从具有平面视图层次 ConstraintLayout 的多个水平链创建垂直链
Create vertical chain from multiple horizontal chains with flat view hierarchy ConstraintLayout
我正在尝试将多个水平链接的 Button 和 TextView 垂直链接为视图集，但仍保持平面视图层次结构。这是我的初始布局和代码：
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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">
<Button
android:id="@+id/btnTopLeft"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="#eeeeee"
app:layout_constraintBottom_toTopOf="@+id/lblTopLeft"
app:layout_constraintEnd_toStartOf="@+id/btnTopRight"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:text="1"
tools:textSize="42sp" />
<TextView
android:id="@+id/lblTopLeft"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
app:layout_constraintBottom_toTopOf="@+id/btnMiddleLeft"
app:layout_constraintEnd_toEndOf="@id/btnTopLeft"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="@id/btnTopLeft"
app:layout_constraintTop_toBottomOf="@+id/btnTopLeft"
tools:text="Button 1" />
<Button
android:id="@+id/btnTopRight"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="#dddddd"
app:layout_constraintBottom_toTopOf="@+id/lblTopRight"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toEndOf="@+id/btnTopLeft"
app:layout_constraintTop_toTopOf="parent"
tools:text="2"
tools:textSize="42sp" />
<TextView
android:id="@+id/lblTopRight"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
app:layout_constraintBottom_toTopOf="@+id/btnMiddleRight"
app:layout_constraintEnd_toEndOf="@id/btnTopRight"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="@id/btnTopRight"
app:layout_constraintTop_toBottomOf="@+id/btnTopRight"
tools:text="Button 2" />
<Button
android:id="@+id/btnMiddleLeft"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="#cccccc"
app:layout_constraintBottom_toTopOf="@+id/lblMiddleLeft"
app:layout_constraintEnd_toStartOf="@+id/btnMiddleRight"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/lblTopLeft"
tools:text="3"
tools:textSize="42sp" />
<TextView
android:id="@+id/lblMiddleLeft"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
app:layout_constraintBottom_toTopOf="@+id/btnBottomLeft"
app:layout_constraintEnd_toEndOf="@id/btnMiddleLeft"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="@id/btnMiddleLeft"
app:layout_constraintTop_toBottomOf="@+id/btnMiddleLeft"
tools:text="Button 3" />
<Button
android:id="@+id/btnMiddleRight"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="#bbbbbb"
app:layout_constraintBottom_toTopOf="@+id/lblMiddleRight"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toEndOf="@+id/btnMiddleLeft"
app:layout_constraintTop_toBottomOf="@+id/lblTopRight"
tools:text="4"
tools:textSize="42sp" />
<TextView
android:id="@+id/lblMiddleRight"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
app:layout_constraintBottom_toTopOf="@+id/btnBottomRight"
app:layout_constraintEnd_toEndOf="@id/btnMiddleRight"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="@id/btnMiddleRight"
app:layout_constraintTop_toBottomOf="@+id/btnMiddleRight"
tools:text="Button 4" />
<Button
android:id="@+id/btnBottomLeft"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="#aaaaaa"
app:layout_constraintBottom_toTopOf="@+id/lblBottomLeft"
app:layout_constraintEnd_toStartOf="@+id/btnBottomRight"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/lblMiddleLeft"
tools:text="5"
tools:textSize="42sp" />
<TextView
android:id="@+id/lblBottomLeft"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="@id/btnBottomLeft"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="@id/btnBottomLeft"
app:layout_constraintTop_toBottomOf="@+id/btnBottomLeft"
tools:text="Button 5" />
<Button
