修复重叠折叠/展开卡片 Java

【问题标题】：Fix Overlapping Collapsing/Expanding Cards Java修复重叠折叠/展开卡片 Java
【发布时间】：2020-02-21 00:01:49
【问题描述】：

我正在使用 Android Studio 创建 2 个 CardView，它们可以在鼠标单击时展开和折叠。但是，当我展开卡片时，即使上面的卡片展开并且是重叠问题，下面的卡片也不会被推下并且仍然可见。 我该如何解决这个问题，以便正在展开的卡片下方的卡片被推下，或者正在展开信息的卡片在前面？

点击前卡片的截图：Before Clicked

点击时的屏幕截图：when clicked（如您所见，'Steven Smith 卡片仍在显示中）

注意：我确实考虑过使用 Recycler View + 适配器等，但在每张卡片中我想要不同的布局/图像（而不是像某人电话中的联系人一样的一致信息）

这是我的java代码：

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_engineering_page);

        expandableView = findViewById(R.id.expandableView);
        arrowBtn = findViewById(R.id.arrowBtn);
        cardView = findViewById(R.id.cardView);


        arrowBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (expandableView.getVisibility()==View.GONE){
                    TransitionManager.beginDelayedTransition(cardView, new AutoTransition());
                    expandableView.setVisibility(View.VISIBLE);
                    arrowBtn.setBackgroundResource(R.drawable.down_arrow);
                } else {
                    TransitionManager.beginDelayedTransition(cardView, new AutoTransition());
                    expandableView.setVisibility(View.GONE);
                    arrowBtn.setBackgroundResource(R.drawable.android_icon);
                }
            }
        });

        expandableView2 = findViewById(R.id.expandableView2);
        arrowBtn2 = findViewById(R.id.arrowBtn2);
        cardView2 = findViewById(R.id.cardView2);

        arrowBtn2.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (expandableView2.getVisibility()==View.GONE){
                    TransitionManager.beginDelayedTransition(cardView2, new AutoTransition());
                    expandableView2.setVisibility(View.VISIBLE);
                    arrowBtn2.setBackgroundResource(R.drawable.down_arrow);
                } else {
                    TransitionManager.beginDelayedTransition(cardView2, new AutoTransition());
                    expandableView2.setVisibility(View.GONE);
                    arrowBtn2.setBackgroundResource(R.drawable.android_icon);
                }
            }
        });
    }
}

这是我的 XML 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"
    tools:context=".EngineeringPage"
    android:background="#22325A">
    <android.support.v7.widget.Toolbar
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/toolbar"
        android:background="#C4C4C4"
        app:logo="@drawable/image1"
        app:title="">
    </android.support.v7.widget.Toolbar>

    <TextView
        android:id="@+id/engineeringTV"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="409dp"
        android:layout_marginEnd="111dp"
        android:layout_marginLeft="111dp"
        android:layout_marginRight="111dp"
        android:layout_marginStart="111dp"
        android:layout_marginTop="61dp"
        android:text="Engineering"
        android:textColor="@android:color/white"
        android:textSize="30sp"
        android:textStyle="bold"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <android.support.v7.widget.CardView
        android:id="@+id/cardView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        style="@style/CardView.Light"
        android:layout_marginTop="98dp"
        android:layout_marginEnd="8dp"
        android:layout_marginStart="8dp"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toTopOf="parent">
        <android.support.constraint.ConstraintLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:paddingBottom="12dp">
            <TextView
                android:id="@+id/name"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:text="Section 1"
                style="@style/TextAppearance.AppCompat.Title"
                android:layout_marginStart="12dp" />
            <Button
                android:id="@+id/arrowBtn"
                android:layout_width="30dp"
                android:layout_height="30dp"
                android:layout_marginEnd="12dp"
                android:background="@drawable/down_arrow"
                app:layout_constraintEnd_toEndOf="parent" />
            <android.support.constraint.ConstraintLayout
                android:id="@+id/expandableView"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:paddingBottom="12dp"
                android:visibility="gone"
                android:layout_marginTop="12dp"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintEnd_toEndOf="parent">
                <ImageView
                    android:id="@+id/phoneIcon"
                    android:layout_width="30dp"
                    android:layout_height="30dp"
                    android:layout_marginTop="52dp"
                    android:layout_marginStart="12dp"
                    android:src="@drawable/android_icon"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintTop_toTopOf="parent"/>

