在xml中添加以下内容:

android:clickable="true"
android:focusable="true"
android:background="?android:attr/selectableItemBackground"

并添加到适配器(如果是您的情况)

    override fun onBindViewHolder(holder: MyViewHolder, position: Int) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            val attrs = intArrayOf(R.attr.selectableItemBackground)
            val typedArray = holder.itemView.context.obtainStyledAttributes(attrs)
            val selectableItemBackground = typedArray.getResourceId(0, 0)
            typedArray.recycle()

            holder.itemView.isClickable = true
            holder.itemView.isFocusable = true
            holder.itemView.foreground = holder.itemView.context.getDrawable(selectableItemBackground)
        }
    }

我对AppCompat并不满意，所以我编写了自己的CardView并反向移植了waves。这是在Galaxy S上运行的姜饼，所以这绝对是可能的。

要了解更多细节，请查看源代码。

For those searching for a solution to the issue of the ripple effect not working on a programmatically created CardView (or in my case custom view which extends CardView) being shown in a RecyclerView, the following worked for me. Basically declaring the XML attributes mentioned in the other answers declaratively in the XML layout file doesn't seem to work for a programmatically created CardView, or one created from a custom layout (even if root view is CardView or merge element is used), so they have to be set programmatically like so:

private class MadeUpCardViewHolder extends RecyclerView.ViewHolder {
    private MadeUpCardView cardView;

    public MadeUpCardViewHolder(View v){
        super(v);

        this.cardView = (MadeUpCardView)v;

        // Declaring in XML Layout doesn't seem to work in RecyclerViews
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            int[] attrs = new int[]{R.attr.selectableItemBackground};
            TypedArray typedArray = context.obtainStyledAttributes(attrs);
            int selectableItemBackground = typedArray.getResourceId(0, 0);
            typedArray.recycle();

            this.cardView.setForeground(context.getDrawable(selectableItemBackground));
            this.cardView.setClickable(true);
        }
    }
}

MadeupCardView将CardView Kudos扩展到TypedArray部分的答案。

对我来说，将前景添加到CardView没有工作(原因未知:/)

将相同的元素添加到它的子布局中就可以了。

代码:

<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:card_view="http://schemas.android.com/apk/res-auto"
    android:id="@+id/card_view"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_gravity="center"
    android:focusable="true"
    android:clickable="true"
    card_view:cardCornerRadius="@dimen/card_corner_radius"
    card_view:cardUseCompatPadding="true">

    <LinearLayout
        android:id="@+id/card_item"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:foreground="?android:attr/selectableItemBackground"
        android:padding="@dimen/card_padding">

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

  android:foreground="?android:attr/selectableItemBackgroundBorderless"
   android:clickable="true"
   android:focusable="true"

只工作api 21和使用这个不使用这个列表行卡视图

在xml中添加以下内容:

android:clickable="true"
android:focusable="true"
android:background="?android:attr/selectableItemBackground"

并添加到适配器(如果是您的情况)

    override fun onBindViewHolder(holder: MyViewHolder, position: Int) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            val attrs = intArrayOf(R.attr.selectableItemBackground)
            val typedArray = holder.itemView.context.obtainStyledAttributes(attrs)
            val selectableItemBackground = typedArray.getResourceId(0, 0)
            typedArray.recycle()

            holder.itemView.isClickable = true
            holder.itemView.isFocusable = true
            holder.itemView.foreground = holder.itemView.context.getDrawable(selectableItemBackground)
        }
    }