1. Go to Android Studio | New Project | Minimum SDK
2. Select "API 15: Android 4.0.3" or higher and create your new project.
3. After you create a new project, open
your_app | build.gradle
4. Add this to build.gradle before dependencies:
repositories { mavenCentral() }
5. Build your project. Now you can import com.facebook.FacebookSdk into your app.
Add compile 'com.facebook.android:facebook-android-sdk:4.6.0' to your build.gradle dependencies and rebuild.