From f3c8c3dee60153f471312e21acac8b3a3cddd7dc Mon Sep 17 00:00:00 2001
From: Andy McFadden <fadden@android.com>
Date: Thu, 22 May 2014 11:30:11 -0700
Subject: [PATCH] Fix scheduled-swap crash

It turns out that, with the right timing, onItemSelected() can be
called while the activity is paused.
---
 src/com/android/grafika/ScheduledSwapActivity.java | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/com/android/grafika/ScheduledSwapActivity.java b/src/com/android/grafika/ScheduledSwapActivity.java
index 18d40204..b801533f 100644
--- a/src/com/android/grafika/ScheduledSwapActivity.java
+++ b/src/com/android/grafika/ScheduledSwapActivity.java
@@ -262,7 +262,10 @@ public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) {
             throw new RuntimeException("Unknown spinner");
         }
 
-        if (updated) {
+        if (mRenderThread == null) {
+            // huh
+            Log.d(TAG, "In onItemSelected while the activity is paused");
+        } else if (updated) {
             RenderHandler rh = mRenderThread.getHandler();
             if (rh != null) {
                 rh.sendSetParameters(mUpdatePatternIndex, mFramesAheadIndex);