If I start my Unity Project I get this message:
Unable to find the Android SDK manager tool. Required Android packages (extra-google-m2repository) can not be installed. Android SDK path not set. Set the Android SDK property using the Unity "Edit > Preferences > External Tools" menu option on Windows or the "Unity > Preferences > External Tools" menu option on OSX. Alternatively, set the ANDROID_HOME environment variable
UnityEngine.Debug:LogError(Object)
GooglePlayServices.ResolverVer1_1:DoResolution(PlayServicesSupport, String, OverwriteConfirmation, Action)
GooglePlayServices.PlayServicesResolver:Resolve(Action)
GooglePlayServices.PlayServicesResolver:AutoResolve()
UnityEditor.EditorApplication:Internal_CallUpdateFunctions()
But I installed the complete sdk and also set the path via Preferences. What Im doing wrong? My sdk is in the same folder as UNITY.