ConstraintLayout仅包装部分内容

Question

我有一个ConstraintLayout，只包装部分内容，我不明白为什么。下面是我的情况的图形表示：

我希望我的mainConstraintLayout包装所有内容。如果我将layout_height的mainConstraintLayout从wrap_content更改为match_parent，则会收到以下警告，但它仍然不起作用：

ScrollView大小验证：此androidx.constraintlayout.widget.ConstraintLayout应使用android：layout_height =“ wrap_content”。ScrollView子级必须在滚动维度中将其layout_width或layout_height属性设置为wrap_content而不是fill_parent或match_parent发行ID：ScrollViewSize

有人可以帮助我吗？预先感谢。

更新：xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.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:id="@+id/mainView"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@android:color/white"
    android:backgroundTint="@android:color/white"
    tools:context=".activities.EventActivity">

    <ScrollView
        android:id="@+id/scrollView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent">

        <androidx.constraintlayout.widget.ConstraintLayout
            android:id="@+id/mainConstraintLayout"
            android:layout_width="match_parent"
            android:layout_height="match_parent">

            <ImageView
                android:id="@+id/eventMainPicture"
                android:layout_width="0dp"
                android:layout_height="200dp"
                android:layout_marginBottom="10dp"
                android:contentDescription="@string/event_image_content_description"
                android:scaleType="fitXY"
                app:layout_constraintBottom_toTopOf="@+id/eventHeaderWrapper"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toTopOf="parent"
                app:srcCompat="@drawable/event_placeholder_image" />

            <androidx.constraintlayout.widget.ConstraintLayout
                android:id="@+id/eventActionWrapper"
                android:layout_width="match_parent"
                android:layout_height="50dp"
                android:layout_marginStart="15dp"
                android:layout_marginTop="10dp"
                android:layout_marginEnd="15dp"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/eventHeaderWrapper">

                <Button
                    android:id="@+id/willPartecipateButton"
                    style="@android:style/Widget.Material.Button.Inset"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:backgroundTint="@color/primaryBlue"
                    android:paddingLeft="15dp"
                    android:paddingRight="15dp"
                    android:text="@string/event_will_partecipate"
                    android:textColor="@color/primaryOrange"
                    android:textColorHighlight="@color/primaryOrange"
                    android:textColorHint="@color/primaryOrange"
                    android:textColorLink="@color/primaryOrange"
                    android:textSize="14sp"
                    app:layout_constraintEnd_toStartOf="@+id/interestedButton"
                    app:layout_constraintHorizontal_bias="0.5"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintTop_toTopOf="parent" />

                <Button
                    android:id="@+id/interestedButton"
                    style="@android:style/Widget.Material.Button.Inset"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:backgroundTint="@color/primaryOrange"
                    android:paddingLeft="15dp"
                    android:paddingRight="15dp"
                    android:text="@string/event_interested"
                    android:textColor="@color/primaryBlue"
                    android:textColorHighlight="@color/primaryOrange"
                    android:textColorHint="@color/primaryBlue"
                    android:textColorLink="@color/primaryBlue"
                    android:textSize="14sp"
                    app:layout_constraintEnd_toEndOf="parent"
                    app:layout_constraintHorizontal_bias="0.5"
                    app:layout_constraintStart_toEndOf="@+id/willPartecipateButton"
                    app:layout_constraintTop_toTopOf="parent" />

            </androidx.constraintlayout.widget.ConstraintLayout>

            <androidx.constraintlayout.widget.ConstraintLayout
                android:id="@+id/eventHeaderWrapper"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_marginStart="15dp"
                android:layout_marginTop="10dp"
                android:layout_marginEnd="15dp"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/eventMainPicture">

                <TextView
                    android:id="@+id/eventCreatedBy"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_marginTop="5dp"
                    android:text="@string/event_createad_by"
                    android:textSize="18sp"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintTop_toBottomOf="@+id/eventNamePlaceholder" />

                <TextView
                    android:id="@+id/eventCreatorName"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_marginStart="5dp"
                    android:layout_marginTop="5dp"
                    android:text="@string/event_creator_placeholder"
                    android:textSize="18sp"
                    android:textStyle="bold"
                    app:layout_constraintStart_toEndOf="@+id/eventCreatedBy"
                    app:layout_constraintTop_toBottomOf="@+id/eventNamePlaceholder" />

