Android Studio "Project Structure" not coming properly

Go to File > Project Structure > Project Settings > Modules.

Click on the green colored + and add new module. select Application module and set the content root to your project module.

Click next and then finish.

This should do the trick and the complete project structure will appear. It worked for me.

When something like that happens to me, to fix it, I go to

File -> Project Structure -> Modules, click (+) to add a module.

To import the main module you have to search for the IML extension file to load the project structure configuration again (for example app.iml), and thats all. I hope it helps.

Change the SDK to a level that you have installed in the SDK manager. The SDK manager can be accessed from Tools -> Android -> SDK Manager. For me, Android Studio was packaged with API Level 17 but the new project wizard tried to target API Level 18.