I was trying to add shared element transition to my fragments but move transition doesn't work
val transition = TransitionInflater.from(context).inflateTransition(android.R.transition.move)
if i change android.R.transition.move to android.R.transition.explode or android.R.transition.slide_left animation will work but not the ones that are needed
i use navigation library
first fragment code:
class TimersListFragment : Fragment() {
private lateinit var binding: FragmentTimersListBinding
private lateinit var viewModel: TimerListViewModel
private lateinit var setListAdapter: SetListAdapter
override fun onCreateView(
inflater: LayoutInflater, container: ViewGroup?,
savedInstanceState: Bundle?
): View {
binding = FragmentTimersListBinding.inflate(inflater)
viewModel = ViewModelProvider(this).get(TimerListViewModel::class.java)
return binding.root
}
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
super.onViewCreated(view, savedInstanceState)
super.onStart()
setListAdapter = SetListAdapter()
setListAdapter.onItemClicked = { set, name, time ->
val extras = FragmentNavigatorExtras(name to "setName", time to "setTime")
val action = TimersListFragmentDirections.previewSet(set.setInfo.setId)
findNavController().navigate(action,extras)
}
binding.listSets.layoutManager = LinearLayoutManager(context)
binding.listSets.adapter = setListAdapter
}
}
recyclerView item layout:
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<androidx.cardview.widget.CardView
android:id="@+id/card_set_info"
style="@style/CardView.rounded"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="8dp"
android:clickable="true"
android:focusable="true"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<LinearLayout
android:id="@+id/item_card_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="?android:attr/selectableItemBackground">
<TextView
android:id="@+id/text_set_name"
android:transitionName="setName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="16dp"
android:layout_marginStart="16dp"
android:layout_marginTop="16dp"
android:textAppearance="@style/TextAppearance.AppCompat.Headline"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:text="set name" />
<TextView
android:id="@+id/text_approximate_time"
android:transitionName="setTime"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:layout_marginBottom="16dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="@+id/text_set_name"
app:layout_constraintTop_toBottomOf="@+id/text_set_name"
tools:text="TextView" />
</androidx.constraintlayout.widget.ConstraintLayout>
</LinearLayout>
</androidx.cardview.widget.CardView>
</androidx.constraintlayout.widget.ConstraintLayout>
second fragment code:
class SetPreviewFragment : Fragment() {
private lateinit var binding: FragmentSetPreviewBinding
private lateinit var viewmodel: SetPreviewViewModel
private val args: SetPreviewFragmentArgs by navArgs()
override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {
viewmodel = ViewModelProvider(this).get(SetPreviewViewModel::class.java)
viewmodel.setup(args.setId)
binding = FragmentSetPreviewBinding.inflate(inflater)
return binding.root
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
val transition = TransitionInflater.from(context).inflateTransition(android.R.transition.move)
sharedElementEnterTransition = transition
sharedElementReturnTransition = transition
}
}
second fragment layout:
<androidx.constraintlayout.motion.widget.MotionLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/motion_layout_preview"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layoutDescription="@xml/fragment_set_preview_scene"
tools:context=".screens.SetPreviewFragment">
<androidx.appcompat.widget.Toolbar
android:id="@+id/preview_toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="?attr/colorPrimary"
android:minHeight="?attr/actionBarSize"
android:theme="?attr/actionBarTheme"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:title="@string/set_preview"
app:titleTextColor="?attr/colorOnPrimary" />
<TextView
android:id="@+id/text_set_name_title"
android:transitionName="setName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="16dp"
android:layout_marginTop="16dp"
android:layout_marginEnd="16dp"
android:elevation="2dp"
android:textAppearance="@style/TextAppearance.AppCompat.Large"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/preview_toolbar"
tools:text="set name" />
<androidx.cardview.widget.CardView
android:id="@+id/cardView"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="8dp"
app:cardCornerRadius="25dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/btn_p_start">
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/rv_p_action_list"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:listitem="@layout/item_preview_action" />
</androidx.cardview.widget.CardView>
<Button
android:id="@+id/btn_p_start"
style="@style/RoundedButton50dp"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:gravity="start|center_vertical"
android:paddingHorizontal="16dp"
android:text="@string/start"
app:layout_constraintEnd_toStartOf="@+id/btn_p_edit"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/text_set_name_title" />
<TextView
android:id="@+id/text_time_on_button"
android:transitionName="setTime"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="16dp"
android:elevation="2dp"
android:textAppearance="@style/TextAppearance.AppCompat.Button"
android:textColor="?attr/colorOnPrimary"
android:translationZ="2dp"
app:layout_constraintBottom_toBottomOf="@+id/btn_p_start"
app:layout_constraintEnd_toEndOf="@+id/btn_p_start"
app:layout_constraintTop_toTopOf="@+id/btn_p_start"
tools:text="00:00" />
<ImageButton
android:id="@+id/btn_p_edit"
style="@style/RoundedButton50dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:backgroundTint="?attr/colorPrimary"
android:minWidth="50dp"
android:minHeight="50dp"
android:paddingHorizontal="12dp"
android:src="@drawable/ic_edit"
android:tint="?attr/colorOnPrimary"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toBottomOf="@+id/text_set_name_title" />
</androidx.constraintlayout.motion.widget.MotionLayout>
I face the same situation, trying to perform shared element transitions from a RecyclerView and make it work by setting a unique transitionName by code.
the unique transitionName that I use was the content of the element. maybe you can try by using the name and/or the time directly.