[英]RecyclerView not scrolling inside NestedScrollView
我正在設計一個復雜的 UI,它有一個 NestedScrollView 作為父級,里面有一個 RecyclerView。 現在的問題是我無法滾動 RecyclerView 中的項目。
我嘗試過的事情
<?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"
tools:context=".screens.StudentPreview">
<androidx.cardview.widget.CardView
android:id="@+id/toolbarCV"
android:layout_width="match_parent"
android:layout_height="130dp"
android:translationY="-45dp"
app:cardCornerRadius="30dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_chainStyle="packed">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#1641A2">
<ImageView
android:id="@+id/menuIV"
android:layout_width="23dp"
android:layout_height="23dp"
android:layout_gravity="center"
android:layout_marginStart="24dp"
android:layout_marginLeft="24dp"
android:src="@drawable/ic_home"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.7" />
<TextView
android:id="@+id/featureName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_weight="1"
android:fontFamily="@font/poppins_light"
android:text="Student Preview"
android:textColor="#fff"
android:textSize="22sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.75" />
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.cardview.widget.CardView>
<androidx.core.widget.NestedScrollView
android:id="@+id/studentPreviewNSV"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_marginTop="90dp"
android:fillViewport="true"
android:visibility="gone"
app:layout_constraintTop_toTopOf="parent"
tools:visibility="visible">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<androidx.cardview.widget.CardView
android:id="@+id/avatarCV"
android:layout_width="60dp"
android:layout_height="60dp"
app:cardBackgroundColor="@color/colorPrimaryDark"
app:cardCornerRadius="40dp"
app:cardElevation="0dp"
app:layout_constraintBottom_toBottomOf="@+id/studentDetailsCL"
app:layout_constraintEnd_toStartOf="@+id/studentDetailsCL"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintHorizontal_chainStyle="packed"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="@+id/studentDetailsCL">
<ImageView
android:id="@+id/avatarIV"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="centerCrop"
android:visibility="gone"
tools:src="@drawable/avatar_sample" />
<TextView
android:id="@+id/nameInitialTV"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:fontFamily="@font/montserrat"
android:textColor="#FFF"
android:textSize="24sp"
android:textStyle="bold"
android:visibility="gone"
tools:text="AK"
tools:visibility="visible" />
</androidx.cardview.widget.CardView>
<androidx.constraintlayout.widget.ConstraintLayout
android:id="@+id/studentDetailsCL"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toEndOf="@+id/avatarCV"
app:layout_constraintTop_toTopOf="parent">
<TextView
android:id="@+id/studentNameTV"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:fontFamily="@font/montserrat"
android:textColor="#000"
android:textSize="18sp"
android:textStyle="bold"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:text="Akrit Khanna" />
<TextView
android:id="@+id/classNameTV"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:fontFamily="@font/montserrat"
android:textColor="#000"
android:textSize="15sp"
app:layout_constraintStart_toStartOf="@+id/studentNameTV"
app:layout_constraintTop_toBottomOf="@+id/studentNameTV"
tools:text="Class 8th A" />
<TextView
android:id="@+id/lastLoggedTV"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="1dp"
android:fontFamily="@font/raleway"
android:textColor="#000"
android:textSize="15sp"
android:textStyle="bold"
app:layout_constraintStart_toStartOf="@+id/classNameTV"
app:layout_constraintTop_toBottomOf="@+id/classNameTV"
tools:text="Last Logged: 30-01-2020" />
</androidx.constraintlayout.widget.ConstraintLayout>
<androidx.cardview.widget.CardView
android:id="@+id/classEnrollCV"
android:layout_width="0dp"
android:layout_height="120dp"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
android:layout_marginEnd="5dp"
android:layout_marginRight="5dp"
app:cardBackgroundColor="#F5F5F5"
app:cardCornerRadius="18dp"
app:cardElevation="3dp"
app:layout_constraintEnd_toStartOf="@+id/courseEnrollCV"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintHorizontal_chainStyle="packed"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="@+id/detailsGL">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="@+id/classEnrollCountTV"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:fontFamily="@font/raleway"
android:textColor="#000"
android:textSize="22sp"
android:textStyle="bold"
