Android Studio not committing to GitHub
You have to select "commit and push".
If you want to upload (push) the changes that you made, go to:
VCS -> Git -> PUSHOnly after "pushing", your changes will be uploaded to GitHub.
If you select "commit", your changes would remain local.
For my case it's a different - I try uncheck Perform code analysis in commit changes dialog and it worked. Hope it will help some one.