The file 'gradlew.zip' must be unzipped before you can use AndroidStudio. It contains the required file 'gradlew.bat'. This was neccessary because some svn setups block anything that looks like an executable file, including files that end in .bat .
If you've found an error in these samples, please [file an issue](http://www.fltk.org/str.php). Patches are encouraged, and may be submitted via the same FLTK Bug & Feature system.
FLTK is provided under the terms of the [GNU Library Public License, Version 2 with exceptions](http://www.fltk.org/COPYING.php) that allow for static linking.