重构列表请求

see more search BeeListView

lib/pages/industry_committee/industry_committee_page.dart

@@ -2,6 +2,7 @@ import 'package:akuCommunity/base/base_style.dart';
 import 'package:akuCommunity/constants/api.dart';
 import 'package:akuCommunity/model/user/committee_item_model.dart';
 import 'package:akuCommunity/pages/industry_committee/committee_mailbox/committee_mailbox_page.dart';
+import 'package:akuCommunity/pages/things_page/widget/bee_list_view.dart';
 import 'package:akuCommunity/utils/network/base_list_model.dart';
 import 'package:akuCommunity/utils/network/net_util.dart';
 import 'package:akuCommunity/widget/bee_scaffold.dart';
@@ -158,20 +159,39 @@ class _IndustryCommitteePageState extends State<IndustryCommitteePage> {
   Widget build(BuildContext context) {
     return BeeScaffold(
       title: '业委会',
-      body: EasyRefresh(
-        firstRefresh: true,
-        header: MaterialHeader(),
+      body: BeeListView(
+        path: API.manager.commiteeStaff,
+        convert: (model) {
+          return model.tableList
+              .map((e) => CommitteeItemModel.fromJson(e))
+              .toList();
+        },
         controller: _refreshController,
-        onRefresh: refresh,
-        child: ListView.separated(
-          padding: EdgeInsets.symmetric(horizontal: 32.w, vertical: 20.w),
-          itemBuilder: (context, index) {
-            return _buildCard(_committeeModels[index]);
-          },
-          separatorBuilder: (context, index) => 20.hb,
-          itemCount: _committeeModels.length,
-        ),
+        builder: (items) {
+          return ListView.separated(
+            padding: EdgeInsets.symmetric(horizontal: 32.w, vertical: 20.w),
+            itemBuilder: (context, index) {
+              return _buildCard(items[index]);
+            },
+            separatorBuilder: (context, index) => 20.hb,
+            itemCount: items.length,
+          );
+        },
       ),
+      // body: EasyRefresh(
+      //   firstRefresh: true,
+      //   header: MaterialHeader(),
+      //   controller: _refreshController,
+      //   onRefresh: refresh,
+      //   child: ListView.separated(
+      //     padding: EdgeInsets.symmetric(horizontal: 32.w, vertical: 20.w),
+      //     itemBuilder: (context, index) {
+      //       return _buildCard(_committeeModels[index]);
+      //     },
+      //     separatorBuilder: (context, index) => 20.hb,
+      //     itemCount: _committeeModels.length,
+      //   ),
+      // ),
       bottomNavi: _buildBottomNavi(),
     );
   }

lib/pages/things_page/widget/bee_list_view.dart

@@ -0,0 +1,115 @@
+import 'package:akuCommunity/utils/network/base_list_model.dart';
+import 'package:akuCommunity/utils/network/net_util.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_easyrefresh/easy_refresh.dart';
+
+/// ## BeeListView
+///```dart
+///BeeListView(
+///   path: API.someAPI,
+///   convert: (model) {
+///     return model.tableList
+///     .map((e) => SomeModel.fromJson(e))
+///     .toList();
+///   },
+///   controller: _refreshController,
+///   builder: (items) {
+///     return ListView.builder(
+///       itemBuilder: (context, index) {
+///         return _buildSomeItem(items[index]);
+///       },
+///       itemCount: items.length,
+///     );
+///   },
+///)
+///```
+class BeeListView<T> extends StatefulWidget {
+  ///API path
+  final String path;
+
+  ///same as EasyRefreshController
+  final EasyRefreshController controller;
+
+  ///转换器
+  ///
+  ///BaseListModel to T
+  ///
+  ///T is a tableList item.
+  ///
+  ///```dart
+  ///...
+  ///convert: (model) {
+  ///   return model.tableList
+  ///   .map((e) => SomeModel.fromJson(e))
+  ///   .toList();
+  ///},
+  ///...
+  ///```
+  final List<T> Function(BaseListModel model) convert;
+
+  ///子组件构造器
+  final Widget Function(List<T> items) builder;
+
+  ///每页记录数
+  final int size;
+
+  ///额外的参数
+  final Map<String, dynamic> extraParams;
+  BeeListView({
+    Key key,
+    this.path,
+    @required this.controller,
+    this.convert,
+    this.builder,
+    this.size = 10,
+    this.extraParams,
+  }) : super(key: key);
+
+  @override
+  _BeeListViewState<T> createState() => _BeeListViewState<T>();
+}
+
+class _BeeListViewState<T> extends State<BeeListView> {
+  int _pageNum = 1;
+  BaseListModel _model = BaseListModel.zero();
+  List<T> _models = [];
+  Map<String, dynamic> get _params {
+    Map<String, dynamic> tempMap = {
+      'pageNum': _pageNum,
+      'size': widget.size,
+    };
+    tempMap.addAll(widget.extraParams ?? {});
+    return tempMap;
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return EasyRefresh(
+      controller: widget.controller,
+      header: MaterialHeader(),
+      footer: MaterialFooter(),
+      onRefresh: () async {
+        _pageNum = 1;
+        _model = await NetUtil().getList(
+          widget.path,
+          params: _params,
+        );
+        _models = widget.convert(_model);
+        setState(() {});
+      },
+      firstRefresh: true,
+      onLoad: () async {
+        _pageNum++;
+        _model = await NetUtil().getList(
+          widget.path,
+          params: _params,
+        );
+        _models.addAll(widget.convert(_model) as List<T>);
+        if (_pageNum >= _model.pageCount)
+          widget.controller.finishLoad(noMore: true);
+        setState(() {});
+      },
+      child: widget.builder(_models),
+    );
+  }
+}