How to disable the shadow around card view in android

问题

Hello I am am working on demo application in which i am using the card view of support library. By default it is adding shadow around it. I want to remove this shadow & should looks like simple.

I tried this that is not working for me.

CardView cardView = (CardView) v.findViewById(R.id.cardView);
cardView.setElevation(0);

After doing these I am getting crash

11-06 15:12:17.018: E/AndroidRuntime(24315): FATAL EXCEPTION: main
11-06 15:12:17.018: E/AndroidRuntime(24315): Process: com.xyz, PID: 24315
11-06 15:12:17.018: E/AndroidRuntime(24315): java.lang.NoSuchMethodError: android.support.v7.widget.CardView.setElevation
11-06 15:12:17.018: E/AndroidRuntime(24315):    at com.xyz.adapters.RecycleViewAdapter.onCreateViewHolder(RecycleViewAdapter.java:85)
11-06 15:12:17.018: E/AndroidRuntime(24315):    at com.xyz.adapters.RecycleViewAdapter.onCreateViewHolder(RecycleViewAdapter.java:1)
11-06 15:12:17.018: E/AndroidRuntime(24315):    at android.support.v7.widget.RecyclerView$Adapter.createViewHolder(RecyclerView.java:2915)
11-06 15:12:17.018: E/AndroidRuntime(24315):    at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:2511)
11-06 15:12:17.018: E/AndroidRuntime(24315):    at android.support.v7.widget.LinearLayoutManager$RenderState.next(LinearLayoutManager.java:1425)
11-06 15:12:17.018: E/AndroidRuntime(24315):    at android.support.v7.widget.LinearLayoutManager$RenderState.next(LinearLayoutManager.java:1425)

layout.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:card_view="http://schemas.android.com/apk/res-auto"
    xmlns:app="http://schemas.android.com/apk/res/com.xyz"
    android:id="@+id/cardView"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_marginBottom="5dp"
    android:layout_marginLeft="5dp"
    android:layout_marginRight="5dp"
    android:orientation="horizontal" >

Thanks in advance.

回答1:

use this attribute in XML

card_view:cardElevation="0dp"

and remember add xmlns:card_view="http://schemas.android.com/tools" in your root layout.

OR you can call cardView.setCardElevation(0) to disable shadow programmatically.

cardView.setElevation() method and CardView attribute android:elevation will throw java.lang.NoSuchMethodError in platform before Android 5.0

回答2:

Try to put the elevation in Xml.

app:cardElevation="0dp"

cardView.setCardElevation(0);

And check you are using the latest CardView library.

回答3:

Just put this line inside your CardView:

app:cardElevation="0dp"

Hope it will help you.

回答4:

You can have it in XML like:

<android.support.v7.widget.CardView
    android:id="@+id/card_view"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_marginLeft="2dp"
    android:layout_marginRight="2dp"
    app:cardElevation="0dp"
    app:cardCornerRadius="0.5dp"
    app:cardPreventCornerOverlap="false"
    app:cardUseCompatPadding="true"
    >
   </android.support.v7.widget.CardView>

hope it helps you !!!

回答5:

You should first add this to the your parent layout

xmlns:card_view="http://schemas.android.com/tools"

then set the elevation like this

card_view:cardElevation="0dp"

回答6:

try like this may help you,

CardView cardView = (CardView) v.findViewById(R.id.cardView);
cardView.setCardElevation(0);

回答7:

 <android.support.v7.widget.CardView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:cardElevation="0dp"
        app:cardCornerRadius="2dp">
....`
 </android.support.v7.widget.CardView>

回答8:

You have to use the following attributes

<android.support.v7.widget.CardView
    android:id="@+id/card_view"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    app:cardElevation="0dp"
    app:cardCornerRadius="0.5dp"
    app:cardPreventCornerOverlap="false"
    >
   </android.support.v7.widget.CardView>

回答9:

use app:cardElevation="0dp", don't use app:elevation="0dp"

回答10:

CardView sets its own elevation during initialization, which will override whatever you set from XML. You should file this as a bug at chek this

@Override
public void initialize(CardViewDelegate cardView, Context context, int backgroundColor,
        float radius) {
    cardView.setBackgroundDrawable(new RoundRectDrawable(backgroundColor, radius));
    View view = (View) cardView;
    view.setClipToOutline(true);
    view.setElevation(context.getResources().getDimension(R.dimen.cardview_elevation));
}

回答11:

In my case, only setting of background alpha with suggested elevation and backgroundColor hide shadow border:

 this.setCardElevation(0);
 this.setCardBackgroundColor(getContext().getResources().getColor(android.R.color.transparent));
 this.getBackground().setAlpha(0);

回答12:

If anyone is looking for kotlin answer then this worked for me

card_layout.cardElevation = 0F

来源：https://stackoverflow.com/questions/26776058/how-to-disable-the-shadow-around-card-view-in-android

标签

android

android-cardview