Thank you very much !Hi gogoabc,
The rather cryptic error message indicates that ANT could not be found on your system. i.e. ANT_HOME has not been set on your environment.
While you are at it you should also make sure JDK 7 is installed. I believe you can do so via the Android SDK Manager/ Installer.
CRYENGINE V Android support is still in development. We are currently working hard on stabilizing a reworked approach on Android. This will be the groundwork for future releases to offer a much more integrated Android CRYENGINE development experience.