我想这张照片几乎解释了它:这样的事情可能吗?

Not really, as you can't have any type of Layout with this shape. But you can cheat a bit and make user to think it is like this. Just set content in layout B in the way you want.
您可以使用 aRelativeLayout来实现这种布局。
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#00FFFF"
android:orientation="vertical" >
</LinearLayout>
<LinearLayout
android:layout_width="200dp"
android:layout_height="300dp"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:background="#FF0000"
android:orientation="vertical" >
</LinearLayout>
</RelativeLayout>
没有什么能阻止您像 Krrishnaaaa 的回答那样拥有重叠的布局。
根据Views您想要保留的内容,您可以尝试与这些类似的操作,将片段 B 拆分为两个单独的:

