{"id":153,"date":"2025-06-26T00:10:20","date_gmt":"2025-06-25T16:10:20","guid":{"rendered":"https:\/\/www.bqmz001.top\/?p=153"},"modified":"2025-06-26T00:10:20","modified_gmt":"2025-06-25T16:10:20","slug":"flutter-listview%e6%87%92%e5%8a%a0%e8%bd%bd%ef%bc%88%e4%b8%8a%ef%bc%89-%e5%85%88%e6%90%9e%e5%a4%a7%e6%a6%82%e7%9a%84%e5%8e%9f%e7%90%86","status":"publish","type":"post","link":"https:\/\/www.bqmz001.top\/index.php\/2025\/06\/26\/flutter-listview%e6%87%92%e5%8a%a0%e8%bd%bd%ef%bc%88%e4%b8%8a%ef%bc%89-%e5%85%88%e6%90%9e%e5%a4%a7%e6%a6%82%e7%9a%84%e5%8e%9f%e7%90%86\/","title":{"rendered":"flutter ListView\u61d2\u52a0\u8f7d\uff08\u4e0a\uff09\u2014\u2014\u5148\u641e\u5927\u6982\u7684\u539f\u7406"},"content":{"rendered":"

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{\n    "code": 200,\n    "msg": "\u64cd\u4f5c\u6210\u529f",\n    "data": {\n        "records": [\n            {\n                "id": 1,\n                "firstName": "\u4e09",\n                "lastName": "\u5f20",\n                "phoneNumber": "13333333333",\n                "age": 18,\n                "sex": 1,\n                "address": "\u5c31\u4f4f\u5728\u90a3\u4e2a\u5c6f"\n            },\n            {\n                "id": 1936971071475949571,\n                "firstName": "\u4f1f",\n                "lastName": "\u5f20",\n                "phoneNumber": "13811234567",\n                "age": 28,\n                "sex": 1,\n                "address": "\u5317\u4eac\u5e02\u671d\u9633\u533a\u5efa\u56fd\u8def88\u53f7"\n            }\n        ],\n        "total": 101,\n        "size": 10,\n        "current": 1,\n        "pages": 11\n    }\n}\n<\/code><\/pre>\n
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total<\/code>\u80fd\u544a\u8bc9\u4f60\u540e\u7aef\u603b\u5171\u6709\u591a\u5c11\u6761\uff0c
size<\/code>\u544a\u8bc9\u4f60\u8fd9\u56de\u8fd4\u56de\u6765\u51e0\u6761\uff08\u5f53\u7136\u8fd9\u4e2a\u6570\u5b57\u662f\u9519\u7684\uff0c\u56e0\u4e3a\u8981\u7167\u987e\u9605\u8bfb\u4f53\u9a8c\u6545\u610f\u5220\u7684\u5269\u4e24\u6761\u800c\u975e10\uff0c\u52ff\u55b7\uff09\uff0c
current<\/code>\u544a\u8bc9\u4f60\u8fd9\u662f\u7b2c\u51e0\u9875
pages<\/code>\u544a\u8bc9\u4f60\u540e\u7aef\u603b\u5171\u6709\u591a\u5c11\u9875
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main_provider.dart<\/h5>\n
import 'dart:convert';\n\nimport 'package:day05\/bean\/base_bean.dart';\nimport 'package:day05\/bean\/contact_bean.dart';\nimport 'package:day05\/dio_util.dart';\nimport 'package:dio\/dio.dart';\nimport 'package:flutter\/cupertino.dart';\n\nimport 'bean\/page_bean.dart';\n\nclass MainProvider with ChangeNotifier {\n  String _text = '';\n\n  String get text => _text;\n\n  List<ContactBean> _dataList = [];\n  List<ContactBean> get dataList => _dataList;\n\n  int _pageNum = 1;\n  int get pageNum => _pageNum;\n\n\n  Future<void> getList() async {\n    await DioUtil.getInstance().get(\n      "http:\/\/192.168.5.116:20080\/contact\/list",\n      null,\n      () {\n        _text = "loading";\n        notifyListeners();\n      },\n      (data) {\n        BaseBean bean = BaseBean.fromJson(data);\n        _dataList=List.from(bean.data.map((e) => ContactBean.fromJson(e)));\n        notifyListeners();\n      },\n      (reason) {\n        _text = reason;\n        notifyListeners();\n      },\n    );\n  }\n\n  Future<void> getListPage(int