opt: singleton FollowTypeController (#1578)

lib/pages/fan/view.dart

@@ -11,11 +11,11 @@ import 'package:get/get.dart';
 class FansPage extends StatefulWidget {
   const FansPage({
     super.key,
-    this.showName,
+    this.showName = true,
     this.onSelect,
   });
 
-  final bool? showName;
+  final bool showName;
   final ValueChanged<UserModel>? onSelect;
 
   @override
@@ -25,15 +25,14 @@ class FansPage extends StatefulWidget {
 class _FansPageState extends FollowTypePageState<FansPage> {
   @override
   late final FansController controller = Get.put(
-    FansController(widget.showName ?? true),
-    tag: Utils.generateRandomString(8),
+    FansController(widget.showName),
+    tag: Get.parameters['mid'],
   );
   late final flag = widget.onSelect == null && controller.isOwner;
 
   @override
-  PreferredSizeWidget? get appBar => widget.showName == false
-      ? null
-      : AppBar(
+  PreferredSizeWidget? get appBar => widget.showName
+      ? AppBar(
           title: controller.isOwner
               ? const Text('我的粉丝')
               : Obx(() {
@@ -41,7 +40,8 @@ class _FansPageState extends FollowTypePageState<FansPage> {
                   if (name != null) return Text('$name的粉丝');
                   return const SizedBox.shrink();
                 }),
-        );
+        )
+      : null;
 
   @override
   Widget buildItem(int index, FollowItemModel item) {

lib/pages/follow_type/follow_same/view.dart

@@ -1,6 +1,6 @@
 import 'package:PiliPlus/pages/follow_type/follow_same/controller.dart';
 import 'package:PiliPlus/pages/follow_type/view.dart';
-import 'package:PiliPlus/utils/utils.dart';
+import 'package:PiliPlus/utils/extension.dart';
 import 'package:flutter/material.dart';
 import 'package:get/get.dart';
 
@@ -13,9 +13,9 @@ class FollowSamePage extends StatefulWidget {
 
 class _FollowSamePageState extends FollowTypePageState<FollowSamePage> {
   @override
-  final controller = Get.put(
-    FollowSameController(),
-    tag: Utils.generateRandomString(8),
+  final controller = Get.putOrFind(
+    FollowSameController.new,
+    tag: Get.parameters['mid'],
   );
 
   @override

lib/pages/follow_type/followed/view.dart

@@ -1,6 +1,6 @@
 import 'package:PiliPlus/pages/follow_type/followed/controller.dart';
 import 'package:PiliPlus/pages/follow_type/view.dart';
-import 'package:PiliPlus/utils/utils.dart';
+import 'package:PiliPlus/utils/extension.dart';
 import 'package:flutter/material.dart';
 import 'package:get/get.dart';
 
@@ -13,9 +13,9 @@ class FollowedPage extends StatefulWidget {
 
 class _FollowedPageState extends FollowTypePageState<FollowedPage> {
   @override
-  final controller = Get.put(
-    FollowedController(),
-    tag: Utils.generateRandomString(8),
+  final controller = Get.putOrFind(
+    FollowedController.new,
+    tag: Get.parameters['mid'],
   );
 
   @override

lib/pages/follow_type/view.dart

@@ -25,7 +25,7 @@ abstract class FollowTypePageState<T extends StatefulWidget> extends State<T> {
         onRefresh: controller.onRefresh,
         child: CustomScrollView(
           physics: const AlwaysScrollableScrollPhysics(),
-          controller: controller.scrollController,
+          // controller: controller.scrollController,
           slivers: [
             ViewSliverSafeArea(
               sliver: Obx(