Convert annotation import to androidx
@@ -11,7 +11,8 @@ import android.content.pm.PackageItemInfo;
import android.content.pm.PackageManager;
import android.os.Build;
import android.os.Handler;
-import android.support.annotation.Nullable;
+
+import androidx.annotation.Nullable;
import org.altbeacon.beacon.Beacon;
import org.altbeacon.beacon.BeaconManager;
