From a3d786b1913195c95582e4c3031d5be6efd22cc2 Mon Sep 17 00:00:00 2001
From: serso <se.solovyev@gmail.com>
Date: Sat, 19 Mar 2016 19:05:26 +0100
Subject: [PATCH] Fix for exception

---
 .../android/calculator/preferences/PreferencesFragment.java    | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/app/src/main/java/org/solovyev/android/calculator/preferences/PreferencesFragment.java b/app/src/main/java/org/solovyev/android/calculator/preferences/PreferencesFragment.java
index e579c6fa..c7471576 100644
--- a/app/src/main/java/org/solovyev/android/calculator/preferences/PreferencesFragment.java
+++ b/app/src/main/java/org/solovyev/android/calculator/preferences/PreferencesFragment.java
@@ -244,6 +244,9 @@ public class PreferencesFragment extends org.solovyev.android.material.preferenc
         if (!supportsHeaders()) {
             return;
         }
+        if (getView() == null) {
+            return;
+        }
 
         final ListView listView = getListView();
         if (show) {