小编Des*_*uff的帖子

最小SDK为21。当我在回收适配器中单击cardview时，不会发生波纹效应，而是转到下一个屏幕。recyclerview位于片段中。

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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="wrap_content"
    android:orientation="vertical">

    <android.support.v7.widget.CardView
        android:id="@+id/entire_card"
        android:layout_width="match_parent"
        android:layout_height="265dp"
        android:layout_margin="8dp"
        android:foreground="?android:attr/selectableItemBackground"
        app:cardUseCompatPadding="true"
        app:cardCornerRadius="2dp"
        >


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

            <ProgressBar
                android:id="@+id/progressbar"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_centerInParent="true"
                android:layout_centerHorizontal="true"
                android:paddingTop="120dp"
                android:visibility="visible"/>


            <ImageView
                android:id="@+id/pet_image"
                android:layout_width="match_parent"
                android:layout_height="210dp"
                android:layout_alignParentTop="true"
                android:scaleType="centerCrop"
                android:src="@drawable/placeholder"
                android:visibility="gone"
                 />

            <TextView
                android:id="@+id/pet_description"
                android:layout_width="fill_parent"
                android:layout_height="55dp"
                android:layout_below="@+id/pet_image"
                android:padding="10dp"
                android:textColor="#FFFFFF"
                android:visibility="gone"
                android:textSize="20sp"
                android:background="@color/primaryColour"
                />

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

</LinearLayout>

每个项目都有我的onClick的适配器代码。

public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
        public TextView petInfo;
        public ImageView imgURL;
        public ProgressBar progressBar;

        private Context itemContext;
        public ViewHolder(View v){
            super(v);
            imgURL = …