I have created .tmx file from tile editor. it is saved in uncomressed format. but now i wnat it in zlib compressed format.
i used Edit > Preferences but after changing it to comressed format , it is not reflecting any changes.
Thanks
I remember experiencing this as well. I think it's a bug. Try saving the file with a different name and close and reopen the TilEd again. After that the settings should apply and you will save it with the correct compression.
http://code.google.com/p/libgdx/wiki/GraphicsTileMaps says that certain libgdx backends (GWT) do not support all compressions. So be careful with that.