                <TextView
                    android:id="@+id/phoneNumber"
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:text="(999) 345 32 45"
                    android:layout_marginStart="32dp"
                    android:textColor="#000"
                    style="@style/TextAppearance.AppCompat.Medium"
                    app:layout_constraintTop_toTopOf="@+id/phoneIcon"
                    app:layout_constraintStart_toEndOf="@id/phoneIcon"
                    app:layout_constraintBottom_toTopOf="@+id/phoneDesc"/>

                <TextView
                    android:id="@+id/phoneDesc"
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:text="Mobile"
                    android:layout_marginStart="32dp"
                    android:textColor="#8A000000"
                    style="@style/TextAppearance.AppCompat.Body1"
                    app:layout_constraintTop_toBottomOf="@+id/phoneNumber"
                    app:layout_constraintStart_toEndOf="@id/phoneIcon"
                    app:layout_constraintBottom_toBottomOf="@+id/phoneIcon"/>

                <ImageView
                    android:id="@+id/mailIcon"
                    android:layout_width="30dp"
                    android:layout_height="30dp"
                    android:layout_marginTop="22dp"
                    android:layout_marginStart="12dp"
                    android:src="@drawable/android_icon"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintTop_toBottomOf="@+id/phoneIcon"/>

                <TextView
                    android:id="@+id/mailNumber"
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:text="workemail@gmail.com"
                    android:layout_marginStart="32dp"
                    android:textColor="#000"
                    style="@style/TextAppearance.AppCompat.Medium"
                    app:layout_constraintTop_toTopOf="@+id/mailIcon"
                    app:layout_constraintStart_toEndOf="@id/mailIcon"
                    app:layout_constraintBottom_toTopOf="@+id/mailDesc"/>

                <TextView
                    android:id="@+id/mailDesc"
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:text="Work"
                    android:layout_marginStart="32dp"
                    android:textColor="#8A000000"
                    style="@style/TextAppearance.AppCompat.Body1"
                    app:layout_constraintTop_toBottomOf="@+id/mailNumber"
                    app:layout_constraintStart_toEndOf="@id/mailIcon"
                    app:layout_constraintBottom_toBottomOf="@+id/mailIcon"/>

            </android.support.constraint.ConstraintLayout>

        </android.support.constraint.ConstraintLayout>

    </android.support.v7.widget.CardView>

    <android.support.v7.widget.CardView
        android:id="@+id/cardView2"
        style="@style/CardView.Light"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginEnd="8dp"
        android:layout_marginStart="8dp"
        android:layout_marginTop="184dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent">

        <android.support.constraint.ConstraintLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:paddingBottom="12dp">

            <TextView
                android:id="@+id/name2"
                style="@style/TextAppearance.AppCompat.Title"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_marginStart="12dp"
                android:text="Steven Smith" />

            <Button
                android:id="@+id/arrowBtn2"
                android:layout_width="30dp"
                android:layout_height="30dp"
                android:layout_marginEnd="12dp"
                android:background="@drawable/down_arrow"
                app:layout_constraintEnd_toEndOf="parent" />

            <android.support.constraint.ConstraintLayout
                android:id="@+id/expandableView2"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginTop="12dp"
                android:paddingBottom="12dp"
                android:visibility="gone"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent">

                <ImageView
                    android:id="@+id/phoneIcon2"
                    android:layout_width="30dp"
                    android:layout_height="30dp"
                    android:layout_marginStart="12dp"
                    android:layout_marginTop="52dp"
                    android:src="@drawable/android_icon"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintTop_toTopOf="parent" />

