Я хочу сделать сворачивающийся фон на основе свитка recyclerView.Если я запускаю анимацию по нажатию кнопки, все работает нормально, но если я запускаю анимацию при прокрутке, она сразу переходит в конечное состояние без анимации. видео desc
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Макет
<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:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/gray_more_white"
app:layoutDescription="@xml/collapsing_toolbar"
app:applyMotionScene="true"
app:showPaths="true">
<include
android:id="@+id/include"
layout="@layout/toolbar"
android:layout_width="0dp"
android:layout_height="wrap_content"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<com.github.florent37.shapeofview.shapes.ArcView
android:id="@+id/header_view"
android:layout_width="0dp"
android:layout_height="100dp"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="@id/include"
app:shape_arc_cropDirection="outside"
app:shape_arc_height="20dp"
app:shape_arc_position="bottom">
<View
android:id="@+id/header"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/colorPrimaryDark" />
</com.github.florent37.shapeofview.shapes.ArcView>
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/recyclerView"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/include" />
<!--unrelated to questions-->
<androidx.swiperefreshlayout.widget.SwipeRefreshLayout
android:id="@+id/swipe_view"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/include"
android:visibility="gone">
<!--<androidx.recyclerview.widget.RecyclerView-->
<!--android:id="@+id/recyclerView"-->
<!--android:layout_width="match_parent"-->
<!--android:layout_height="match_parent" />-->
</androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
MotionScene
<MotionScene xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<Transition
app:constraintSetStart="@id/start"
app:constraintSetEnd="@id/end"
app:duration="500">
<OnSwipe
app:dragDirection="dragDown"
app:moveWhenScrollAtTop="true"
app:touchAnchorId="@id/recyclerView"
app:touchAnchorSide="bottom"
app:touchRegionId="@id/recyclerView"
app:onTouchUp="autoComplete"/>
</Transition>
<ConstraintSet android:id="@+id/start">
</ConstraintSet>
<ConstraintSet android:id="@+id/end">
<Constraint android:id="@id/header_view"
android:layout_width="0dp"
android:layout_height="0dp">
</Constraint>
</ConstraintSet>