I want to download NDK by SDK manager like: google developer.android.com ...
but my SDK manager didn't show NDK or even API 25. what should I do? for every simple and empty activity, I got this error
Error:The SDK Build Tools revision (23.0.3) is too low for project ':app'. Minimum required is 25.0.0 Install Build Tools 25.0.0, update version in build file and sync project
Open File
this is about Android Studio proxy settings and
Access Denied
for Iranian's IP