From 269a1016de3994b2a4db0e1a74b32352fd21e9f5 Mon Sep 17 00:00:00 2001
From: Alan Sheridan <alan.p.sheridan@gmail.com>
Date: Tue, 8 Dec 2015 16:27:02 -0800
Subject: [PATCH] Prevent crash on null Map Projection

There are race conditions that seem to be able to result in multiple map initializations causing a null projection for a tiny amount of time, this will cause several crashes if we don't properly protect ourselves from them.
---
 .../android/clustering/view/DefaultClusterRenderer.java    | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/library/src/com/google/maps/android/clustering/view/DefaultClusterRenderer.java b/library/src/com/google/maps/android/clustering/view/DefaultClusterRenderer.java
index 6b9e0df41..8d1e8ec6b 100644
--- a/library/src/com/google/maps/android/clustering/view/DefaultClusterRenderer.java
+++ b/library/src/com/google/maps/android/clustering/view/DefaultClusterRenderer.java
@@ -264,6 +264,11 @@ public void handleMessage(Message msg) {
                 // Nothing to do.
                 return;
             }
+            Projection projection = mMap.getProjection();
+            if (projection == null) {
+                // Without a map projection we can't render clusters.
+                return;
+            }
 
             RenderTask renderTask;
             synchronized (this) {
@@ -278,7 +283,7 @@ public void run() {
                     sendEmptyMessage(TASK_FINISHED);
                 }
             });
-            renderTask.setProjection(mMap.getProjection());
+            renderTask.setProjection(projection);
             renderTask.setMapZoom(mMap.getCameraPosition().zoom);
             new Thread(renderTask).start();
         }