元素在LinearLayout中的位置

Question

我有个问题。

在LinearLayout中是否可以有两个元素，一个在另一个上？

这是我实际的XML LinearLayout。实际上，我有一个LinearLayout，其中包含元素列表（RecyclerView）和一个简单的“打开”按钮：

<LinearLayout

    android:id="@+id/linearbox"

    android:layout_width="match_parent"

    android:layout_height="wrap_content"

    android:orientation="vertical">

    <!-- Start RecyclerView -->

    <android.support.v7.widget.RecyclerView

        android:id="@+id/recyclerview"

        android:layout_width="match_parent"

        android:layout_height="match_parent"

        android:layout_gravity="center_horizontal" />

    <!-- Include Open Button -->

    <include layout="@layout/open_button" />

</LinearLayout>

我想在我的元素列表上添加一个View，我已经完成了布局。我现在只想将其包括在我的列表中：

<include layout="@layout/open_button" />

谢谢

Answer 1

正如Avijit Karmakar所建议的那样，您不能使用LinearLayout来做到这一点，您将不得不使用FrameLayout，因为它最适合您想要在一个视图之上实现另一种视图的需求。只需将您的根布局更改为FrameLayout<FrameLayout&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; android:id="@+id/linearbox"&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; android:layout_width="match_parent"&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; android:layout_height="wrap_content"&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; android:orientation="vertical">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <!-- Start RecyclerView -->&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <android.support.v7.widget.RecyclerView&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; android:id="@+id/recyclerview"&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; android:layout_width="match_parent"&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; android:layout_height="match_parent"&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; android:layout_gravity="center_horizontal" />&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <!-- Include Open Button -->&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <include layout="@layout/open_button" />&nbsp; &nbsp; &nbsp; &nbsp; </FrameLayout>