commit 0aa0f133b7b390bb6643f1a557b15b2872ea2240
author Vinit Nayak <peanutbutter@google.com> Thu Sep 12 18:15:21 2019 -0700
committer Vinit Nayak <peanutbutter@google.com> Mon Sep 16 21:04:58 2019 +0000
tree 13e27472030c768bd0e5fb68b719febe6a019178
parent 2a873c7628980444cfb2ae45311dc5181a2b2afd

Redraw legacy navigation bar paint onLayout

Navigation bar background wasn't being redrawn
when using legacy navigation bar.

Fixes: 140096278
Test: Open Sheets app, turn landscape, select
a cell, press the "Fx" button on buttom left,
turn portrait and observe no black bar.
Open Sheets app, turn landscape, open recents
and select sheets icon and go into split screen,
choose any other app, click on cell, press "Fx",
turn portrait, observe no black bar.

Change-Id: Ibfe1abdba87a0d66c68478ee206b992c933cd9ad
(cherry picked from commit 7ab1fb8f370cc87faafd4eda2d4c04791190b0e9)

core/java/com/android/internal/policy/DecorView.java

diff --git a/core/java/com/android/internal/policy/DecorView.java b/core/java/com/android/internal/policy/DecorView.java
index 7c52a40..07002d7 100644
--- a/core/java/com/android/internal/policy/DecorView.java
+++ b/core/java/com/android/internal/policy/DecorView.java
@@ -796,7 +796,9 @@
         updateElevation();
         mAllowUpdateElevation = true;
 
-        if (changed && mResizeMode == RESIZE_MODE_DOCKED_DIVIDER) {
+        if (changed
+                && (mResizeMode == RESIZE_MODE_DOCKED_DIVIDER
+                    || mDrawLegacyNavigationBarBackground)) {
             getViewRootImpl().requestInvalidateRootRenderNode();
         }
     }