以下操作，全部在终端(terminal)中执行：

卸载android studio

rm -Rf /Applications/Android\ Studio.app
rm -Rf ~/Library/Preferences/AndroidStudio*
rm ~/Library/Preferences/com.google.android.studio.plist
rm -Rf ~/Library/Application\ Support/AndroidStudio*
rm -Rf ~/Library/Logs/AndroidStudio*
rm -Rf ~/Library/Caches/AndroidStudio*

卸载gradle

rm -Rf ~/.gradle

卸载Android Virtual Devices(AVDs) and *.keystore.

rm -Rf ~/.android

删除Android SDK Tools

rm -Rf ~/Library/Android*

删除Projects

rm -Rf ~/AndroidStudioProjects