not finding android sdk (Unity)
Solution 1:
I have same problem.
I fixed by android sdk tool version downgrade.
The steps.
Delete android sdk "tools" folder : [Your Android SDK root]/tools -> tools
Download SDK Tools: http://dl-ssl.google.com/android/repository/tools_r25.2.5-windows.zip
Extract that to Android SDK root
Build your project
Solution 2:
The issue is due to incompatibility of unity with latest Android build tools. For MacOS here's a one liner that will get it working for you:
cd $ANDROID_HOME; rm -rf tools; wget http://dl-ssl.google.com/android/repository/tools_r25.2.5-macosx.zip; unzip tools_r25.2.5-macosx.zip