android - 在每个链节中有多个小部件的 ConstraintLayout

Question

在 ConstraintLayout 中创建链的正确方法是什么，其中每个链链接都有多个小部件？

这是我想要实现的:

我希望链条是:(简单按钮和分数)===(中等按钮和分数)===(硬按钮和分数)。

显然，传统的做法是将每个按钮和 TextView 对放入其自己的布局中，并将这些布局链接起来。但我的理解是 ConstraintLayouts 应该避免这种情况:布局内没有布局，一切都是扁平化的。可以这样做吗，还是“平面布局”规则不可行？

注意:这是简化的。我的 Activity 实际上在每个组中都有更多的组件，所以我正在寻找一个不特定于每个组件的链链接的通用解决方案。

我的 XML(其中 TextView 完全不受约束):

<?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"
                                             tools:layout_editor_absoluteX="0dp"
                                             tools:layout_editor_absoluteY="25dp">

    <Button
        android:id="@+id/main_menu_difficulty_hard"
        android:layout_height="wrap_content"
        android:layout_marginBottom="50dp"
        android:layout_marginLeft="8dp"
        android:layout_marginRight="8dp"
        android:paddingEnd="50sp"
        android:paddingStart="50sp"
        android:text="@string/hard"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/main_menu_difficulty_medium"
        app:layout_constraintVertical_chainStyle="spread_inside"/>

    <Button
        android:id="@+id/main_menu_difficulty_medium"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:paddingEnd="50sp"
        android:paddingStart="50sp"
        android:text="@string/medium"
        app:layout_constraintBottom_toTopOf="@+id/main_menu_difficulty_hard"
        app:layout_constraintTop_toBottomOf="@+id/main_menu_difficulty_easy"
        app:layout_constraintVertical_chainStyle="spread_inside"
        android:layout_marginLeft="8dp"
        app:layout_constraintLeft_toLeftOf="parent"
        android:layout_marginRight="8dp"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintHorizontal_bias="0.502"/>

    <Button
        android:id="@+id/main_menu_difficulty_easy"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginEnd="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginRight="8dp"
        android:layout_marginStart="8dp"
        android:layout_marginTop="50dp"
        android:paddingEnd="50sp"
        android:paddingStart="50sp"
        android:text="@string/easy"
        app:layout_constraintBottom_toTopOf="@+id/main_menu_difficulty_medium"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_chainStyle="spread_inside"/>

    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Best score: 20"
        tools:layout_editor_absoluteX="16dp"
        tools:layout_editor_absoluteY="328dp"/>

    <TextView
        android:id="@+id/textView3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Best score: 20"
        tools:layout_editor_absoluteX="16dp"
        tools:layout_editor_absoluteY="558dp"/>

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Best score: 20"
        tools:layout_editor_absoluteX="16dp"
        tools:layout_editor_absoluteY="98dp"/>

</android.support.constraint.ConstraintLayout>

Answer 1

好吧，这会有所帮助:

  <?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"
    tools:layout_editor_absoluteX="0dp"
    tools:layout_editor_absoluteY="25dp">

    <Button
        android:id="@+id/main_menu_difficulty_hard"
        android:layout_height="wrap_content"
        android:layout_width="match_parent"
        android:layout_marginBottom="8dp"
        android:layout_marginEnd="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginRight="8dp"
        android:layout_marginStart="8dp"
        android:layout_marginTop="8dp"
        android:paddingEnd="50sp"
        android:paddingStart="50sp"
        android:text="@string/hard"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/main_menu_difficulty_medium"
        app:layout_constraintVertical_chainStyle="spread_inside" />

    <Button
        android:id="@+id/main_menu_difficulty_medium"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginBottom="8dp"
        android:layout_marginEnd="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginRight="8dp"
        android:layout_marginStart="8dp"
        android:layout_marginTop="8dp"
        android:paddingEnd="50sp"
        android:paddingStart="50sp"
        android:text="@string/medium"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.502"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_chainStyle="spread_inside" />

    <Button
        android:id="@+id/main_menu_difficulty_easy"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginBottom="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginRight="8dp"
        android:layout_marginTop="8dp"
        android:paddingEnd="50sp"
        android:paddingStart="50sp"
        android:text="@string/easy"
        app:layout_constraintBottom_toTopOf="@+id/main_menu_difficulty_medium"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_chainStyle="spread_inside" />

    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginEnd="8dp"
        android:layout_marginStart="8dp"
        android:text="Best score: 20"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.028"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/main_menu_difficulty_medium" />

    <TextView
        android:id="@+id/textView3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginEnd="8dp"
        android:layout_marginStart="8dp"
        android:text="Best score: 20"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.028"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/main_menu_difficulty_hard" />

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginEnd="8dp"
        android:layout_marginStart="16dp"
        android:text="Best score: 20"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/main_menu_difficulty_easy" />

</android.support.constraint.ConstraintLayout>