Check to see if an Android device supports the Leanback system feature

LeanbackUtil.java

public class LeanbackUtil {
   /**
    * Returns true if the Leanback System feature is available otherwise false
    *
    * Can be used to help determine if running on an android tv device with the leanback launcher.
    */
   public static boolean isLeanbackSupported(Context context) {
      final PackageManager pm = context.getPackageManager();
      return pm.hasSystemFeature("android.software.leanback");
   }
}