Unity -Uniy Common Region ( IOS, Android and Editor Only)

參考資料 https://docs.unity3d.com/Manual/PlatformDependentCompilation.html

各個版本 Region ----

#if UNITY_EDITOR
// your code
#endif

#if UNITY_IOS
  // your code
#endif

#if UNITY_ANDROID
  // your code
#endif

某個版本以上 Region ----

#if UNITY_X_Y_OR_NEWER
  // your code
#endif

  // unity version 5.3 以上

#if UNITY_5_3_OR_NEWER
  // your code
#endif

// unity version 2018.1 以上
#if UNITY_2018_1_OR_NEWER
 //your code
#endif