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问题描述
将嵌套滚动视图放入带圆角的材料卡视图并滚动时，会出现一个错误，即其他材料卡视图不会被剪裁，并且边缘会溢出圆角.文本视图和 viewpager 对象的角落被剪得很好.此错误出现在 api 28 及更低版本上.
When putting a nested scroll view inside a material card view with rounded corners and scrolling there is a bug where other material card views dont get clipped and there edges spill over the rounded corners. Text views and viewpager objects got there corners clipped fine. This bug appears on api 28 and below.
有没有人知道解决这个问题的方法?
Does anyone know a work around for this?
<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/fragment_workout_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="framework.presentation.workouts.WorkoutFragment"
>
<com.google.android.material.appbar.AppBarLayout
android:id="@+id/app_bar_workout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:contentInsetStart="0dp"
app:elevation="0dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<include
android:id="@+id/toolbar_workout_navigation"
layout="@layout/toolbar_home" />
</com.google.android.material.appbar.AppBarLayout>
<com.google.android.material.card.MaterialCardView
style="@style/cv_style_all_rounded"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_marginBottom="@dimen/cv_margin_bottom"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/app_bar_workout"
app:strokeColor="@color/dividerColor"
app:strokeWidth="0.5dp">
<androidx.core.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true"
android:overScrollMode="never"
>
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:id="@+id/home_header_image"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:adjustViewBounds="true"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="@drawable/home_header" />
<com.google.android.material.textview.MaterialTextView
android:id="@+id/home_title"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="32dp"
android:layout_marginTop="@dimen/header_margin_top"
android:layout_marginEnd="32dp"
android:gravity="center"
android:text="@string/home_title"
android:textSize="?attr/textAppearanceHeadline5"
android:textStyle="bold"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/home_header_image" />
<com.google.android.material.textview.MaterialTextView
android:id="@+id/home_description"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="32dp"
android:layout_marginTop="@dimen/description_margin_top"
android:layout_marginEnd="32dp"
android:gravity="center"
android:text="@string/home_description"
android:textSize="?attr/textAppearanceHeadline6"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/home_title" />
<View
android:id="@+id/divider_home"
android:layout_width="match_parent"
android:layout_height="1dp"
android:layout_marginStart="@dimen/workout_intro_left_right_margin"
android:layout_marginTop="@dimen/divider_margin_top"
android:layout_marginEnd="@dimen/workout_intro_left_right_margin"
android:background="?android:attr/dividerVertical"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/home_description" />
<androidx.viewpager2.widget.ViewPager2
android:id="@+id/quotesViewPager2"
android:layout_width="0dp"
android:layout_height="150dp"
android:layout_marginStart="@dimen/start_end_padding"
android:layout_marginTop="32dp"
android:layout_marginEnd="@dimen/start_end_padding"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/divider_home" />
<com.google.android.material.textview.MaterialTextView
android:id="@+id/tvFeaturedVideo"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="16dp"
android:layout_marginTop="32dp"
android:layout_marginEnd="16dp"
android:text="@string/featured_video"
android:textSize="?attr/textAppearanceHeadline6"
android:textStyle="bold"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/quotesViewPager2" />
<com.google.android.material.card.MaterialCardView
android:id="@+id/cvFeaturedVideo"
style="@style/cv_style_home_layout"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_marginStart="@dimen/start_end_padding"
android:layout_marginTop="8dp"
android:layout_marginEnd="@dimen/start_end_padding"
android:clipChildren="true"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/tvFeaturedVideo">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:id="@+id/featuredThumbNail"
android:layout_width="0dp"
android:layout_height="210dp"
android:layout_marginBottom="12dp"
android:adjustViewBounds="false"
android:scaleType="centerCrop"
app:layout_constraintBottom_toTopOf="@+id/featuredVideoTitle"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="@+id/featuredVideoTitle"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="32dp"
android:layout_marginEnd="32dp"
android:layout_marginBottom="12dp"
android:maxLines="1"
android:text="TextView"
android:textAlignment="center"
android:textSize="18sp"
android:textStyle="bold"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent" />
<ImageView
android:id="@+id/youtubeIcon"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:layout_constraintBottom_toBottomOf="@+id/featuredThumbNail"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="@drawable/youtube_logo_icon_150px" />
</androidx.constraintlayout.widget.ConstraintLayout>
</com.google.android.material.card.MaterialCardView>
重新创建的步骤:
约束布局>材料卡视图(主容器)>嵌套滚动视图附加材料卡片视图(足以滚动)&API 28 及以下
Constraint layout > Material card view (main container) > Nested Scroll View > Additional material card views (enough to scroll) & API 28 and below
推荐答案
在 Cardview 中，在 xml 中添加属性:
In your Cardview, add the property in your xml:
cardPreventCornerOverlap="false"
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