app:layout_constraintBottom_toTopOf="@+id/classEnrollTVContainerFL"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:text="1" />
<FrameLayout
android:id="@+id/classEnrollTVContainerFL"
android:layout_width="match_parent"
android:layout_height="60dp"
android:background="#D0D9EC"
app:layout_constraintBottom_toBottomOf="parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:fontFamily="@font/raleway"
android:text="Classes Enrolled"
android:textColor="#1641A2"
android:textSize="18sp" />
</FrameLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.cardview.widget.CardView>
<androidx.cardview.widget.CardView
android:id="@+id/courseEnrollCV"
android:layout_width="0dp"
android:layout_height="120dp"
android:layout_marginStart="5dp"
android:layout_marginLeft="5dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
app:cardBackgroundColor="#F5F5F5"
app:cardCornerRadius="18dp"
app:cardElevation="3dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toEndOf="@+id/classEnrollCV"
app:layout_constraintTop_toTopOf="@+id/detailsGL">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="@+id/courseEnrollCountTV"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:fontFamily="@font/raleway"
android:textColor="#000"
android:textSize="22sp"
android:textStyle="bold"
app:layout_constraintBottom_toTopOf="@+id/courseEnrollTVContainerFL"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:text="1" />
<FrameLayout
android:id="@+id/courseEnrollTVContainerFL"
android:layout_width="match_parent"
android:layout_height="60dp"
android:background="#D0D9EC"
app:layout_constraintBottom_toBottomOf="parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:fontFamily="@font/raleway"
android:text="Courses Enrolled"
android:textColor="#1641A2"
android:textSize="18sp" />
</FrameLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.cardview.widget.CardView>
<androidx.constraintlayout.widget.Guideline
android:id="@+id/detailsGL"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_begin="90dp" />
<androidx.constraintlayout.widget.ConstraintLayout
android:id="@+id/reportCL"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:background="#F5F5F5"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/classEnrollCV">
<Spinner
android:id="@+id/classOrTermSpinner"
style="@style/Base.Widget.AppCompat.Spinner.Underlined"
android:layout_width="0dp"
android:layout_height="50dp"
android:layout_marginStart="16dp"
android:layout_marginLeft="16dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
app:layout_constraintEnd_toStartOf="@+id/courseSpinner"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintHorizontal_chainStyle="packed"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<Spinner
android:id="@+id/courseSpinner"
style="@style/Base.Widget.AppCompat.Spinner.Underlined"
android:layout_width="0dp"
android:layout_height="50dp"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
android:layout_marginEnd="16dp"
android:layout_marginRight="16dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toEndOf="@+id/classOrTermSpinner"
app:layout_constraintTop_toTopOf="parent" />
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/reportRV"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/courseSpinner" />
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.core.widget.NestedScrollView>
</androidx.constraintlayout.widget.ConstraintLayout>
使用NestedScrolView
並將其添加到您的 RecyclerView:
recyclerView.setNestedScrollingEnabled(false);
recyclerView.setHasFixedSize(false);
或者這個到 XML:
android:nestedScrollingEnabled="false"
此外,它可能有助於為 recyclerView 添加方向:
android:orientation="vertical"
將NestedScrollView
中存在的所有視圖包裝到RelativeLayout
中。 例如,
<androidx.core.widget.NestedScrollView
android:id="@+id/studentPreviewNSV"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_marginTop="90dp"
android:fillViewport="true"
android:visibility="gone"
app:layout_constraintTop_toTopOf="parent"
tools:visibility="visible">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<!-- your remaining code -->
</androidx.constraintlayout.widget.ConstraintLayout>
</RelativeLayout>
</androidx.core.widget.NestedScrollView>
我通過添加android:layout_marginBottom="100dp"設法解決了這個問題無需滾動。 (如我錯了請糾正我)
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/reportRV"
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_toBottomOf="@+id/courseSpinner"
tools:listitem="@layout/report_list_layout"
android:orientation="vertical"
android:layout_marginBottom="100dp"/>
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