                <TextView
                    android:id="@+id/phoneNumber2"
                    style="@style/TextAppearance.AppCompat.Medium"
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_marginStart="32dp"
                    android:text="(999) 345 32 45"
                    android:textColor="#000"
                    app:layout_constraintBottom_toTopOf="@+id/phoneDesc2"
                    app:layout_constraintStart_toEndOf="@id/phoneIcon2"
                    app:layout_constraintTop_toTopOf="@+id/phoneIcon2" />

                <TextView
                    android:id="@+id/phoneDesc2"
                    style="@style/TextAppearance.AppCompat.Body1"
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_marginStart="32dp"
                    android:text="Mobile"
                    android:textColor="#8A000000"
                    app:layout_constraintBottom_toBottomOf="@+id/phoneIcon2"
                    app:layout_constraintStart_toEndOf="@id/phoneIcon2"
                    app:layout_constraintTop_toBottomOf="@+id/phoneNumber2" />

                <ImageView
                    android:id="@+id/mailIcon2"
                    android:layout_width="30dp"
                    android:layout_height="30dp"
                    android:layout_marginStart="12dp"
                    android:layout_marginTop="22dp"
                    android:src="@drawable/android_icon"
                    app:layout_constraintStart_toStartOf="parent"
                    app:layout_constraintTop_toBottomOf="@+id/phoneIcon2" />

                <TextView
                    android:id="@+id/mailNumber2"
                    style="@style/TextAppearance.AppCompat.Medium"
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_marginStart="32dp"
                    android:text="workemail@gmail.com"
                    android:textColor="#000"
                    app:layout_constraintBottom_toTopOf="@+id/mailDesc2"
                    app:layout_constraintStart_toEndOf="@id/mailIcon2"
                    app:layout_constraintTop_toTopOf="@+id/mailIcon2" />

                <TextView
                    android:id="@+id/mailDesc2"
                    style="@style/TextAppearance.AppCompat.Body1"
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_marginStart="32dp"
                    android:text="Work"
                    android:textColor="#8A000000"
                    app:layout_constraintBottom_toBottomOf="@+id/mailIcon2"
                    app:layout_constraintStart_toEndOf="@id/mailIcon2"
                    app:layout_constraintTop_toBottomOf="@+id/mailNumber2" />

            </android.support.constraint.ConstraintLayout>

        </android.support.constraint.ConstraintLayout>

    </android.support.v7.widget.CardView>


</android.support.constraint.ConstraintLayout>

【问题讨论】：

    标签： java android xml android-studio android-layout


    【解决方案1】：

    我已经修改了您的示例以使其正常工作，您需要为两个 cardViews 的父布局设置动画以使动画平滑

    java

    final ConstraintLayout content = findViewById(R.id.content_layout);

final ConstraintLayout expandableView = findViewById(R.id.expandableView);
final Button arrowBtn = findViewById(R.id.arrowBtn);
arrowBtn.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            if (expandableView.getVisibility() == View.GONE) {
                TransitionManager.beginDelayedTransition(content, new AutoTransition());
                expandableView.setVisibility(View.VISIBLE);
                arrowBtn.setBackgroundResource(R.drawable.down_arrow);
            } else {
                TransitionManager.beginDelayedTransition(content, new AutoTransition());
                expandableView.setVisibility(View.GONE);
                arrowBtn.setBackgroundResource(R.drawable.android_icon);
            }
        }
    });

final ConstraintLayout expandableView2 = findViewById(R.id.expandableView2);
final Button arrowBtn2 = findViewById(R.id.arrowBtn2);
arrowBtn2.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            if (expandableView2.getVisibility() == View.GONE) {
                TransitionManager.beginDelayedTransition(content, new AutoTransition());
                expandableView2.setVisibility(View.VISIBLE);
                arrowBtn2.setBackgroundResource(R.drawable.down_arrow);
            } else {
                TransitionManager.beginDelayedTransition(content, new AutoTransition());
                expandableView2.setVisibility(View.GONE);
                arrowBtn2.setBackgroundResource(R.drawable.android_icon);
            }
        }
    });

