Possible duplicate, I just download a Android Studio Zip file like Eclipse, as I opened getting this error.
same problem happened to me, From this
I have faced the same issue, to solve it:
1- delete (or move) the projects folder (AndroidStudioProjects).
2- Run the Android-Studio (a WELCOME screen will started).
3- From Welcome Screen choose, "Configure -> Project Defaults -> Project Structure)
4- Under Platform Settings choose SDKs.
5- Select Android SDK -> right_click delete.
6- Right_click -> New Sdk -> Android SDK -> choose your SDK dir -> then OK.
7- Choose the Build target -> apply -> OK. enjoy