Merge "Fix MixedDeviceOwnerTest test failure" into main

2 files changed, 9 insertions, 2 deletions

diff --git a/services/core/java/com/android/server/wm/RecentTasks.java b/services/core/java/com/android/server/wm/RecentTasks.java
index 33588a03b8e1..8e78d25d8373 100644
--- a/services/core/java/com/android/server/wm/RecentTasks.java
+++ b/services/core/java/com/android/server/wm/RecentTasks.java
@@ -1253,6 +1253,11 @@ class RecentTasks {
                 continue;
             }
 
+            if (otherTask.topRunningActivity() == null) {
+                // Skip if there's no running activity in the Task.
+                continue;
+            }
+
             // Stop searching if the task has higher z-ordering, or increase the index and
             // continue the search.
             if (task.compareTo(otherTask) > 0) {
diff --git a/services/tests/wmtests/src/com/android/server/wm/RecentTasksTest.java b/services/tests/wmtests/src/com/android/server/wm/RecentTasksTest.java
index f7c253d9df03..bfa191e6f724 100644
--- a/services/tests/wmtests/src/com/android/server/wm/RecentTasksTest.java
+++ b/services/tests/wmtests/src/com/android/server/wm/RecentTasksTest.java
@@ -1210,9 +1210,11 @@ public class RecentTasksTest extends WindowTestsBase {
     @Test
     public void addTask_tasksAreAddedAccordingToZOrder() {
         final Task firstTask = new TaskBuilder(mSupervisor).setTaskId(1)
-                .setWindowingMode(WINDOWING_MODE_FREEFORM).build();
+                .setWindowingMode(WINDOWING_MODE_FREEFORM)
+                .setCreateActivity(true).build();
         final Task secondTask = new TaskBuilder(mSupervisor).setTaskId(2)
-                .setWindowingMode(WINDOWING_MODE_FREEFORM).build();
+                .setWindowingMode(WINDOWING_MODE_FREEFORM)
+                .setCreateActivity(true).build();
 
         assertEquals(-1, firstTask.compareTo(secondTask));