feat:支持排行榜功能

lib/pages/rank/zone/controller.dart

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+import 'package:get/get.dart';
+import 'package:flutter/material.dart';
+import 'package:pilipala/http/video.dart';
+import 'package:pilipala/models/model_hot_video_item.dart';
+
+class ZoneController extends GetxController {
+  final ScrollController scrollController = ScrollController();
+  RxList<HotVideoItemModel> videoList = <HotVideoItemModel>[].obs;
+  bool isLoadingMore = false;
+  bool flag = false;
+  OverlayEntry? popupDialog;
+  int zoneID = 0;
+
+  // 获取推荐
+  Future queryRankFeed(type, rid) async {
+    zoneID = rid;
+    var res = await VideoHttp.getRankVideoList(zoneID);
+    if (res['status']) {
+      if (type == 'init') {
+        videoList.value = res['data'];
+      } else if (type == 'onRefresh') {
+        videoList.clear();
+        videoList.addAll(res['data']);
+      } else if (type == 'onLoad') {
+        videoList.clear();
+        videoList.addAll(res['data']);
+      }
+    }
+    isLoadingMore = false;
+    return res;
+  }
+
+  // 下拉刷新
+  Future onRefresh() async {
+    queryRankFeed('onRefresh', zoneID);
+  }
+
+  // 上拉加载
+  Future onLoad() async {
+    queryRankFeed('onLoad', zoneID);
+  }
+
+  // 返回顶部并刷新
+  void animateToTop() async {
+    if (scrollController.offset >=
+        MediaQuery.of(Get.context!).size.height * 5) {
+      scrollController.jumpTo(0);
+    } else {
+      await scrollController.animateTo(0,
+          duration: const Duration(milliseconds: 500), curve: Curves.easeInOut);
+    }
+  }
+}

lib/pages/rank/zone/index.dart

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+library rank.zone;
+
+export './controller.dart';
+export './view.dart';

lib/pages/rank/zone/view.dart

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+import 'dart:async';
+
+import 'package:flutter/material.dart';
+import 'package:flutter/rendering.dart';
+import 'package:get/get.dart';
+import 'package:pilipala/common/constants.dart';
+import 'package:pilipala/common/widgets/animated_dialog.dart';
+import 'package:pilipala/common/widgets/overlay_pop.dart';
+import 'package:pilipala/common/skeleton/video_card_h.dart';
+import 'package:pilipala/common/widgets/http_error.dart';
+import 'package:pilipala/common/widgets/video_card_h.dart';
+import 'package:pilipala/pages/home/index.dart';
+import 'package:pilipala/pages/main/index.dart';
+import 'package:pilipala/pages/rank/zone/index.dart';
+
+class ZonePage extends StatefulWidget {
+  const ZonePage({Key? key, required this.rid}) : super(key: key);
+
+  final int rid;
+
+  @override
+  State<ZonePage> createState() => _ZonePageState();
+}
+
+class _ZonePageState extends State<ZonePage> {
+  final ZoneController _zoneController = Get.put(ZoneController());
+  List videoList = [];
+  Future? _futureBuilderFuture;
+  late ScrollController scrollController;
+
+  @override
+  void initState() {
+    super.initState();
+    _futureBuilderFuture = _zoneController.queryRankFeed('init', widget.rid);
+    scrollController = _zoneController.scrollController;
+    StreamController<bool> mainStream =
+        Get.find<MainController>().bottomBarStream;
+    StreamController<bool> searchBarStream =
+        Get.find<HomeController>().searchBarStream;
+    scrollController.addListener(
+      () {
+        if (scrollController.position.pixels >=
+            scrollController.position.maxScrollExtent - 200) {
+          if (!_zoneController.isLoadingMore) {
+            _zoneController.isLoadingMore = true;
+            _zoneController.onLoad();
+          }
+        }
+
+        final ScrollDirection direction =
+            scrollController.position.userScrollDirection;
+        if (direction == ScrollDirection.forward) {
+          mainStream.add(true);
+          searchBarStream.add(true);
+        } else if (direction == ScrollDirection.reverse) {
+          mainStream.add(false);
+          searchBarStream.add(false);
+        }
+      },
+    );
+  }
+
+  @override
+  void dispose() {
+    scrollController.removeListener(() {});
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return RefreshIndicator(
+      onRefresh: () async {
+        return await _zoneController.onRefresh();
+      },
+      child: CustomScrollView(
+        controller: _zoneController.scrollController,
+        slivers: [
+          SliverPadding(
+            // 单列布局 EdgeInsets.zero
+            padding:
+                const EdgeInsets.fromLTRB(0, StyleString.safeSpace - 5, 0, 0),
+            sliver: FutureBuilder(
+              future: _futureBuilderFuture,
+              builder: (context, snapshot) {
+                if (snapshot.connectionState == ConnectionState.done) {
+                  Map data = snapshot.data as Map;
+                  if (data['status']) {
+                    return Obx(
+                      () => SliverList(
+                        delegate: SliverChildBuilderDelegate((context, index) {
+                          return VideoCardH(
+                            videoItem: _zoneController.videoList[index],
+                            showPubdate: true,
+                            longPress: () {
+                              _zoneController.popupDialog = _createPopupDialog(
+                                  _zoneController.videoList[index]);
+                              Overlay.of(context)
+                                  .insert(_zoneController.popupDialog!);
+                            },
+                            longPressEnd: () {
+                              _zoneController.popupDialog?.remove();
+                            },
+                          );
+                        }, childCount: _zoneController.videoList.length),
+                      ),
+                    );
+                  } else {
+                    return HttpError(
+                      errMsg: data['msg'],
+                      fn: () {
+                        setState(() {
+                          _futureBuilderFuture =
+                              _zoneController.queryRankFeed('init', widget.rid);
+                        });
+                      },
+                    );
+                  }
+                } else {
+                  // 骨架屏
+                  return SliverList(
+                    delegate: SliverChildBuilderDelegate((context, index) {
+                      return const VideoCardHSkeleton();
+                    }, childCount: 10),
+                  );
+                }
+              },
+            ),
+          ),
+          SliverToBoxAdapter(
+            child: SizedBox(
+              height: MediaQuery.of(context).padding.bottom + 10,
+            ),
+          )
+        ],
+      ),
+    );
+  }
+
+  OverlayEntry _createPopupDialog(videoItem) {
+    return OverlayEntry(
+      builder: (context) => AnimatedDialog(
+        closeFn: _zoneController.popupDialog?.remove,
+        child: OverlayPop(
+            videoItem: videoItem, closeFn: _zoneController.popupDialog?.remove),
+      ),
+    );
+  }
+}