I am Şaban, GIS developer, JavaScript enthusiast, JAVA coder.

For uploading files to server with `Retrofit 2` here is two way to manage with.

Here is creation of guid with curly braces with oracle

Here is conversion of geometry objects between custom defined CRS using JTS(Geotools)

In order to use different coordinate systems in openlayers you need to add you map object projection and displayProjection attributes.

In order to fix getting null value problem while using Context.getFilesDir() inside InstrumentationTestCase,you need to create files directorory.