diff --git a/core/java/com/android/internal/widget/NotificationVanishingFrameLayout.java b/core/java/com/android/internal/widget/NotificationVanishingFrameLayout.java
new file mode 100644
index 0000000000000..742bdfdde7560
--- /dev/null
+++ b/core/java/com/android/internal/widget/NotificationVanishingFrameLayout.java
@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.internal.widget;
+
+import android.annotation.Nullable;
+import android.content.Context;
+import android.util.AttributeSet;
+import android.view.View;
+import android.widget.FrameLayout;
+import android.widget.RemoteViews;
+
+/**
+ * This view will measure itself as having 0 size if all of its children are {@link #GONE}.
+ * Otherwise it acts like a normal {@link FrameLayout}.
+ */
+@RemoteViews.RemoteView
+public class NotificationVanishingFrameLayout extends FrameLayout {
+ public NotificationVanishingFrameLayout(Context context) {
+ this(context, null, 0, 0);
+ }
+
+ public NotificationVanishingFrameLayout(Context context, @Nullable AttributeSet attrs) {
+ this(context, attrs, 0, 0);
+ }
+
+ public NotificationVanishingFrameLayout(Context context, @Nullable AttributeSet attrs,
+ int defStyleAttr) {
+ this(context, attrs, defStyleAttr, 0);
+ }
+
+ public NotificationVanishingFrameLayout(Context context, AttributeSet attrs, int defStyleAttr,
+ int defStyleRes) {
+ super(context, attrs, defStyleAttr, defStyleRes);
+ }
+
+ @Override
+ protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+ if (allChildrenGone()) {
+ int zeroSpec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.EXACTLY);
+ super.onMeasure(zeroSpec, zeroSpec);
+ } else {
+ super.onMeasure(widthMeasureSpec, heightMeasureSpec);
+ }
+ }
+
+ private boolean allChildrenGone() {
+ final int childCount = getChildCount();
+ for (int i = 0; i < childCount; i++) {
+ final View child = getChildAt(i);
+ if (child != null && child.getVisibility() != GONE) {
+ return false;
+ }
+ }
+ return true;
+ }
+}
diff --git a/core/res/res/layout/notification_template_material_base.xml b/core/res/res/layout/notification_template_material_base.xml
index fa7b1c90dfac3..b83611bcc1770 100644
--- a/core/res/res/layout/notification_template_material_base.xml
+++ b/core/res/res/layout/notification_template_material_base.xml
@@ -138,12 +138,20 @@
android:orientation="vertical"
>
-
+ >
+
+
+