ShapeableImageView添加TextView后底部圆角半径显示异常问题

我使用了圆角半径为28dp的MaterialCardView，希望内部的ShapeableImageView四个角都设置为相同的28dp圆角。未添加TextView时，两者显示正常；但在ShapeableImageView下方添加TextView后，ShapeableImageView的底部圆角显示异常，看起来并非28dp。我通过自定义样式@style/HomeCardShape为ShapeableImageView设置圆角，相关代码如下：

布局代码 #

<?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/main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".com.example.TestActivity">
    
    <com.google.android.material.card.MaterialCardView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginStart="32dp"
        android:layout_marginTop="32dp"
        android:layout_marginEnd="32dp"
        app:cardCornerRadius="28dp"
        app:strokeWidth="3dp"
        app:strokeColor="@color/colorPrimary"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent">

        <androidx.constraintlayout.widget.ConstraintLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

            <com.google.android.material.imageview.ShapeableImageView
                android:id="@+id/shapeableImageView2"
                android:layout_width="0dp"
                android:layout_height="0dp"
                android:adjustViewBounds="true"
                android:scaleType="centerCrop"
                app:layout_constraintDimensionRatio="16:10"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toTopOf="parent"
                app:shapeAppearanceOverlay="@style/HomeCardShape"
                app:srcCompat="@drawable/card_test_image" />

            <TextView
                android:id="@+id/textView16"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginTop="8dp"
                android:layout_marginBottom="1dp"
                android:text="TextView"
                app:layout_constraintBottom_toBottomOf="parent"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/shapeableImageView2" />
        </androidx.constraintlayout.widget.ConstraintLayout>
    </com.google.android.material.card.MaterialCardView>
    
</androidx.constraintlayout.widget.ConstraintLayout>

样式代码 #

<style name="HomeCardShape">
    <item name="cornerFamily">rounded</item>
    <item name="cornerSize">28dp</item> 
</style

1. 修复样式语法错误 #

样式代码中</style>标签不完整，缺少闭合的>，修正后：

<style name="HomeCardShape">
    <item name="cornerFamily">rounded</item>
    <item name="cornerSize">28dp</item> 
</style>

2. 调整ShapeableImageView布局属性 #

• 移除android:adjustViewBounds="true"：该属性与app:layout_constraintDimensionRatio冲突，会干扰尺寸计算
• 添加底部约束：将ShapeableImageView的底部与TextView顶部绑定，确保高度计算稳定
• 优化CardView内边距：关闭兼容内边距并设置内边距为0，避免内部布局与CardView圆角边界错位

修正后的完整布局代码：

<?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/main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".com.example.TestActivity">
    
    <com.google.android.material.card.MaterialCardView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginStart="32dp"
        android:layout_marginTop="32dp"
        android:layout_marginEnd="32dp"
        android:padding="0dp"
        app:cardCornerRadius="28dp"
        app:cardUseCompatPadding="false"
        app:strokeWidth="3dp"
        app:strokeColor="@color/colorPrimary"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent">

        <androidx.constraintlayout.widget.ConstraintLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

            <com.google.android.material.imageview.ShapeableImageView
                android:id="@+id/shapeableImageView2"
                android:layout_width="0dp"
                android:layout_height="0dp"
                android:scaleType="centerCrop"
                app:layout_constraintDimensionRatio="16:10"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toTopOf="parent"
                app:layout_constraintBottom_toTopOf="@+id/textView16"
                app:shapeAppearanceOverlay="@style/HomeCardShape"
                app:srcCompat="@drawable/card_test_image" />

            <TextView
                android:id="@+id/textView16"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginTop="8dp"
                android:layout_marginBottom="16dp"
                android:text="TextView"
                app:layout_constraintBottom_toBottomOf="parent"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/shapeableImageView2" />
        </androidx.constraintlayout.widget.ConstraintLayout>
    </com.google.android.material.card.MaterialCardView>
    
</androidx.constraintlayout.widget.ConstraintLayout>

3. 效果说明 #

修正后，ShapeableImageView的四个角将稳定显示28dp圆角，不会因添加TextView而出现异常。核心原因是解决了布局约束冲突，确保ImageView的尺寸计算准确，圆角渲染不受布局变化影响。

内容的提问来源于stack exchange，提问作者adrian joshua