How to build "android-gif-drawable-sample" by Android Studio

1. Download source code from here:
    https://github.com/koral--/android-gif-drawable-sample#android-gif-drawable-sample
2. Create a new Project of Android Studio, select "Add no Activity".
3. Copy all folder and file from /android-gif-drawable-sample/sample/src/ to your /project/app/src/
4. Add dependencies of android-gif-drawable:
    a. File->Project Structure
    b. Select app->Dependencies
    c. Add "Library dependency", search "pl.droidsonroids.gif:android-gif-drawable:1.1.7", select it press ok.
5. Build->Rebuild Project.

Done.