Android约束布局ConstraintLayout的Guideline，CardView

Android约束布局ConstraintLayout的Guideline，CardView

<?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"><androidx.constraintlayout.widget.Guidelineandroid:id="@+id/guide_line"android:layout_width="wrap_content"android:layout_height="wrap_content"android:orientation="vertical"app:layout_constraintGuide_percent="0.67" /><androidx.cardview.widget.CardViewandroid:id="@+id/card"android:layout_width="0dp"android:layout_height="0dp"app:cardBackgroundColor="@android:color/holo_orange_light"app:cardCornerRadius="20dp"app:layout_constraintDimensionRatio="1:1"app:layout_constraintEnd_toEndOf="@id/guide_line"app:layout_constraintStart_toStartOf="parent"app:layout_constraintTop_toTopOf="parent"><androidx.appcompat.widget.AppCompatImageViewandroid:layout_width="match_parent"android:layout_height="match_parent"android:scaleType="centerCrop"android:src="@drawable/ic_launcher_foreground" /></androidx.cardview.widget.CardView><androidx.cardview.widget.CardViewandroid:id="@+id/v1"android:layout_width="0dp"android:layout_height="0dp"app:cardBackgroundColor="@android:color/holo_green_light"app:cardCornerRadius="20dp"app:layout_constraintBottom_toTopOf="@id/v2"app:layout_constraintDimensionRatio="1:1"app:layout_constraintEnd_toEndOf="parent"app:layout_constraintStart_toStartOf="@id/guide_line"><ImageViewandroid:layout_width="match_parent"android:layout_height="match_parent"android:scaleType="centerCrop"android:src="@drawable/ic_launcher_foreground" /></androidx.cardview.widget.CardView><androidx.cardview.widget.CardViewandroid:id="@+id/v2"android:layout_width="0dp"android:layout_height="0dp"app:cardBackgroundColor="@android:color/holo_red_light"app:cardCornerRadius="20dp"app:layout_constraintDimensionRatio="1:1"app:layout_constraintEnd_toEndOf="parent"app:layout_constraintStart_toStartOf="@id/guide_line"app:layout_constraintTop_toBottomOf="@id/v1"><ImageViewandroid:layout_width="match_parent"android:layout_height="match_parent"android:scaleType="centerCrop"android:src="@drawable/ic_launcher_foreground" /></androidx.cardview.widget.CardView>
</androidx.constraintlayout.widget.ConstraintLayout>

约束布局里面，用到match_parent的地方，可以考虑换成0dp试试。

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