Improved smoothness of animations to fragments with recyclerviews

app/src/main/java/org/linphone/activities/main/chat/fragments/ChatRoomCreationFragment.kt

@@ -70,6 +70,15 @@ class ChatRoomCreationFragment : SecureFragment<ChatRoomCreationFragmentBinding>
         adapter.updateSecurity(viewModel.isEncrypted.value == true)
         binding.contactsList.adapter = adapter
 
+        // To ensure animation will be smooth
+        binding.contactsList.apply {
+            postponeEnterTransition()
+            viewTreeObserver.addOnPreDrawListener {
+                startPostponedEnterTransition()
+                true
+            }
+        }
+
         val layoutManager = LinearLayoutManager(activity)
         binding.contactsList.layoutManager = layoutManager
 

app/src/main/java/org/linphone/activities/main/chat/fragments/DetailChatRoomFragment.kt

@@ -121,6 +121,15 @@ class DetailChatRoomFragment : MasterFragment<ChatRoomDetailFragmentBinding, Cha
         binding.chatMessagesList.adapter = adapter
         adapter.registerAdapterDataObserver(observer)
 
+        // To ensure animation will be smooth
+        binding.chatMessagesList.apply {
+            postponeEnterTransition()
+            viewTreeObserver.addOnPreDrawListener {
+                startPostponedEnterTransition()
+                true
+            }
+        }
+
         val layoutManager = LinearLayoutManager(activity)
         layoutManager.stackFromEnd = true
         binding.chatMessagesList.layoutManager = layoutManager

app/src/main/java/org/linphone/activities/main/chat/fragments/GroupInfoFragment.kt

@@ -76,6 +76,15 @@ class GroupInfoFragment : SecureFragment<ChatRoomGroupInfoFragmentBinding>() {
             )
         binding.participants.adapter = adapter
 
+        // To ensure animation will be smooth
+        binding.participants.apply {
+            postponeEnterTransition()
+            viewTreeObserver.addOnPreDrawListener {
+                startPostponedEnterTransition()
+                true
+            }
+        }
+
         val layoutManager = LinearLayoutManager(activity)
         binding.participants.layoutManager = layoutManager
 

app/src/main/java/org/linphone/activities/main/chat/fragments/ImdnFragment.kt

@@ -81,6 +81,15 @@ class ImdnFragment : SecureFragment<ChatRoomImdnFragmentBinding>() {
         adapter = ImdnAdapter(viewLifecycleOwner)
         binding.participantsList.adapter = adapter
 
+        // To ensure animation will be smooth
+        binding.participantsList.apply {
+            postponeEnterTransition()
+            viewTreeObserver.addOnPreDrawListener {
+                startPostponedEnterTransition()
+                true
+            }
+        }
+
         val layoutManager = LinearLayoutManager(activity)
         binding.participantsList.layoutManager = layoutManager
 

app/src/main/java/org/linphone/activities/main/chat/fragments/MasterChatRoomsFragment.kt

@@ -89,6 +89,15 @@ class MasterChatRoomsFragment : MasterFragment<ChatRoomMasterFragmentBinding, Ch
         adapter.registerAdapterDataObserver(observer)
         binding.chatList.adapter = adapter
 
+        // To ensure animation will be smooth
+        binding.chatList.apply {
+            postponeEnterTransition()
+            viewTreeObserver.addOnPreDrawListener {
+                startPostponedEnterTransition()
+                true
+            }
+        }
+
         val layoutManager = LinearLayoutManager(activity)
         binding.chatList.layoutManager = layoutManager
 

app/src/main/java/org/linphone/activities/main/contact/fragments/MasterContactsFragment.kt

@@ -74,6 +74,15 @@ class MasterContactsFragment : MasterFragment<ContactMasterFragmentBinding, Cont
         _adapter = ContactsListAdapter(listSelectionViewModel, viewLifecycleOwner)
         binding.contactsList.adapter = adapter
 
+        // To ensure animation will be smooth
+        binding.contactsList.apply {
+            postponeEnterTransition()
+            viewTreeObserver.addOnPreDrawListener {
+                startPostponedEnterTransition()
+                true
+            }
+        }
+
         binding.setEditClickListener {
             if (PermissionHelper.get().hasWriteContactsPermission()) {
                 listSelectionViewModel.isEditionEnabled.value = true

app/src/main/java/org/linphone/activities/main/history/fragments/MasterCallLogsFragment.kt

@@ -81,6 +81,15 @@ class MasterCallLogsFragment : MasterFragment<HistoryMasterFragmentBinding, Call
         adapter.registerAdapterDataObserver(observer)
         binding.callLogsList.adapter = adapter
 
+        // To ensure animation will be smooth
+        binding.callLogsList.apply {
+            postponeEnterTransition()
+            viewTreeObserver.addOnPreDrawListener {
+                startPostponedEnterTransition()
+                true
+            }
+        }
+
         binding.setEditClickListener {
             listSelectionViewModel.isEditionEnabled.value = true
         }

app/src/main/java/org/linphone/activities/main/recordings/fragments/RecordingsFragment.kt

@@ -57,6 +57,15 @@ class RecordingsFragment : MasterFragment<RecordingsFragmentBinding, RecordingsL
         _adapter = RecordingsListAdapter(listSelectionViewModel, viewLifecycleOwner)
         binding.recordingsList.adapter = adapter
 
+        // To ensure animation will be smooth
+        binding.recordingsList.apply {
+            postponeEnterTransition()
+            viewTreeObserver.addOnPreDrawListener {
+                startPostponedEnterTransition()
+                true
+            }
+        }
+
         val layoutManager = LinearLayoutManager(activity)
         binding.recordingsList.layoutManager = layoutManager