第二个盖住第一个视图:
在这里插入图片描述
item.layout

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<?xml version="1.0" encoding="utf-8"?>
<androidx.cardview.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="24dp"
    android:layout_height="24dp"
    android:layout_marginRight="-10dp"
    android:elevation="0dp"
    app:cardBackgroundColor="@color/white"
    app:cardCornerRadius="12dp"
    app:cardElevation="0dp">

</androidx.cardview.widget.CardView>

adapter:

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if (holder.adapterPosition == 0) {
       setMargins(holder.itemView, 0, 0, 0, 0);
}
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private fun setMargins(v: View, l: Int, t: Int, r: Int, b: Int) {
    if (v.layoutParams is ViewGroup.MarginLayoutParams) {
        val p = v.layoutParams as ViewGroup.MarginLayoutParams
        p.setMargins(l, t, r, b)
        v.requestLayout()
    }
}

layout:

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LinearLayoutManager(requireContext(), LinearLayoutManager.HORIZONTAL, false)

第一个盖住第二个视图堆叠:
在这里插入图片描述

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<?xml version="1.0" encoding="utf-8"?>
<androidx.cardview.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="24dp"
    android:layout_height="24dp"
    android:layout_marginRight="-10dp"
    android:elevation="0dp"
    app:cardBackgroundColor="@color/white"
    app:cardCornerRadius="12dp"
    app:cardElevation="0dp">

</androidx.cardview.widget.CardView>

adapter:

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if (holder.adapterPosition == 0) {
       setMargins(holder.itemView, 0, 0, 0, 0);
}
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private fun setMargins(v: View, l: Int, t: Int, r: Int, b: Int) {
    if (v.layoutParams is ViewGroup.MarginLayoutParams) {
        val p = v.layoutParams as ViewGroup.MarginLayoutParams
        p.setMargins(l, t, r, b)
        v.requestLayout()
    }
}

layout:

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LinearLayoutManager(requireContext(), LinearLayoutManager.HORIZONTAL, true)

注意:此时数据的顺序实际是反过来的如果需要正序排列需要对设置adapter的数据集合进行倒序排列.