透明时带有奇怪边框的Android CardView [英] Android CardView with weird border when transparent

问题描述

我在CardView透明度和card_elevation方面遇到了一些麻烦.尝试使用透明的CardView的结果是:

I'm having some trouble with CardView transparency and card_elevation. Trying to use a CardView transparent the result is:

不透明:

我想要得到的是这样的:

What I'm trying to get is something like this:

这是我的xml:

<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:card_view="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@mipmap/eifell"
    android:padding="10dp"
    tools:context=".MainActivity">

    <ScrollView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:paddingTop="5dp"
        android:background="@android:color/transparent">

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

            <android.support.v7.widget.CardView
                android:id="@+id/newsCardView"
                android:layout_width="match_parent"
                android:layout_height="175dp"
                card_view:cardBackgroundColor="#602B608A"
                card_view:cardElevation="5dp">

                <LinearLayout
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:background="@android:color/transparent">
                </LinearLayout>

            </android.support.v7.widget.CardView>

        </LinearLayout>
    </ScrollView>

</RelativeLayout>

推荐答案

我知道我来晚了一些，但这仅仅是因为卡的默认海拔高度.将其设置为零可以解决您的问题.

I know i am a bit late, but it's just because of card default elevation. Set it to zero to solve your problem.

app:cardElevation="0dp"

这篇关于透明时带有奇怪边框的Android CardView的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！