From 92d0602a7ce9b87a2c712215d97fb8f6df2fd2c2 Mon Sep 17 00:00:00 2001
From: Jorim Jaggi <jjaggi@google.com>
Date: Thu, 29 Sep 2016 16:25:17 +0200
Subject: Fix crash if drawable doesn't have constant state

Change-Id: I2364efb9dc1446bc1a8c50abf6bd34a73c226f7e
Fixes: 31755893
---
 core/java/com/android/internal/policy/BackdropFrameRenderer.java | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/core/java/com/android/internal/policy/BackdropFrameRenderer.java b/core/java/com/android/internal/policy/BackdropFrameRenderer.java
index 619303f34c32..1abb59b006dd 100644
--- a/core/java/com/android/internal/policy/BackdropFrameRenderer.java
+++ b/core/java/com/android/internal/policy/BackdropFrameRenderer.java
@@ -110,12 +110,15 @@ public class BackdropFrameRenderer extends Thread implements Choreographer.Frame
             int statusBarColor, int navigationBarColor) {
         mDecorView = decorView;
         mResizingBackgroundDrawable = resizingBackgroundDrawable != null
+                        && resizingBackgroundDrawable.getConstantState() != null
                 ? resizingBackgroundDrawable.getConstantState().newDrawable()
                 : null;
         mCaptionBackgroundDrawable = captionBackgroundDrawableDrawable != null
+                        && captionBackgroundDrawableDrawable.getConstantState() != null
                 ? captionBackgroundDrawableDrawable.getConstantState().newDrawable()
                 : null;
         mUserCaptionBackgroundDrawable = userCaptionBackgroundDrawable != null
+                        && userCaptionBackgroundDrawable.getConstantState() != null
                 ? userCaptionBackgroundDrawable.getConstantState().newDrawable()
                 : null;
         if (mCaptionBackgroundDrawable == null) {
-- 
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