Listview 无法使用 ConstraintLayout 在 RecyclerView 中滚动

Question

我有一个 RecyclerView，其中包含 ListView。我必须使用 ConstraintLayout，因为我需要为 RecyclerView 的每一行 正确对齐 TextView 和 ListView。但是当屏幕上的内容太多时，列表视图似乎无法滚动。

recyclerview_layout.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:layout_width="match_parent" android:layout_height="match_parent"> <TextView android:id="@+id/time" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="16dp" android:textColor="#0E1C2B" android:textSize="17sp" app:layout_constraintBottom_toTopOf="@+id/recyclerview_list" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintHorizontal_bias="0.498" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toTopOf="parent" app:layout_constraintVertical_bias="0.333" /> <TextView android:id="@+id/textView4" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="24dp" android:text="Date: " android:textColor="#0E1C2B" android:textSize="17sp" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintHorizontal_bias="0.207" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toTopOf="parent" /> <ListView android:id="@+id/recyclerview_list" android:layout_width="260dp" android:layout_height="wrap_content" android:layout_marginTop="8dp" app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintHorizontal_bias="0.43" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toBottomOf="@+id/textView4" app:layout_constraintVertical_bias="0.012" /> </androidx.constraintlayout.widget.ConstraintLayout>

Answer 1

You want to use RecyclerView or ListView? Here, I have added a RecyclerView with a proper constraint. Sometimes adding a wrong constraint can get you a scrolling error.

Let me know if you want another in below design

    <?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"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <TextView
        android:id="@+id/time"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="00:00"
        android:textColor="#0E1C2B"
        android:textSize="17sp"
        app:layout_constraintBottom_toBottomOf="@+id/textView4"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_chainStyle="packed"
        app:layout_constraintStart_toEndOf="@+id/textView4"
        app:layout_constraintTop_toTopOf="@+id/textView4" />

    <TextView
        android:id="@+id/textView4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="24dp"
        android:text="Date: "
        android:textColor="#0E1C2B"
        android:textSize="17sp"
        app:layout_constraintEnd_toStartOf="@+id/time"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/recyclerview_list"
        android:layout_width="260dp"
        android:layout_height="0dp"
        android:layout_marginTop="8dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView4" />

</androidx.constraintlayout.widget.ConstraintLayout>

Answer 2

*我自己的解决方案*
必须在 ListView 元素周围添加 `LinearLayout`。

Those lines with stars are which have differences with the original one.

.
决赛 recyclerview_layout.xml:

<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:layout_width="match_parent"
android:layout_height="match_parent">

---------other code are the same------------

<LinearLayout
    android:layout_width="300dp"
    **android:layout_height="wrap_content"**
    **android:orientation="vertical"**
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintHorizontal_bias="0.47"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toBottomOf="@+id/textView"
    app:layout_constraintVertical_bias="0.011">

    <ListView
        android:id="@+id/recyclerview_list"
        **android:layout_width="match_parent"**
        **android:layout_height="wrap_content"**
        tools:layout_editor_absoluteX="104dp"
        tools:layout_editor_absoluteY="59dp" />
    
</LinearLayout>

Listview 无法使用 ConstraintLayout 在 RecyclerView 中滚动

Listview not scrollable in RecyclerView using ConstraintLayout

android

android-constraintlayout