How to add external library dependency to libgdx project? -

How to add external library dependency to libgdx project? -

i trying add together simple library json.org libgdx project. dependencies configured in gradle file. project not compiling longer. think problem because gwt compiler not able find source code. did happen else before? possible solution? thanks.

what errors getting ?

try issue command command line:

gradlew --refresh-dependencies

got 1 universal tween engine installation page, can help case. page text:

and importantly need refresh project dependencies through ide or running next command project directory:

libgdx