The document describes the steps taken to open an Android studio project written by kgkang. When first opening the project, there were missing platform and SDK errors which were resolved by installing missing platforms and components. There were also errors with the build tool revision and constraint layout which were fixed by installing the necessary build tools and artifacts. After completing these installation steps, the project was able to open without any build errors.

1. Android studio
Exist project open
Written by kgkang
Note) Android studio 2.3.3 base

2. 17.12.22 – Project open
- Project open => (Missing platform error)

3. 17.12.22 – Project open
- Android SDK missing platform install. (Accept => Next)

4. 17.12.22 – Project open
- Component install

5. 17.12.22 – Project open
- Component install (Finish)

6. 17.12.22 – Project open
- Build tool revision error (Install build tool)

7. 17.12.22 – Project open
- Install build tool

8. 17.12.22 – Project open
- Install build tool (Finish)

9. 17.12.22 – Project open
- Constraint-layout error (Install artifact)

10. 17.12.22 – Project open
- Install artifact (Finish)

11. 17.12.22 – Project open
- Gradle plug-in update

12. 17.12.22 – Project open
- Project open finished without build error