pageNum) async {\n    await DioUtil.getInstance().get(\n      "http:\/\/192.168.5.116:20080\/contact\/listPage",\n      {\n        'page': pageNum,\n        'size': 10,\n      },\n          () {\n        _text = "loading";\n        notifyListeners();\n      },\n          (data) {\n        var bean = BaseBean.fromJson(data);\n        var pageBean = PageBean.fromJson(bean.data);\n        if(pageBean.current==1) {\n          _dataList.clear();\n        }\n        _dataList.addAll(List.from(pageBean.records!.map((e) => ContactBean.fromJson(e))));\n        notifyListeners();\n      },\n          (reason) {\n        _text = reason;\n        notifyListeners();\n      },\n    );\n  }\n\n  void addPage(){\n    _pageNum++;\n  }\n\n  void resetPage() {\n    _pageNum = 1;\n  }\n\n  void addContact() async {\n    DioUtil.getInstance().addHeader("token", "123456789");\n    await DioUtil.getInstance().post(\n      "http:\/\/192.168.5.116:20080\/contact\/add",\n      {\n        'firstName': '\u738b',\n        'lastName': '\u516d',\n        'phoneNumber': '13456789010',\n        'age': '22',\n        'sex': 1,\n        'address': '\u5c71\u897f\u7701\u664b\u57ce\u5e02',\n      },\n      () {\n        _text = "loading";\n        notifyListeners();\n      },\n      (data) {\n        _text = '\u6dfb\u52a0\u6210\u529f';\n        notifyListeners();\n      },\n      (reason) {\n        _text = reason;\n        notifyListeners();\n      },\n    );\n  }\n}\n<\/code><\/pre>\n
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List<ContactBean> _dataList = [];\nList<ContactBean> get dataList => _dataList;\n\nint _pageNum = 1;\nint get pageNum => _pageNum;\n\nFuture<void> getListPage(int pageNum) async {\n   await DioUtil.getInstance().get(\n     "http:\/\/192.168.5.116:20080\/contact\/listPage",\n     {\n       'page': pageNum,\n       'size': 10,\n     },\n         () {\n       _text = "loading";\n       notifyListeners();\n     },\n         (data) {\n       var bean = BaseBean.fromJson(data);\n       var pageBean = PageBean.fromJson(bean.data);\n       if(pageBean.current==1) {\n         _dataList.clear();\n       }\n       _dataList.addAll(List.from(pageBean.records!.map((e) => ContactBean.fromJson(e))));\n       notifyListeners();\n     },\n         (reason) {\n       _text = reason;\n       notifyListeners();\n     },\n   );\n }\n\nvoid addPage(){\n  _pageNum++;\n}\n\nvoid resetPage() {\n  _pageNum = 1;\n}\n<\/code><\/pre>\n
\u56e0\u4e3a\u4f17\u6240\u5468\u77e5\uff0cUI\u662fStatelessWidget\uff0c\u6240\u4ee5\u72b6\u6001\u90fd\u5728provider\u91cc\u3002
\u73b0\u5728\u65b0\u589e\u4e86\u4e00\u4e2a_pageNum\u7684\u79c1\u6709\u53d8\u91cf\uff0c\u9ed8\u8ba4\u5c31\u662f1\uff0c\u4ee3\u8868\u7b2c\u4e00\u9875
addPage()<\/code>\u65b9\u6cd5\u548cresetPage()<\/code>\u65b9\u6cd5\u662f\u7528\u6765\u9875\u6570+1\u548c\u91cd\u7f6e\u56de1\u7684
\u7136\u540e\u5c31\u8bb2getListPage(int pageNum)<\/code>\u65b9\u6cd5\uff0c\u4f20\u5165\u8981\u8bf7\u6c42\u7684\u9875\u6570\uff0c\u9875\u6570\u52a0\u51cf\u901a\u8fc7\u521a\u4e0a\u9762\u8bb2\u7684\u4e24\u4e2a\u65b9\u6cd5\u63a7\u5236\uff0c\u91cc\u9762\u7684\u903b\u8f91\u4e5f\u548c\u6211\u4eec\u8bb2\u539f\u7406\u65f6\u5019\u7684\u60c5\u51b5\u662f\u7b26\u5408\u7684\uff1a
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3\u3001\u6211\u6570\u636e\u62ff\u5230\u4e86\u5982\u4f55\u5c55\u793a\uff1f<\/h2>\n
