commit 8478aba1a2bbe1bcbb6b05824e4f21f58d79ebce
author Julia Reynolds <juliacr@google.com> Fri Jul 31 09:17:20 2015 -0400
committer Julia Reynolds <juliacr@google.com> Fri Jul 31 09:17:20 2015 -0400
tree ee70664423f5b942beb2bb7eddb1d03c39b316a5
parent d692fcf115e57fef8a15c214fb2fcde78a48b45c

Fix SysUI crash on device boot.

Bug: 22869066
Change-Id: I55ab64c430899ebc20bfc8a8e4d1e2a7cd12f0cd

packages/SystemUI/src/com/android/systemui/statusbar/phone/NavigationBarView.java

diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/NavigationBarView.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/NavigationBarView.java
index ed49f39..59cf2bf 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/NavigationBarView.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/NavigationBarView.java
@@ -370,16 +370,18 @@
         mLayoutTransitionsEnabled = enabled;
         ViewGroup navButtons = (ViewGroup) mCurrentView.findViewById(R.id.nav_buttons);
         LayoutTransition lt = navButtons.getLayoutTransition();
-        if (enabled) {
-            lt.enableTransitionType(LayoutTransition.APPEARING);
-            lt.enableTransitionType(LayoutTransition.DISAPPEARING);
-            lt.enableTransitionType(LayoutTransition.CHANGE_APPEARING);
-            lt.enableTransitionType(LayoutTransition.CHANGE_DISAPPEARING);
-        } else {
-            lt.disableTransitionType(LayoutTransition.APPEARING);
-            lt.disableTransitionType(LayoutTransition.DISAPPEARING);
-            lt.disableTransitionType(LayoutTransition.CHANGE_APPEARING);
-            lt.disableTransitionType(LayoutTransition.CHANGE_DISAPPEARING);
+        if (lt != null) {
+            if (enabled) {
+                lt.enableTransitionType(LayoutTransition.APPEARING);
+                lt.enableTransitionType(LayoutTransition.DISAPPEARING);
+                lt.enableTransitionType(LayoutTransition.CHANGE_APPEARING);
+                lt.enableTransitionType(LayoutTransition.CHANGE_DISAPPEARING);
+            } else {
+                lt.disableTransitionType(LayoutTransition.APPEARING);
+                lt.disableTransitionType(LayoutTransition.DISAPPEARING);
+                lt.disableTransitionType(LayoutTransition.CHANGE_APPEARING);
+                lt.disableTransitionType(LayoutTransition.CHANGE_DISAPPEARING);
+            }
         }
     }