Guard against updateDoze after detach

Bug: 68815183
Change-Id: I147f04af4ea1af59f95757a14de3c34021e048a5

diff --git a/core/java/android/service/dreams/DreamService.java b/core/java/android/service/dreams/DreamService.java
index 99e2c62..2b114d5 100644 (file)
--- a/core/java/android/service/dreams/DreamService.java
+++ b/core/java/android/service/dreams/DreamService.java
@@ -665,6 +665,11 @@ public class DreamService extends Service implements Window.Callback {
     }
 
     private void updateDoze() {
+        if (mWindowToken == null) {
+            Slog.w(TAG, "Updating doze without a window token.");
+            return;
+        }
+
         if (mDozing) {
             try {
                 mSandman.startDozing(mWindowToken, mDozeScreenState, mDozeScreenBrightness);