From db4ec8ac1a30f76237efce8e751529b013b34037 Mon Sep 17 00:00:00 2001
From: Steven Ng <stevenckng@google.com>
Date: Mon, 7 Jun 2021 18:37:22 +0100
Subject: [PATCH] Fix preview layout crash upon screen rotation

Preview layouts are rendered via LauncherAppWidgetHostView. These
layouts are not yet added to the launcher. And thus, there is no
LauncherAppWidgetInfo.

Test: When a preview layout is shown in the recommended widget section,
      rotate the screen. No crash is observed.
Bug: 190395009
Change-Id: Ib1d080a106681fbfe3a4293f9f51f9576ef9414b
---
 .../android/launcher3/widget/LauncherAppWidgetHostView.java   | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/com/android/launcher3/widget/LauncherAppWidgetHostView.java b/src/com/android/launcher3/widget/LauncherAppWidgetHostView.java
index 8685aae737..d9fb5f0e58 100644
--- a/src/com/android/launcher3/widget/LauncherAppWidgetHostView.java
+++ b/src/com/android/launcher3/widget/LauncherAppWidgetHostView.java
@@ -481,6 +481,10 @@ public class LauncherAppWidgetHostView extends NavigableAppWidgetHostView
             return;
         }
         LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) getTag();
+        if (info == null) {
+            // This occurs when LauncherAppWidgetHostView is used to render a preview layout.
+            return;
+        }
         // Remove and rebind the current widget (which was inflated in the wrong
         // orientation), but don't delete it from the database
         mLauncher.removeItem(this, info, false  /* deleteFromDb */);