1 files changed, 10 insertions, 6 deletions
diff --git a/cgeo-calendar/src/cgeo/calendar/Compatibility.java b/cgeo-calendar/src/cgeo/calendar/Compatibility.java
index 8813f41..61ea636 100644
--- a/cgeo-calendar/src/cgeo/calendar/Compatibility.java
+++ b/cgeo-calendar/src/cgeo/calendar/Compatibility.java
@@ -1,23 +1,27 @@
 package cgeo.calendar;
 
+import org.eclipse.jdt.annotation.NonNull;
+
 import android.net.Uri;
 import android.os.Build;
 
 public final class Compatibility {
 
-    private final static int sdkVersion = Build.VERSION.SDK_INT;
-    private final static boolean isLevel8 = sdkVersion >= 8;
-    private final static boolean isLevel14 = sdkVersion >= 14;
+    private final static int SDK_VERSION = Build.VERSION.SDK_INT;
+    private final static boolean IS_LEVEL_8 = SDK_VERSION >= 8;
+    private final static boolean IS_LEVEL_14 = SDK_VERSION >= 14;
 
+    @NonNull
     public static Uri getCalendarProviderURI() {
-        return Uri.parse(isLevel8 ? "content://com.android.calendar/calendars" : "content://calendar/calendars");
+        return Uri.parse(IS_LEVEL_8 ? "content://com.android.calendar/calendars" : "content://calendar/calendars");
     }
 
+    @NonNull
     public static Uri getCalendarEventsProviderURI() {
-        return Uri.parse(isLevel8 ? "content://com.android.calendar/events" : "content://calendar/events");
+        return Uri.parse(IS_LEVEL_8 ? "content://com.android.calendar/events" : "content://calendar/events");
     }
 
     public static boolean isLevel14() {
-        return isLevel14;
+        return IS_LEVEL_14;
     }
 }