    xml

    <?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"
android:id="@+id/content_layout"
android:background="#22325A">
<android.support.v7.widget.Toolbar
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintTop_toTopOf="parent"
    app:layout_constraintStart_toStartOf="parent"
    android:layout_width="match_parent"
    android:layout_height="?attr/actionBarSize"
    android:id="@+id/toolbar"
    android:background="#C4C4C4"
    app:logo="@drawable/logo"
    app:title="">
</android.support.v7.widget.Toolbar>
<android.support.v7.widget.CardView
    android:id="@+id/cardView"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    style="@style/CardView.Light"
    android:layout_marginTop="98dp"
    android:layout_marginEnd="8dp"
    android:layout_marginStart="8dp"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintTop_toBottomOf="@id/toolbar">
    <android.support.constraint.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:paddingBottom="12dp">
        <TextView
            app:layout_constraintTop_toTopOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            android:id="@+id/name"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:text="Section 1"
            style="@style/TextAppearance.AppCompat.Title"
            android:layout_marginStart="12dp" />
        <Button
            android:id="@+id/arrowBtn"
            android:layout_width="30dp"
            android:layout_height="30dp"
            android:layout_marginEnd="12dp"
            android:background="@drawable/down_arrow"
            app:layout_constraintTop_toTopOf="@id/name"
            app:layout_constraintBottom_toBottomOf="@id/name"
            app:layout_constraintEnd_toEndOf="parent" />
        <android.support.constraint.ConstraintLayout
            android:id="@+id/expandableView"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:paddingBottom="12dp"
            android:visibility="gone"
            app:layout_constraintTop_toBottomOf="@id/arrowBtn"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintEnd_toEndOf="parent">
            <ImageView
                android:id="@+id/phoneIcon"
                android:layout_width="30dp"
                android:layout_height="30dp"
                android:layout_marginStart="12dp"
                android:src="@drawable/logo"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toTopOf="parent"/>

            <TextView
                android:id="@+id/phoneNumber"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:text="(999) 345 32 45"
                android:layout_marginStart="32dp"
                android:textColor="#000"
                style="@style/TextAppearance.AppCompat.Medium"
                app:layout_constraintTop_toTopOf="@+id/phoneIcon"
                app:layout_constraintStart_toEndOf="@id/phoneIcon"
                app:layout_constraintBottom_toTopOf="@+id/phoneDesc"/>

            <TextView
                android:id="@+id/phoneDesc"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:text="Mobile"
                app:layout_constraintStart_toStartOf="@id/phoneNumber"
                android:textColor="#8A000000"
                style="@style/TextAppearance.AppCompat.Body1"
                app:layout_constraintTop_toBottomOf="@+id/phoneNumber"
                app:layout_constraintStart_toEndOf="@id/phoneIcon"
                app:layout_constraintBottom_toBottomOf="@+id/phoneIcon"/>

            <ImageView
                android:id="@+id/mailIcon"
                android:layout_width="30dp"
                android:layout_height="30dp"
                android:layout_marginTop="22dp"
                android:layout_marginStart="12dp"
                android:src="@drawable/android_icon"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/phoneIcon"/>

            <TextView
                android:id="@+id/mailNumber"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:text="workemail@gmail.com"
                app:layout_constraintStart_toStartOf="@id/phoneNumber"
                android:textColor="#000"
                style="@style/TextAppearance.AppCompat.Medium"
                app:layout_constraintTop_toTopOf="@+id/mailIcon"
                app:layout_constraintStart_toEndOf="@id/mailIcon"
                app:layout_constraintBottom_toTopOf="@+id/mailDesc"/>

            <TextView
                android:id="@+id/mailDesc"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="Work"
                android:textColor="#8A000000"
                style="@style/TextAppearance.AppCompat.Body1"
                app:layout_constraintStart_toStartOf="@id/phoneNumber"
                app:layout_constraintTop_toBottomOf="@+id/mailNumber"
                app:layout_constraintBottom_toBottomOf="@+id/mailIcon"/>

        </android.support.constraint.ConstraintLayout>

    </android.support.constraint.ConstraintLayout>

</android.support.v7.widget.CardView>

<android.support.v7.widget.CardView
    android:id="@+id/cardView2"
    style="@style/CardView.Light"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:layout_marginEnd="8dp"
    android:layout_marginStart="8dp"
    android:layout_marginTop="48dp"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toBottomOf="@id/cardView">