\u5148\u8bd5\u4e00\u4e0b\u624b\u52a8\u8bf7\u6c42\u5206\u9875\u6570\u636e~
\u4e0a\u4ee3\u7801\uff01<\/p>\n
main.dart<\/h5>\n
import 'package:day05\/main_provider.dart';\nimport 'package:flutter\/material.dart';\nimport 'package:flutter_styled_toast\/flutter_styled_toast.dart';\nimport 'package:provider\/provider.dart';\n\n\nvoid main() {\n  runApp(\n    MultiProvider(\n      providers: [ChangeNotifierProvider(create: (context) => MainProvider())],\n      child: MyApp(),\n    ),\n  );\n}\n\nclass MyApp extends StatelessWidget {\n  const MyApp({super.key});\n\n  \/\/ This widget is the root of your application.\n  @override\n  Widget build(BuildContext context) {\n    return MaterialApp(\n      title: 'Flutter Demo',\n      theme: ThemeData(\n        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),\n      ),\n      home: const MyHomePage(title: 'Flutter Demo Home Page'),\n    );\n  }\n}\n\nclass MyHomePage extends StatelessWidget {\n  const MyHomePage({super.key, required this.title});\n\n  final String title;\n\n  @override\n  Widget build(BuildContext context) {\n    final provider = Provider.of<MainProvider>(context);\n\n    return Scaffold(\n      appBar: AppBar(\n        backgroundColor: Theme\n            .of(context)\n            .colorScheme\n            .inversePrimary,\n        title: Text(title),\n      ),\n      body: Center(\n        child: Column(\n          mainAxisAlignment: MainAxisAlignment.center,\n          children: <Widget>[\n            Text(provider.text),\n            ElevatedButton(\n              onPressed: provider.getList,\n              child: const Text('\u8bf7\u6c42\u6570\u636e'),\n            ),\n            ElevatedButton(\n              onPressed: () => provider.addContact(),\n              child: const Text('\u6dfb\u52a0\u4e00\u4e2a\u8054\u7cfb\u4eba'),\n            ),\n            Expanded(\n                child: RefreshIndicator(\n                  onRefresh: () async {\n                    \/\/ \u5237\u65b0\u65f6\u91cd\u7f6e\u9875\u7801\u5e76\u91cd\u65b0\u52a0\u8f7d\u6570\u636e\n                    provider.resetPage();\n                    await provider.getListPage(1);\n                  },\n                  child: ListView.builder(\n                    itemCount: provider.dataList.length + 1, \/\/ \u591a\u4e00\u4e2a\u52a0\u8f7d\u63d0\u793a\u9879\n                    itemBuilder: (context, index) {\n                      if (index < provider.dataList.length) {\n                        return ListTile(\n                          title: Text('${provider.dataList[index].lastName} ${provider.dataList[index].firstName}'),\n                          subtitle: Text('${provider.dataList[index].phoneNumber}'),\n                          onTap: () async  {\n                            if(index%2==0){\n                              showToast('\u70b9\u51fb\u4e86\u7b2c${index+1}\u4e2a\u8054\u7cfb\u4eba\uff1a${provider.dataList[index].lastName} ${provider.dataList[index].firstName}',context: context);\n                            } else {\n                              var data =await showADialog(context, '\u63d0\u793a',\n                                  '\u70b9\u51fb\u4e86\u7b2c${index + 1}\u4e2a\u8054\u7cfb\u4eba\uff1a${provider\n                                      .dataList[index].lastName} ${provider\n                                      .dataList[index].firstName}');\n                              showToast(data.toString(), context: context);\n                            }\n                          },\n                        );\n                      } else {\n                        \/\/ \u663e\u793a\u52a0\u8f7d\u63d0\u793a\n                        return ElevatedButton(onPressed: (){\n                          provider.addPage();\n                          provider.getListPage(provider.pageNum);\n                        }, child:const Text('\u5237\u65b0\u5217\u8868'));\n                      }\n                    },\n                  ),\n                )\n            )\n          ],\n        ),\n      ),\n    );\n  }\n\n  Future<dynamic> showADialog(context,title,content){\n    return showDialog(\n        context: context,\n        builder: (context)=>AlertDialog(\n          title: Text(title),\n          content: Text(content),\n          actions: [\n            TextButton(\n              onPressed: () => Navigator.of(context).pop(3),\n              child: Text('\u67d0\u79cd\u4e2d\u7acb\u6309\u94ae\uff1f'),\n            ),\n            TextButton(\n              onPressed: () => Navigator.of(context).pop(2),\n              child: Text('\u53d6\u6d88'),\n            ),\n            TextButton(\n              onPressed: () => Navigator.of(context).pop(1),\n              child: Text('\u786e\u5b9a'),\n            ),\n          ],\n        )\n    );\n  }\n}\n<\/code><\/pre>\n
\u76f8\u8f83\u4e8e\u4e4b\u524d\u53ea\u6709\u4e0b\u62c9\u5237\u65b0\u90a3\u4f1a\uff0cListView.Builder<\/code>\u7684itemCount<\/code>\u5c5e\u6027\u4e0d\u662fList\u7684\u957f\u5ea6\uff0c\u800c\u662f+1\u4e86\uff0c\u591a\u90a3\u4e00\u6761\u5c31\u662f\u4e3a\u4e86\u653e\u4e0a\u62c9\u52a0\u8f7d\u7684\u6846\u6846\u4e86\u3002
\uff08\u6211\u8fd9\u91cc\u5148\u6682\u65f6\u653e\u7740\u4e00\u4e2a\u624b\u52a8\u7684\u52a0\u8f7d\u6309\u94ae\uff0c\u6309\u4e00\u4e0b\u518d\u52a0\u8f7d\u4e0b\u976210\u6761\u6570\u636e<\/em>\uff09<\/p>\n
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\uff08\u672c\u6765\u8fd8\u60f3\u7684itemCount\u8fd9\u4e48\u5199\uff1aitemCount: provider.dataList.isEmpty ? 0 : provider.dataList.length + 1,<\/code>\uff0c\u4f46\u5b9e\u64cd\u8bc1\u660e\u867d\u7136\u53ef\u4ee5\u5728\u6ca1\u6709\u6570\u636e\u7684\u65f6\u5019\u9690\u85cf\u4f46\u7528\u8d77\u6765\u4f1a\u5361\u987f\uff0c\u6240\u4ee5\u5c31\u5148\u9732\u7740\u8fd9\u4e2abug\u4e4b\u540e\u89e3\u51b3\uff09<\/p>\n
\u5b9e\u9a8c\u6709\u6548\u3002<\/p>\n
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\u90a3\u73b0\u5728\u5c31\u5f00\u59cb\u5c1d\u8bd5\u8ba9\u5b83\u81ea\u52a8\u5316\uff01<\/p>\n
\u4e0a\u4ee3\u7801\uff01<\/p>\n
main.dart<\/h5>\n
import 'package:day05\/main_provider.dart';\nimport 'package:flutter\/material.dart';\nimport 'package:flutter_styled_toast\/flutter_styled_toast.dart';\nimport 'package:provider\/provider.dart';\n\n\nvoid main() {\n  runApp(\n    MultiProvider(\n      providers: [ChangeNotifierProvider(create: (context) => MainProvider())],\n      child: MyApp(),\n    ),\n  );\n}\n\nclass MyApp extends StatelessWidget {\n  const MyApp({super.key});\n\n  \/\/ This widget is the root of your application.