修改选择器样式

lib/controller/mh_controller/issue_preview_controller.dart

@@ -0,0 +1,20 @@
+import 'package:ef/ef.dart';
+import 'package:json_annotation/json_annotation.dart';
+
+part 'issue_preview_controller.g.dart';
+
+@JsonSerializable()
+class IssuePreviewInfoModel {
+
+  IssuePreviewInfoModel();
+
+  static IssuePreviewInfoModel fromJson(Map<String, dynamic> json) =>
+      _$IssuePreviewInfoModelFromJson(json);
+  Map<String, dynamic> toJson() => _$IssuePreviewInfoModelToJson(this);
+}
+
+class IssuePreviewInfoController extends GetControllerEx<IssuePreviewInfoModel> {
+  IssuePreviewInfoController() {
+    attr = GetModel(IssuePreviewInfoModel()).obs;
+  }
+}