android:id="@+id/btnBottomRight"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="#999999"
app:layout_constraintBottom_toTopOf="@+id/lblBottomRight"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toEndOf="@+id/btnBottomLeft"
app:layout_constraintTop_toBottomOf="@+id/lblMiddleRight"
tools:text="6"
tools:textSize="42sp" />
<TextView
android:id="@+id/lblBottomRight"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="@id/btnBottomRight"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="@id/btnBottomRight"
app:layout_constraintTop_toBottomOf="@+id/btnBottomRight"
tools:text="Button 6" />
</android.support.constraint.ConstraintLayout>
当我设置 Button 及其 TextView 的可见性时，我希望同一行上的按钮填充剩余的 space，但我希望它下方或上方的按钮保留在相同的位置，直到隐藏行上的 both 个按钮。一旦同一行上的两个按钮都被隐藏，那么我希望剩余的按钮填充剩余的 space。例如，当我隐藏 Button 和 TextView 3 时，我希望布局看起来像这样：
但目前，如果我隐藏 Button 和 TextView 3，则会发生以下情况：
这是基于我当前代码的预期行为，但我正在寻找一种方法来防止垂直链向下折叠，直到按钮 4 也被隐藏。隐藏按钮 4 后，这就是所需的结果：
我玩过 Barriers，但在任何一点放置障碍似乎都会导致按钮的动态高度复杂化，因为它会破坏垂直链。谁能提供一些关于如何使用平面视图层次结构实现此目的的见解？
将屏幕分成三个垂直链接的 Views，如下所示：
我已经设置了背景颜色以使视图更加突出，但在实际实现中它们可能是透明的或设置为不可见。
现在，添加按钮和标签，使它们垂直约束在这些视图的内部。这确实打破了垂直链，但垂直尺寸现在由底层视图的垂直链控制。按钮和标签仍然链接到 ConstraintLayout 的两侧。
按钮和标签仍然像以前一样左右调整大小。但是，现在，在一行中的所有视图都设置为 "gone."
之前，下面的按钮不会展开
当一行中的所有按钮和标签也设置为 "gone" 时，您需要将基础视图设置为 "gone"，因此您需要跟踪按钮的状态和标签在一行中。
这里是 XML:
activity_main.xml
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<View
android:id="@+id/topGroup"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="@android:color/holo_green_light"
app:layout_constraintBottom_toTopOf="@id/centerGroup"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<View
android:id="@+id/centerGroup"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="@android:color/holo_blue_light"
app:layout_constraintBottom_toTopOf="@id/bottomGroup"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/topGroup" />
<View
android:id="@+id/bottomGroup"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="@android:color/holo_orange_light"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/centerGroup" />
<Button
android:id="@+id/btnTopLeft"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="#eeeeee"
app:layout_constraintBottom_toTopOf="@+id/lblTopLeft"
app:layout_constraintEnd_toStartOf="@+id/btnTopRight"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="@id/topGroup"
tools:text="1"
tools:textSize="42sp" />
<TextView
android:id="@+id/lblTopLeft"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
app:layout_constraintBottom_toBottomOf="@+id/topGroup"
app:layout_constraintEnd_toEndOf="@id/btnTopLeft"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="@id/btnTopLeft"
app:layout_constraintTop_toBottomOf="@+id/btnTopLeft"
tools:text="Button 1" />
<Button
android:id="@+id/btnTopRight"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="#dddddd"
app:layout_constraintBottom_toTopOf="@+id/lblTopRight"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toEndOf="@+id/btnTopLeft"
app:layout_constraintTop_toTopOf="@id/topGroup"
tools:text="2"
tools:textSize="42sp" />
<TextView
android:id="@+id/lblTopRight"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
app:layout_constraintBottom_toBottomOf="@+id/topGroup"
app:layout_constraintEnd_toEndOf="@id/btnTopRight"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="@id/btnTopRight"
app:layout_constraintTop_toBottomOf="@+id/btnTopRight"
tools:text="Button 2" />
<Button
android:id="@+id/btnMiddleLeft"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="#cccccc"
app:layout_constraintBottom_toTopOf="@+id/lblMiddleLeft"
app:layout_constraintEnd_toStartOf="@+id/btnMiddleRight"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="@+id/centerGroup"
