Android Studio changes the version of the Project SDK

The Android project in Elipse can be set up in Android Studio through the file-->new-> Import Project method. However, there are times when you need to change the API level of the project, and the following procedure is the change method. Simply write down, and don't blame me for not speaking clearly enough, you have a sense of it. :)

File-->project structure, open the following interface, this is to change the entire Project SDK version:

Reference articles

How Android studio changes the SDK version (for non-gradle)

Android Studio changes the version of the Project SDK