From c5db55023bf8b0ce3773e477635818ca86a9ac15 Mon Sep 17 00:00:00 2001
From: wilsonshih <wilsonshih@google.com>
Date: Thu, 1 Apr 2021 19:41:46 +0800
Subject: [PATCH] Ignore windowDisablePreview when launching from system
 surface.

Ignore windowDisablePreview flag if the activity is launched from
system surface, which include system uid, home and system ui.

Bug: 182879994
Test: CTS pass without been affect.
Change-Id: I7b9eaf92aa59a7dea0e5ce4f18c847adedd5b742
---
 .../java/com/android/server/wm/ActivityRecord.java   | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/services/core/java/com/android/server/wm/ActivityRecord.java b/services/core/java/com/android/server/wm/ActivityRecord.java
index 01a46b311740c..376595b95c9d8 100644
--- a/services/core/java/com/android/server/wm/ActivityRecord.java
+++ b/services/core/java/com/android/server/wm/ActivityRecord.java
@@ -1887,6 +1887,14 @@ final class ActivityRecord extends WindowToken implements WindowManagerService.A
         return selectedTheme;
     }
 
+    // Whether this activity launched from system or Home or SystemUI
+    private boolean launchedFromSystemSurface() {
+        return launchedFromUid == Process.SYSTEM_UID || launchedFromUid == Process.ROOT_UID
+                || launchedFromHomeProcess
+                || mAtmService.getSysUiServiceComponentLocked().getPackageName().equals(
+                        launchedFromPackage);
+    }
+
     private boolean validateStartingWindowTheme(String pkg, int theme) {
         // If this is a translucent window, then don't show a starting window -- the current
         // effect (a full-screen opaque starting window that fades away to the real contents
@@ -1913,7 +1921,9 @@ final class ActivityRecord extends WindowToken implements WindowManagerService.A
                     "Translucent=%s Floating=%s ShowWallpaper=%s Disable=%s",
                     windowIsTranslucent, windowIsFloating, windowShowWallpaper,
                     windowDisableStarting);
-            if (windowIsTranslucent || windowIsFloating || windowDisableStarting) {
+            // If this activity is launched from system surface, ignore windowDisableStarting
+            if (windowIsTranslucent || windowIsFloating
+                    || (windowDisableStarting && !launchedFromSystemSurface())) {
                 return false;
             }
             if (windowShowWallpaper