What kind of opaque corners? How to fix?
<?xml version="1.0" encoding="utf-8"?> <android.support.v7.widget.CardView 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" app:cardBackgroundColor="@android:color/transparent" app:cardCornerRadius="18dp"> <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:background="@android:color/transparent" android:orientation="vertical"> <LinearLayout android:layout_width="match_parent" android:layout_height="50dp" android:background="@drawable/gradient_alertsave" android:orientation="vertical"> <TextView android:id="@+id/textView" android:layout_width="match_parent" android:layout_height="match_parent" android:gravity="center" android:text="Название списка" android:textColor="#B3ffffff" android:textSize="24sp" /> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:background="#FAFAFA" android:orientation="vertical"> <EditText android:id="@+id/alertEdit" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_gravity="center_horizontal" android:layout_marginLeft="14dp" android:layout_marginRight="14dp" android:layout_marginTop="15dp" android:gravity="center_horizontal" android:inputType="textCapSentences" android:backgroundTint="#4D000000" android:textAlignment="center" android:textColor="#B3000000" android:textSize="20sp" /> <Button android:id="@+id/btnSave" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="right" android:layout_marginTop="10dp" android:background="@null" android:text="OK" android:textColor="#FD8086" android:textSize="16sp" /> </LinearLayout> </LinearLayout> </android.support.v7.widget.CardView>