    <android.support.constraint.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:paddingBottom="12dp">

        <TextView
            app:layout_constraintTop_toTopOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:id="@+id/name2"
            style="@style/TextAppearance.AppCompat.Title"
            android:layout_marginStart="12dp"
            android:text="Steven Smith" />

        <Button
            android:layout_width="30dp"
            android:layout_height="30dp"
            android:layout_marginEnd="12dp"
            android:background="@drawable/down_arrow"
            app:layout_constraintTop_toTopOf="@id/name2"
            app:layout_constraintBottom_toBottomOf="@id/name2"
            app:layout_constraintEnd_toEndOf="parent"
            android:id="@+id/arrowBtn2"
             />

        <android.support.constraint.ConstraintLayout
            android:id="@+id/expandableView2"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:paddingBottom="12dp"
            app:layout_constraintTop_toBottomOf="@id/arrowBtn2"
            android:visibility="gone"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent">

            <ImageView
                android:id="@+id/phoneIcon2"
                android:layout_width="30dp"
                android:layout_height="30dp"
                android:layout_marginStart="12dp"
                android:src="@drawable/logo"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toTopOf="parent"
                 />

            <TextView
                android:id="@+id/phoneNumber2"
                style="@style/TextAppearance.AppCompat.Medium"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_marginStart="32dp"
                android:text="(999) 345 32 45"
                android:textColor="#000"
                app:layout_constraintBottom_toTopOf="@+id/phoneDesc2"
                app:layout_constraintStart_toEndOf="@id/phoneIcon2"
                app:layout_constraintTop_toTopOf="@+id/phoneIcon2" />

            <TextView
                android:id="@+id/phoneDesc2"
                style="@style/TextAppearance.AppCompat.Body1"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                app:layout_constraintStart_toStartOf="@id/phoneNumber2"
                android:text="Mobile"
                android:textColor="#8A000000"
                app:layout_constraintBottom_toBottomOf="@+id/phoneIcon2"
                app:layout_constraintStart_toEndOf="@id/phoneIcon2"
                app:layout_constraintTop_toBottomOf="@+id/phoneNumber2" />

            <ImageView
                android:id="@+id/mailIcon2"
                android:layout_width="30dp"
                android:layout_height="30dp"
                android:layout_marginStart="12dp"
                android:layout_marginTop="22dp"
                android:src="@drawable/android_icon"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/phoneIcon2" />

            <TextView
                android:id="@+id/mailNumber2"
                style="@style/TextAppearance.AppCompat.Medium"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                app:layout_constraintStart_toStartOf="@id/phoneNumber2"
                android:text="workemail@gmail.com"
                android:textColor="#000"
                app:layout_constraintBottom_toTopOf="@+id/mailDesc2"
                app:layout_constraintStart_toEndOf="@id/mailIcon2"
                app:layout_constraintTop_toTopOf="@+id/mailIcon2" />

            <TextView
                android:id="@+id/mailDesc2"
                style="@style/TextAppearance.AppCompat.Body1"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="Work"
                android:textColor="#8A000000"
                app:layout_constraintStart_toStartOf="@id/phoneNumber2"
                app:layout_constraintBottom_toBottomOf="@+id/mailIcon2"
                app:layout_constraintStart_toEndOf="@id/mailIcon2"
                app:layout_constraintTop_toBottomOf="@+id/mailNumber2" />

        </android.support.constraint.ConstraintLayout>

    </android.support.constraint.ConstraintLayout>

</android.support.v7.widget.CardView>


</android.support.constraint.ConstraintLayout>

    【讨论】：

      【解决方案2】：

      只需将所有内容放在线性布局中，方向为垂直或在其他布局中，将您的底部和顶部与android:layout_below="@+id/YOUR ID"正确对齐

      【讨论】：

      • @shryshtafovych 将 android:layout_below="@+id/YOUR ID" 添加到每个元素或仅添加到我拥有的 2 个卡片视图？
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