tools:text="3"
tools:textSize="42sp" />
<TextView
android:id="@+id/lblMiddleLeft"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
app:layout_constraintBottom_toBottomOf="@+id/centerGroup"
app:layout_constraintEnd_toEndOf="@id/btnMiddleLeft"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="@id/btnMiddleLeft"
app:layout_constraintTop_toBottomOf="@+id/btnMiddleLeft"
tools:text="Button 3" />
<Button
android:id="@+id/btnMiddleRight"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="#bbbbbb"
app:layout_constraintBottom_toTopOf="@+id/lblMiddleRight"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toEndOf="@+id/btnMiddleLeft"
app:layout_constraintTop_toTopOf="@+id/centerGroup"
tools:text="4"
tools:textSize="42sp" />
<TextView
android:id="@+id/lblMiddleRight"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
app:layout_constraintBottom_toBottomOf="@+id/centerGroup"
app:layout_constraintEnd_toEndOf="@id/btnMiddleRight"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="@id/btnMiddleRight"
app:layout_constraintTop_toBottomOf="@+id/btnMiddleRight"
tools:text="Button 4" />
<Button
android:id="@+id/btnBottomLeft"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="#aaaaaa"
app:layout_constraintBottom_toTopOf="@+id/lblBottomLeft"
app:layout_constraintEnd_toStartOf="@+id/btnBottomRight"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="@id/bottomGroup"
tools:text="5"
tools:textSize="42sp" />
<TextView
android:id="@+id/lblBottomLeft"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
app:layout_constraintBottom_toBottomOf="@id/bottomGroup"
app:layout_constraintEnd_toEndOf="@id/btnBottomLeft"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="@id/btnBottomLeft"
app:layout_constraintTop_toBottomOf="@+id/btnBottomLeft"
tools:text="Button 5" />
<Button
android:id="@+id/btnBottomRight"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="#999999"
app:layout_constraintBottom_toTopOf="@+id/lblBottomRight"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toEndOf="@+id/btnBottomLeft"
app:layout_constraintTop_toTopOf="@+id/bottomGroup"
tools:text="6"
tools:textSize="42sp" />
<TextView
android:id="@+id/lblBottomRight"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
app:layout_constraintBottom_toBottomOf="@id/bottomGroup"
app:layout_constraintEnd_toEndOf="@id/btnBottomRight"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="@id/btnBottomRight"
app:layout_constraintTop_toBottomOf="@+id/btnBottomRight"
tools:text="Button 6" />
</android.support.constraint.ConstraintLayout>
我正在尝试将多个水平链接的 Button 和 TextView 垂直链接为视图集，但仍保持平面视图层次结构。这是我的初始布局和代码：
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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">
<Button
android:id="@+id/btnTopLeft"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="#eeeeee"
app:layout_constraintBottom_toTopOf="@+id/lblTopLeft"
app:layout_constraintEnd_toStartOf="@+id/btnTopRight"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:text="1"
tools:textSize="42sp" />
<TextView
android:id="@+id/lblTopLeft"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
app:layout_constraintBottom_toTopOf="@+id/btnMiddleLeft"
app:layout_constraintEnd_toEndOf="@id/btnTopLeft"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="@id/btnTopLeft"
app:layout_constraintTop_toBottomOf="@+id/btnTopLeft"
tools:text="Button 1" />
<Button
android:id="@+id/btnTopRight"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="#dddddd"
app:layout_constraintBottom_toTopOf="@+id/lblTopRight"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toEndOf="@+id/btnTopLeft"
