show method
返回结构数据
map key is 'field0..n' to get data. if not set it in add method
Implementation
Future<DialogResult<Map<String, Object?>?>?> show(BuildContext context) {
return Navigator.of(context, rootNavigator: true)
.push<DialogResult<Map<String, Object?>?>?>(
_dialogBuilder<DialogResult<Map<String, Object?>?>?>(context, null),
)
.onError((error, stackTrace) => throw Exception(error));
}