Android ViewPager2设置2,3中的CurrentItem，。。。半身着地

Viewpager2目前在StackOverflow中几乎没有引用，这个问题还没有回答。我使用ViewPager2进行缩放活动。当我单击第一个索引/位置上的图像时，此代码工作正常，同时单击第二个索引，它将显示如下所示：

活动

onCreate(savedInstanceState: Bundle?){

            view_pager.adapter = ZoomImageAdapter(this, images)
            view_pager.offscreenPageLimit = images.size
            // get index of image
            val index = images.indexOfLast {
                it.urlImage == image
            }
            view_pager.post {
                view_pager.setCurrentItem(index, true)
            }
            index_page.text = "${index+1}/${images.size}"
            view_pager.registerOnPageChangeCallback(object : ViewPager2.OnPageChangeCallback(){

                override fun onPageSelected(position: Int) {
                    super.onPageSelected(position)
                    index_page.text = "${position+1}/${images.size}"
                    caption_image.text = images[position].imageCaption
                }
            })

}

适配器

inner class ZoomImageAdapter(fragmentActivity: FragmentActivity,
                                 private val images: List<ImagesArticle>) : FragmentStateAdapter(fragmentActivity){

        override fun getItemCount(): Int = images.size

        override fun createFragment(position: Int): Fragment {
            return ZoomFragment.newInstance(images[position])
        }
    }

我的活动布局

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:background="#000000"
    tools:context="com.site.app.ZoomActivity">

    <androidx.viewpager2.widget.ViewPager2
        android:id="@+id/view_pager"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_above="@+id/caption_image"
        android:layout_below="@+id/index_page"
        android:transitionName="image_transition_zoom"
        app:layout_constraintBottom_toTopOf="@+id/caption_image"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/index_page" />

    <TextView
        android:id="@+id/index_page"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="@dimen/_10dp"
        android:textColor="@color/colorWhite"
        android:textSize="@dimen/_16dp"
        android:textStyle="bold"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@+id/caption_image"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:padding="15dp"
        android:text=""
        android:textAlignment="center"
        android:textColor="@android:color/white"
        android:textSize="16sp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent" />


</androidx.constraintlayout.widget.ConstraintLayout>

我不明白，我的剧本有什么问题

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:background="#000000"
    tools:context="com.site.app.ZoomActivity">

    <androidx.viewpager2.widget.ViewPager2
        android:id="@+id/view_pager"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_above="@+id/caption_image"
        android:layout_below="@+id/index_page"
        android:transitionName="image_transition_zoom"
        app:layout_constraintBottom_toTopOf="@+id/caption_image"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/index_page" />

    <TextView
        android:id="@+id/index_page"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="@dimen/_10dp"
        android:textColor="@color/colorWhite"
        android:textSize="@dimen/_16dp"
        android:textStyle="bold"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@+id/caption_image"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:padding="15dp"
        android:text=""
        android:textAlignment="center"
        android:textColor="@android:color/white"
        android:textSize="16sp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent" />


</androidx.constraintlayout.widget.ConstraintLayout>