                <TextView
                    android:id="@+id/eventNamePlaceholder"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="@string/event_name_placeholder"
                    android:textColor="@android:color/black"
                    android:textColorHighlight="@android:color/black"
                    android:textColorHint="@android:color/black"
                    android:textColorLink="@android:color/black"
                    android:textSize="28sp"
                    android:textStyle="bold"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintTop_toTopOf="parent" />
            </androidx.constraintlayout.widget.ConstraintLayout>

            <androidx.constraintlayout.widget.ConstraintLayout
                android:id="@+id/eventInfoWrapper"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginStart="15dp"
                android:layout_marginTop="10dp"
                android:layout_marginEnd="15dp"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/eventActionWrapper">

                <ImageView
                    android:id="@+id/eventDateIcon"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintTop_toTopOf="parent"
                    app:srcCompat="@drawable/calendar_icon" />

                <ImageView
                    android:id="@+id/eventPositionIcon"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_marginTop="10dp"
                    android:layout_marginBottom="5dp"
                    app:layout_constraintBottom_toBottomOf="parent"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintTop_toBottomOf="@+id/eventDateIcon"
                    app:srcCompat="@drawable/position_icon" />

                <TextView
                    android:id="@+id/eventDate"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_marginStart="6dp"
                    android:text="@string/event_date"
                    android:textSize="16sp"
                    app:layout_constraintBottom_toBottomOf="@+id/eventDateIcon"
                    app:layout_constraintStart_toEndOf="@+id/eventDateIcon"
                    app:layout_constraintTop_toTopOf="parent" />

                <TextView
                    android:id="@+id/eventPosition"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_marginStart="6dp"
                    android:layout_marginTop="10dp"
                    android:text="@string/event_place"
                    android:textSize="16sp"
                    app:layout_constraintBottom_toBottomOf="@+id/eventPositionIcon"
                    app:layout_constraintStart_toEndOf="@+id/eventPositionIcon"
                    app:layout_constraintTop_toBottomOf="@+id/eventDate" />

            </androidx.constraintlayout.widget.ConstraintLayout>

            <androidx.constraintlayout.widget.ConstraintLayout
                android:id="@+id/eventDescriptionWrapper"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_marginStart="15dp"
                android:layout_marginTop="15dp"
                android:layout_marginEnd="15dp"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/eventInfoWrapper">


                <TextView
                    android:id="@+id/eventDescriptionTitle"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="@string/event_description_title"
                    android:textColor="@android:color/black"
                    android:textColorHighlight="@android:color/black"
                    android:textColorHint="@android:color/black"
                    android:textColorLink="@android:color/black"
                    android:textSize="20sp"
                    android:textStyle="bold"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintTop_toTopOf="parent" />

                <TextView
                    android:id="@+id/eventDescription"
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_marginTop="10dp"
                    android:text="@string/event_description"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintTop_toBottomOf="@+id/eventDescriptionTitle" />

            </androidx.constraintlayout.widget.ConstraintLayout>

            <androidx.constraintlayout.widget.ConstraintLayout
                android:id="@+id/participantsWrapper"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginStart="15dp"
                android:layout_marginTop="20dp"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toBottomOf="parent">

                <TextView
                    android:id="@+id/participantsT"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="@string/event_participants"
                    android:textColor="@android:color/black"
                    android:textColorHighlight="@android:color/black"
                    android:textColorHint="@android:color/black"
                    android:textColorLink="@android:color/black"
                    android:textSize="20sp"
                    android:textStyle="bold"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintTop_toTopOf="parent" />
            </androidx.constraintlayout.widget.ConstraintLayout>

        </androidx.constraintlayout.widget.ConstraintLayout>
    </ScrollView>

    <com.github.ybq.android.spinkit.SpinKitView
        android:id="@+id/loadingView"
        style="@style/SpinKitView.Large.CubeGrid"
        android:layout_width="74dp"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:visibility="invisible"
        app:SpinKit_Color="@color/primaryOrange"
        app:layout_constraintBottom_toBottomOf="@+id/scrollView"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="@+id/scrollView"
        app:layout_constraintTop_toTopOf="@+id/scrollView" />

</androidx.constraintlayout.widget.ConstraintLayout>

Answer 1

使用

app:layout_constraintTop_toBottomOf="@+id/eventDescriptionWrapper"

代替

app:layout_constraintTop_toBottomOf="parent"

Answer 2

您可能还想考虑使该布局扁平化。使Scrollview为父级布局，使其成为match_parent，然后将所有内容置于单个约束布局中，使其高度达到wrap_content的高度，以免打乱滚动。