app:layout_constraintTop_toTopOf="parent"
tools:text="2"
tools:textSize="42sp" />
<TextView
android:id="@+id/lblTopRight"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
app:layout_constraintBottom_toTopOf="@+id/btnMiddleRight"
app:layout_constraintEnd_toEndOf="@id/btnTopRight"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="@id/btnTopRight"
app:layout_constraintTop_toBottomOf="@+id/btnTopRight"
tools:text="Button 2" />
<Button
android:id="@+id/btnMiddleLeft"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="#cccccc"
app:layout_constraintBottom_toTopOf="@+id/lblMiddleLeft"
app:layout_constraintEnd_toStartOf="@+id/btnMiddleRight"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/lblTopLeft"
tools:text="3"
tools:textSize="42sp" />
<TextView
android:id="@+id/lblMiddleLeft"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
app:layout_constraintBottom_toTopOf="@+id/btnBottomLeft"
app:layout_constraintEnd_toEndOf="@id/btnMiddleLeft"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="@id/btnMiddleLeft"
app:layout_constraintTop_toBottomOf="@+id/btnMiddleLeft"
tools:text="Button 3" />
<Button
android:id="@+id/btnMiddleRight"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="#bbbbbb"
app:layout_constraintBottom_toTopOf="@+id/lblMiddleRight"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toEndOf="@+id/btnMiddleLeft"
app:layout_constraintTop_toBottomOf="@+id/lblTopRight"
tools:text="4"
tools:textSize="42sp" />
<TextView
android:id="@+id/lblMiddleRight"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
app:layout_constraintBottom_toTopOf="@+id/btnBottomRight"
app:layout_constraintEnd_toEndOf="@id/btnMiddleRight"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="@id/btnMiddleRight"
app:layout_constraintTop_toBottomOf="@+id/btnMiddleRight"
tools:text="Button 4" />
<Button
android:id="@+id/btnBottomLeft"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="#aaaaaa"
app:layout_constraintBottom_toTopOf="@+id/lblBottomLeft"
app:layout_constraintEnd_toStartOf="@+id/btnBottomRight"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/lblMiddleLeft"
tools:text="5"
tools:textSize="42sp" />
<TextView
android:id="@+id/lblBottomLeft"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="@id/btnBottomLeft"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="@id/btnBottomLeft"
app:layout_constraintTop_toBottomOf="@+id/btnBottomLeft"
tools:text="Button 5" />
<Button
android:id="@+id/btnBottomRight"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="#999999"
app:layout_constraintBottom_toTopOf="@+id/lblBottomRight"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toEndOf="@+id/btnBottomLeft"
app:layout_constraintTop_toBottomOf="@+id/lblMiddleRight"
tools:text="6"
tools:textSize="42sp" />
<TextView
android:id="@+id/lblBottomRight"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="@id/btnBottomRight"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="@id/btnBottomRight"
app:layout_constraintTop_toBottomOf="@+id/btnBottomRight"
tools:text="Button 6" />
</android.support.constraint.ConstraintLayout>
当我设置 Button 及其 TextView 的可见性时，我希望同一行上的按钮填充剩余的 space，但我希望它下方或上方的按钮保留在相同的位置，直到隐藏行上的 both 个按钮。一旦同一行上的两个按钮都被隐藏，那么我希望剩余的按钮填充剩余的 space。例如，当我隐藏 Button 和 TextView 3 时，我希望布局看起来像这样：
但目前，如果我隐藏 Button 和 TextView 3，则会发生以下情况：
这是基于我当前代码的预期行为，但我正在寻找一种方法来防止垂直链向下折叠，直到按钮 4 也被隐藏。隐藏按钮 4 后，这就是所需的结果：
我玩过 Barriers，但在任何一点放置障碍似乎都会导致按钮的动态高度复杂化，因为它会破坏垂直链。谁能提供一些关于如何使用平面视图层次结构实现此目的的见解？
将屏幕分成三个垂直链接的 Views，如下所示：
我已经设置了背景颜色以使视图更加突出，但在实际实现中它们可能是透明的或设置为不可见。
现在，添加按钮和标签，使它们垂直约束在这些视图的内部。这确实打破了垂直链，但垂直尺寸现在由底层视图的垂直链控制。按钮和标签仍然链接到 ConstraintLayout 的两侧。
按钮和标签仍然像以前一样左右调整大小。但是，现在，在一行中的所有视图都设置为 "gone."
