In the end all I needed to do was to clear the caches and restart everything. • I deleted the ~/.gradle/ directory • I then restarted AndroidStudio with the 'File' > 'Invalidate Caches / Restart.' After this I started AndroidStudio and loaded the project again, and it worked. EDIT: Since the update to Android Studio 3.0 this started happening again, and invalidating the caches stopped fixing the issue. I tried everything I could, but in the end the only thing that worked was uninstalling everything Android-related, and then installing an old version of Android Studio. EDIT2: I've been using Android Studio 3.1 Canary 5 since it came out, and did not have this problem with it since then.
Android Studio 2.3.3 Download For MAC Emulator single click direct full offline installer standalone setup google drive link of Android Studio 2.3.3. Android Studio Project Site. 2.2, you may have noticed the larger download sizes than.
This suggests that the next stable release should have this fixed:/. I had this same problem when the gradle reported an error of not being able to find the Android SDK package. Since I could not locate the tools > Android > sync gradle option, I was unable to correct the issue. Although you did not get this gradle error, I'm confident the problem you are finding in the Tools menu can be solved in the same way.
You can go back to Android Studio 3.0 and run your app successfully on Mac or Windows. Just move the app folder from the current folder and place it into a new fresh folder. Then open the app in Android Studio 3.0 and rebuild the gradle. It should fix the issue for Tools > Android option not showing up. This solution worked on the same problem for Mac OSX High Sierra and Windows 10 systems.