showOverlay method
Show floating window
Implementation
Future<bool> showOverlay({
int? height,
int? width,
String? alignment,
String? notificationVisibility,
String? flag,
String? overlayTitle,
String? overlayContent,
bool? enableDrag,
String? positionGravity,
Map<String, dynamic>? startPosition,
}) {
throw UnimplementedError('showOverlay() has not been implemented.');
}