     }

app/src/main/java/com/github/libretube/ui/preferences/MainSettings.kt

@@ -4,6 +4,7 @@ import android.os.Bundle
 import android.widget.Toast
 import androidx.annotation.StringRes
 import androidx.fragment.app.Fragment
+import androidx.fragment.app.commitNow
 import androidx.preference.Preference
 import com.github.libretube.BuildConfig
 import com.github.libretube.R
@@ -124,9 +125,9 @@ class MainSettings : BasePreferenceFragment() {
     }
 
     private fun navigateToSettingsFragment(newFragment: Fragment): Boolean {
-        parentFragmentManager.beginTransaction()
+        parentFragmentManager.commitNow {
-            .replace(R.id.settings, newFragment)
+            replace(R.id.settings, newFragment)
-            .commitNow()
+        }
         return true
     }
 }