commit 928d8dc7e863c3c75a79f8f0ffe36a32651d5922
author Arthur Hung <arthurhung@google.com> Wed Jul 18 15:38:05 2018 +0800
committer Arthur Hung <arthurhung@google.com> Fri Jul 20 14:38:35 2018 +0800
tree 951f2f956942556758adb0768fe5b3c80b4b0ab8
parent 9d5e97315f8fc527c2b2e844300f1367dcdf17bb

Fix PIP can't touch when back to home

When findPositionForStack, consider only 2 stack exist.
One is pip and another is the stack itself.
for case that has always-on-top window exist,
max should be 0 instead of topChildPosition.

Bug: 69370884, 111581878
Test: go/wm-smoke
Test: atest DisplayContentTests
Test: atest WindowContainerTests
Change-Id: Ia36290e98263027231491d66dbe953eccb6c925c

services/core/java/com/android/server/wm/DisplayContent.java

diff --git a/services/core/java/com/android/server/wm/DisplayContent.java b/services/core/java/com/android/server/wm/DisplayContent.java
index 0ca8e1a..dcf3f88 100644
--- a/services/core/java/com/android/server/wm/DisplayContent.java
+++ b/services/core/java/com/android/server/wm/DisplayContent.java
@@ -3467,7 +3467,7 @@
             } else {
                 // Other stacks need to be below the always-on-top stacks.
                 maxPosition = belowAlwaysOnTopPosition !=
-                        POSITION_BOTTOM ? belowAlwaysOnTopPosition : topChildPosition;
+                        POSITION_BOTTOM ? belowAlwaysOnTopPosition : 0;
             }
 
             int targetPosition = requestedPosition;