之前，下面的按钮不会展开当一行中的所有按钮和标签也设置为 "gone" 时，您需要将基础视图设置为 "gone"，因此您需要跟踪按钮的状态和标签在一行中。
这里是 XML:
activity_main.xml
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<View
android:id="@+id/topGroup"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="@android:color/holo_green_light"
app:layout_constraintBottom_toTopOf="@id/centerGroup"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<View
android:id="@+id/centerGroup"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="@android:color/holo_blue_light"
app:layout_constraintBottom_toTopOf="@id/bottomGroup"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/topGroup" />
<View
android:id="@+id/bottomGroup"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="@android:color/holo_orange_light"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/centerGroup" />
<Button
android:id="@+id/btnTopLeft"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="#eeeeee"
app:layout_constraintBottom_toTopOf="@+id/lblTopLeft"
app:layout_constraintEnd_toStartOf="@+id/btnTopRight"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="@id/topGroup"
tools:text="1"
tools:textSize="42sp" />
<TextView
android:id="@+id/lblTopLeft"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
app:layout_constraintBottom_toBottomOf="@+id/topGroup"
app:layout_constraintEnd_toEndOf="@id/btnTopLeft"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="@id/btnTopLeft"
app:layout_constraintTop_toBottomOf="@+id/btnTopLeft"
tools:text="Button 1" />
<Button
android:id="@+id/btnTopRight"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="#dddddd"
app:layout_constraintBottom_toTopOf="@+id/lblTopRight"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toEndOf="@+id/btnTopLeft"
app:layout_constraintTop_toTopOf="@id/topGroup"
tools:text="2"
tools:textSize="42sp" />
<TextView
android:id="@+id/lblTopRight"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
app:layout_constraintBottom_toBottomOf="@+id/topGroup"
app:layout_constraintEnd_toEndOf="@id/btnTopRight"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="@id/btnTopRight"
app:layout_constraintTop_toBottomOf="@+id/btnTopRight"
tools:text="Button 2" />
<Button
android:id="@+id/btnMiddleLeft"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="#cccccc"
app:layout_constraintBottom_toTopOf="@+id/lblMiddleLeft"
app:layout_constraintEnd_toStartOf="@+id/btnMiddleRight"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="@+id/centerGroup"
tools:text="3"
tools:textSize="42sp" />
<TextView
android:id="@+id/lblMiddleLeft"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
app:layout_constraintBottom_toBottomOf="@+id/centerGroup"
app:layout_constraintEnd_toEndOf="@id/btnMiddleLeft"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="@id/btnMiddleLeft"
app:layout_constraintTop_toBottomOf="@+id/btnMiddleLeft"
tools:text="Button 3" />
<Button
android:id="@+id/btnMiddleRight"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="#bbbbbb"
app:layout_constraintBottom_toTopOf="@+id/lblMiddleRight"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toEndOf="@+id/btnMiddleLeft"
app:layout_constraintTop_toTopOf="@+id/centerGroup"
tools:text="4"
tools:textSize="42sp" />
<TextView
android:id="@+id/lblMiddleRight"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
app:layout_constraintBottom_toBottomOf="@+id/centerGroup"
app:layout_constraintEnd_toEndOf="@id/btnMiddleRight"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="@id/btnMiddleRight"
app:layout_constraintTop_toBottomOf="@+id/btnMiddleRight"
tools:text="Button 4" />
<Button
android:id="@+id/btnBottomLeft"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="#aaaaaa"
app:layout_constraintBottom_toTopOf="@+id/lblBottomLeft"
app:layout_constraintEnd_toStartOf="@+id/btnBottomRight"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="@id/bottomGroup"
tools:text="5"
tools:textSize="42sp" />
<TextView
android:id="@+id/lblBottomLeft"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
app:layout_constraintBottom_toBottomOf="@id/bottomGroup"
app:layout_constraintEnd_toEndOf="@id/btnBottomLeft"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="@id/btnBottomLeft"
app:layout_constraintTop_toBottomOf="@+id/btnBottomLeft"
tools:text="Button 5" />
<Button
android:id="@+id/btnBottomRight"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="#999999"
app:layout_constraintBottom_toTopOf="@+id/lblBottomRight"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toEndOf="@+id/btnBottomLeft"
app:layout_constraintTop_toTopOf="@+id/bottomGroup"
tools:text="6"
tools:textSize="42sp" />
<TextView
android:id="@+id/lblBottomRight"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:gravity="center"
app:layout_constraintBottom_toBottomOf="@id/bottomGroup"
app:layout_constraintEnd_toEndOf="@id/btnBottomRight"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="@id/btnBottomRight"
app:layout_constraintTop_toBottomOf="@+id/btnBottomRight"
tools:text="Button 6" />
</android.support.constraint.ConstraintLayout>