\n  @override\n  Widget build(BuildContext context) {\n    return MaterialApp(\n      title: 'Flutter Demo',\n      theme: ThemeData(\n        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),\n      ),\n      home: const MyHomePage(title: 'Flutter Demo Home Page'),\n    );\n  }\n}\n\nclass MyHomePage extends StatelessWidget {\n  const MyHomePage({super.key, required this.title});\n\n  final String title;\n\n  @override\n  Widget build(BuildContext context) {\n    final provider = Provider.of<MainProvider>(context);\n\n    return Scaffold(\n      appBar: AppBar(\n        backgroundColor: Theme\n            .of(context)\n            .colorScheme\n            .inversePrimary,\n        title: Text(title),\n      ),\n      body: Center(\n        child: Column(\n          mainAxisAlignment: MainAxisAlignment.center,\n          children: <Widget>[\n            Text(provider.text),\n            ElevatedButton(\n              onPressed: provider.getList,\n              child: const Text('\u8bf7\u6c42\u6570\u636e'),\n            ),\n            ElevatedButton(\n              onPressed: () => provider.addContact(),\n              child: const Text('\u6dfb\u52a0\u4e00\u4e2a\u8054\u7cfb\u4eba'),\n            ),\n            Expanded(\n                child: RefreshIndicator(\n                  onRefresh: () async {\n                    \/\/ \u5237\u65b0\u65f6\u91cd\u7f6e\u9875\u7801\u5e76\u91cd\u65b0\u52a0\u8f7d\u6570\u636e\n                    provider.resetPage();\n                    await provider.getListPage(provider.pageNum);\n                  },\n                  child: NotificationListener<ScrollNotification>(\n                    onNotification: (scrollInfo){\n                      if (scrollInfo.metrics.pixels == scrollInfo.metrics.maxScrollExtent) {\n                        \/\/ \u6eda\u52a8\u5230\u5e95\u90e8\uff0c\u52a0\u8f7d\u4e0b\u4e00\u9875\n                        provider.addPage();\n                        provider.getListPage(provider.pageNum);\n                      }\n                      return false;\n                    },\n                    child: ListView.builder(\n                      itemCount: provider.dataList.isEmpty ? 0 : provider.dataList.length + 1, \n                      itemBuilder: (context, index) {\n                        if (index < provider.dataList.length) {\n                          return ListTile(\n                            title: Text('${provider.dataList[index].lastName} ${provider.dataList[index].firstName}'),\n                            subtitle: Text('${provider.dataList[index].phoneNumber}'),\n                            onTap: () async  {\n                              if(index%2==0){\n                                showToast('\u70b9\u51fb\u4e86\u7b2c${index+1}\u4e2a\u8054\u7cfb\u4eba\uff1a${provider.dataList[index].lastName} ${provider.dataList[index].firstName}',context: context);\n                              } else {\n                                var data =await showADialog(context, '\u63d0\u793a',\n                                    '\u70b9\u51fb\u4e86\u7b2c${index + 1}\u4e2a\u8054\u7cfb\u4eba\uff1a${provider\n                                        .dataList[index].lastName} ${provider\n                                        .dataList[index].firstName}');\n                                showToast(data.toString(), context: context);\n                              }\n                            },\n                          );\n                        } else {\n                          \/\/ \u663e\u793a\u52a0\u8f7d\u63d0\u793a\n                          return const Center(child: CircularProgressIndicator());\n                        }\n                      },\n                    ),\n                  ),\n                )\n            )\n          ],\n        ),\n      ),\n    );\n  }\n\n  Future<dynamic> showADialog(context,title,content){\n    return showDialog(\n        context: context,\n        builder: (context)=>AlertDialog(\n          title: Text(title),\n          content: Text(content),\n          actions: [\n            TextButton(\n              onPressed: () => Navigator.of(context).pop(3),\n              child: Text('\u67d0\u79cd\u4e2d\u7acb\u6309\u94ae\uff1f'),\n            ),\n            TextButton(\n              onPressed: () => Navigator.of(context).pop(2),\n              child: Text('\u53d6\u6d88'),\n            ),\n            TextButton(\n              onPressed: () => Navigator.of(context).pop(1),\n              child: Text('\u786e\u5b9a'),\n            ),\n          ],\n        )\n    );\n  }\n}\n<\/code><\/pre>\n
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\u5728NotificationListener\u7684onNotification\u4e8b\u4ef6\u4e2d\u5c06\u521a\u624d\u624b\u52a8\u6309\u6309\u94ae\u7684\u4e8b\u4ef6\u7ed9\u81ea\u52a8\u5316\uff1a\u5f53ListView\u5212\u62c9\u5230\u6700\u5e95\u4e0b\u540e\u53bb\u8c03\u63a5\u53e3\u8bf7\u6c42\u4e0b\u4e00\u9875\u7684\u6570\u636e\u3002
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\u8fd9\u6837\u4f60\u5c31\u80fd\u5728\u624b\u673a\u4e0a\u5f97\u5230\u4e00\u4e2a\u80fd\u770b\u7684ListView\uff0c\u4f46\u8fd8\u79bb\u80fd\u7528\u5dee\u7684\u5f88\u8fdc\u3002
\u6240\u4ee5\u8be5\u7bc7\u6587\u7ae0\u6709\u540e\u7eed\uff0c\u7b49\u6211\u6478\u900f\u4e86\u9a6c\u4e0a\u66f4\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5e8f\uff1a\u6e29\u99a8\u63d0\u9192 \u5e72\u6d3b\u4e00\u5b9a\u8981\u7ec6\u81f4\uff0c\u6709\u53ef\u80fd\u4e00\u4e9b\u9e21\u6bdb\u849c\u76ae\u7684\u53c2\u6570\u9519\u8bef\u5c31\u4f1a\u8ba9\u4f60\u627e\u4e00\u4e0b\u5348\u751a\u81f3\u4e00\u5929\u90fd\u6ca1\u4ec0\u4e48\u8fdb\u5c55\u3002\u4e3a\u4e86\u5b66\u4e60\u61d2\u52a0\u8f7d […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-153","post","type-post","status-publish","format-standard","hentry","category-androidflutter"],"_links":{"self":[{"href":"https:\/\/www.bqmz001.top\/index.php\/wp-json\/wp\/v2\/posts\/153","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bqmz001.top\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bqmz001.top\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bqmz001.top\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bqmz001.top\/index.php\/wp-json\/wp\/v2\/comments?post=153"}],"version-history":[{"count":71,"href":"https:\/\/www.bqmz001.top\/index.php\/wp-json\/wp\/v2\/posts\/153\/revisions"}],"predecessor-version":[{"id":224,"href":"https:\/\/www.bqmz001.top\/index.php\/wp-json\/wp\/v2\/posts\/153\/revisions\/224"}],"wp:attachment":[{"href":"https:\/\/www.bqmz001.top\/index.php\/wp-json\/wp\/v2\/media?parent=153"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bqmz001.top\/index.php\/wp-json\/wp\/v2\/categories?post=153"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bqmz001.top\/index.php\/wp-json\/wp\/v2\/tags?post=153"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}