Fixed crush occasionally when closing

GNSSLogger/local.properties

@@ -1,12 +0,0 @@
-## This file is automatically generated by Android Studio.
-# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
-#
-# This file must *NOT* be checked into Version Control Systems,
-# as it contains information specific to your local configuration.
-#
-# Location of the SDK. This is only used by Gradle.
-# For customization when using a Version Control System, please read the
-# header note.
-#Mon Jul 31 15:20:15 PDT 2017
-ndk.dir=/usr/local/google/home/seangao/Android/Sdk/ndk-bundle
-sdk.dir=/usr/local/google/home/seangao/Android/Sdk