error: could not find gradle wrapper within android sdk. might need to update your android sdk
cordova, gradle
Solution
If you have Android Studio installed, try to copy the templates directory of Android Studio
C:\Program Files\Android\Android Studio\plugins\android\lib\templates
to your android sdk tools directory:
C:\Android\sdk\tools
This did the trick for me :)
Problem
build-tools is: android-5.1 platform-tools updated my platforms are android-5.1 android-17