Check API version

app/src/main/java/org/traccar/client/Position.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2015 - 2017 Anton Tananaev (anton.tananaev@gmail.com)
+ * Copyright 2015 - 2018 Anton Tananaev (anton.tananaev@gmail.com)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -17,6 +17,7 @@ package org.traccar.client;
 
 import android.location.Location;
 import android.location.LocationManager;
+import android.os.Build;
 
 import java.util.Date;
 
@@ -37,8 +38,10 @@ public class Position {
             accuracy = location.getAccuracy();
         }
         this.battery = battery;
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
             this.mock = location.isFromMockProvider();
         }
+    }
 
     private long id;