{"id":225,"date":"2025-06-26T11:44:52","date_gmt":"2025-06-26T03:44:52","guid":{"rendered":"https:\/\/www.bqmz001.top\/?p=225"},"modified":"2025-06-26T11:44:52","modified_gmt":"2025-06-26T03:44:52","slug":"flutter-listview%e6%87%92%e5%8a%a0%e8%bd%bd%ef%bc%88%e4%b8%8b%ef%bc%89-%e5%8a%a0%e8%bd%bd%e5%ae%8c%e4%b9%8b%e5%90%8e%e7%9a%84%e4%ba%8b%e6%83%85%e6%80%8e%e4%b9%88%e5%a4%84%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%8b%ef%bc%89-%e5%8a%a0%e8%bd%bd%e5%ae%8c%e4%b9%8b%e5%90%8e%e7%9a%84%e4%ba%8b%e6%83%85%e6%80%8e%e4%b9%88%e5%a4%84%e7%90%86\/","title":{"rendered":"flutter ListView\u61d2\u52a0\u8f7d\uff08\u4e0b\uff09\u2014\u2014\u52a0\u8f7d\u5b8c\u4e4b\u540e\u7684\u4e8b\u60c5\u600e\u4e48\u5904\u7406"},"content":{"rendered":"<p>\u4e0a\u7bc7\u6587\u7ae0\u7684\u539f\u7406\u662f\u8bb2\u5b8c\u4e86\uff0c\u4f46\u4e00\u6837\u7559\u4e0b\u6765\u4e0d\u5c11\u8ba9\u4e00\u4e2aAndroid\u5f00\u53d1\u96be\u582a\u7684\u95ee\u9898\uff1a<br \/>1\u3001\u4e0b\u62c9\u5237\u65b0\u5361\u987f\uff08\u8fd9\u4e2a\u53ef\u80fd\u4f1a\u53e6\u5916\u5f00\u7bc7\u8bb2\u8fd9\u4e2a\u95ee\u9898\uff0c\u5f53\u524d\u5148\u4fdd\u8bc1\u4e1a\u52a1\u903b\u8f91\u662f\u5bf9\u7684\uff09<br \/>2\u3001\u4e0a\u62c9\u52a0\u8f7d\u4e00\u4e0b\u5b50\u4f1a\u66f4\u65b0\u597d\u591a\u6b21\u6570\u636e<br \/>3\u3001\u6570\u636e\u771f\u7684\u62c9\u5b8c\u7684\u65f6\u5019\u63a5\u53e3\u8fd8\u5728\u8bf7\u6c42<br \/>4\u3001\u6570\u636e\u771f\u7684\u62c9\u5b8c\u7684\u65f6\u5019\u4e0b\u65b9\u90a3\u6761UI\u8fd8\u5728\u8f6c\u5708<br \/>5\u3001\u7a7a\u9875\u9762\u65f6\u5019\u70b9\u51fb\u4e00\u4e0b\u5c31\u4f1a\u89e6\u53d1\u7b2c\u4e8c\u9875\u7684\u5237\u65b0\u52a8\u4f5c\uff1f\uff1f\uff1f<\/p>\n<p>\u95ee\u9898\u51fa\u6765\u4e86\uff0c\u8fd9\u5c31\u5f00\u59cb\u4e00\u70b9\u70b9\u8bf4\u5427\uff1a<\/p>\n<h2>1\u3001 \u5148\u7aef\u51fa\u72b6\u6001\u6765\uff01<\/h2>\n<p>\u5bf9\u4e8e\u4ee5\u4e0a\u95ee\u98982\uff0c\u90a3\u5c31\u8be5\u796d\u51fa\u6765<code>bool isLoading = false<\/code>\u4e86\uff01<br \/>\u6211\u603b\u5f97\u9700\u8981\u8ba9\u524d\u7aefUI\u77e5\u9053\u540e\u7aef\u6b63\u5728\u52a0\u8f7d\u5427\uff0c\u7136\u540e\u7ed9\u8bf7\u6c42\u65b9\u6cd5\u5c0f\u5c0f\u7684\u6539\u9020\u4e00\u4e0b\uff1a<\/p>\n<h5>main_provider.dart\u8282\u9009<\/h5>\n<pre><code> Future&lt;void&gt; getListPage(int pageNum) async {\n    isLoading = true;\n    await DioUtil.getInstance().get(\n      &quot;http:\/\/192.168.5.116:20080\/contact\/listPage&quot;,\n      {\n        &#039;page&#039;: pageNum,\n        &#039;size&#039;: 10,\n      },\n          () {\n        _text = &quot;loading&quot;;\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) =&gt; ContactBean.fromJson(e))));\n        isLoading = false;\n        notifyListeners();\n      },\n          (reason) {\n        _text = reason;\n        isLoading = false;\n        notifyListeners();\n      },\n    );\n  }\n<\/code><\/pre>\n<p>\u5927\u6982\u610f\u601d\u5c31\u662f\u8bf4\u8c03\u7528\u8be5\u65b9\u6cd5\u65f6\u5019\u5148\u628aisLoading=true\uff0c\u4efb\u4f55\u60c5\u51b5\u4e0b\u65b9\u6cd5\u6267\u884c\u5b8c\u6210\u540e\uff08\u5305\u62ec\u51fa\u9519\uff09isLoading=false\uff0c\u8fd9\u6837\u7ba1\u4ed6UI\u5237\u65b0\u6d2a\u6c34\u6ed4\u5929\uff0c\u6211\u8bf4\u5728\u52a0\u8f7d\u5c31\u662f\u5728\u52a0\u8f7d\uff01<br \/>\u90a3UI\u600e\u4e48\u6539\u5462\uff1f<\/p>\n<h5>main.dart\u8282\u9009<\/h5>\n<pre><code>              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&lt;ScrollNotification&gt;(\n                    onNotification: (scrollInfo){\n                      if (scrollInfo.metrics.pixels == scrollInfo.metrics.maxScrollExtent) {\n                        \/\/ \u6eda\u52a8\u5230\u5e95\u90e8\uff0c\u52a0\u8f7d\u4e0b\u4e00\u9875\n                        if(!provider.isLoading){\n                          provider.addPage();\n                          provider.getListPage(provider.pageNum);\n                        }\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 &lt; provider.dataList.length) {\n                          return ListTile(\n                            title: Text(&#039;${provider.dataList[index].lastName} ${provider.dataList[index].firstName}&#039;),\n                            subtitle: Text(&#039;${provider.dataList[index].phoneNumber}&#039;),\n                            onTap: () async  {\n                              if(index%2==0){\n                                showToast(&#039;\u70b9\u51fb\u4e86\u7b2c${index+1}\u4e2a\u8054\u7cfb\u4eba\uff1a${provider.dataList[index].lastName} ${provider.dataList[index].firstName}&#039;,context: context);\n                              } else {\n                                var data =await showADialog(context, &#039;\u63d0\u793a&#039;,\n                                    &#039;\u70b9\u51fb\u4e86\u7b2c${index + 1}\u4e2a\u8054\u7cfb\u4eba\uff1a${provider\n                                        .dataList[index].lastName} ${provider\n                                        .dataList[index].firstName}&#039;);\n                                showToast(data.toString(), context: context);\n                              }\n                            },\n                          );\n                        } else {\n                          \/\/ \u663e\u793a\u52a0\u8f7d\u63d0\u793a\n                          return Center(child: CircularProgressIndicator());\n                        }\n                      },\n                    ),\n                  ),\n                )\n            )\n<\/code><\/pre>\n<p>\u5f53ListView UI\u6eda\u52a8\u5230\u5e95\u90e8\u7684\u65f6\u5019\u5982\u679cprovider\u7684isLoading\u4e3atrue\u7684\u8bdd\u5c31\u4f1a\u5ffd\u7565\u8c03\u7528\u4e0b\u4e00\u9875\u7684\u65b9\u6cd5\u3002<\/p>\n<p>\u6cbb\u5b8c\u95ee\u98982\uff0c\u8fd8\u6709\u95ee\u98983\u548c4\uff0c\u90a3\u5c31\u518d\u796d\u51fa\u4e00\u4e2a\u72b6\u6001\uff1a<code>bool finalPage = false<\/code><br \/>\u8fd9\u4e2a\u73a9\u610f\u5bf9UI\u80fd\u901a\u77e5\u786e\u5b9e\u662f\u52a0\u8f7d\u5b8c\u4e86\uff0c\u5bf9\u65b9\u6cd5\u80fd\u62e6\u622a\u4e4b\u540e\u7684\u65e0\u6548\u52a0\u8f7d\u3002<br \/>\u518d\u6539\u4e00\u4e0bprovider<\/p>\n<h5>main_provider.dart\u8282\u9009<\/h5>\n<pre><code> Future&lt;void&gt; getListPage(int pageNum) async {\n    if(finalPage){\n      return;\n    }\n    isLoading = true;\n    await DioUtil.getInstance().get(\n      &quot;http:\/\/192.168.5.116:20080\/contact\/listPage&quot;,\n      {\n        &#039;page&#039;: pageNum,\n        &#039;size&#039;: 10,\n      },\n          () {\n        _text = &quot;loading&quot;;\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) =&gt; ContactBean.fromJson(e))));\n        isLoading = false;\n        if(pageBean.current==pageBean.pages){\n          finalPage = true;\n        }\n        notifyListeners();\n      },\n          (reason) {\n        _text = reason;\n        isLoading = false;\n        notifyListeners();\n      },\n    );\n  }\n<\/code><\/pre>\n<p>\u5f53\u62c9\u5230\u63a5\u53e3\u7684\u6700\u540e\u4e00\u9875\u7684\u65f6\u5019\u5c31\u628afinalPage=true\u3002\u5982\u679c\u4e0b\u6b21\u8fd8\u8981\u89e6\u53d1\u8c03\u63a5\u53e3\uff0c\u5148\u770b\u770bfinalPage\uff0c\u5982\u679cfinalPage==true\u4e86\u76f4\u63a5return\u4e0d\u6267\u884c\u5566\uff01\u8fd9\u6837\u5c31\u80fd\u5b8c\u7f8e\u62e6\u622a\u63a5\u53e3\u8fd9\u8fb9\u7684\u8c03\u7528\u3002<br \/>\u5f53\u7136UI\u4e5f\u5f97\u6539\uff1a<\/p>\n<h5>main.dart\u8282\u9009<\/h5>\n<pre><code>              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&lt;ScrollNotification&gt;(\n                    onNotification: (scrollInfo){\n                      if (scrollInfo.metrics.pixels == scrollInfo.metrics.maxScrollExtent) {\n                        \/\/ \u6eda\u52a8\u5230\u5e95\u90e8\uff0c\u52a0\u8f7d\u4e0b\u4e00\u9875\n                        if(!provider.isLoading || !provider.finalPage){\n                          provider.addPage();\n                          provider.getListPage(provider.pageNum);\n                        }\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 &lt; provider.dataList.length) {\n                          return ListTile(\n                            title: Text(&#039;${provider.dataList[index].lastName} ${provider.dataList[index].firstName}&#039;),\n                            subtitle: Text(&#039;${provider.dataList[index].phoneNumber}&#039;),\n                            onTap: () async  {\n                              if(index%2==0){\n                                showToast(&#039;\u70b9\u51fb\u4e86\u7b2c${index+1}\u4e2a\u8054\u7cfb\u4eba\uff1a${provider.dataList[index].lastName} ${provider.dataList[index].firstName}&#039;,context: context);\n                              } else {\n                                var data =await showADialog(context, &#039;\u63d0\u793a&#039;,\n                                    &#039;\u70b9\u51fb\u4e86\u7b2c${index + 1}\u4e2a\u8054\u7cfb\u4eba\uff1a${provider\n                                        .dataList[index].lastName} ${provider\n                                        .dataList[index].firstName}&#039;);\n                                showToast(data.toString(), context: context);\n                              }\n                            },\n                          );\n                        } else {\n                          \/\/ \u663e\u793a\u52a0\u8f7d\u63d0\u793a\n                          return Center(child: provider.finalPage\n                              ? Text(&#039;\u6ca1\u6709\u66f4\u591a\u6570\u636e\u4e86&#039;)\n                              : CircularProgressIndicator()\n                          );\n                        }\n                      },\n                    ),\n                  ),\n                )\n            )\n<\/code><\/pre>\n<p>\u5728\u68c0\u67e5\u662f\u5426\u6b63\u5728\u52a0\u8f7d\u90a3\u518d\u52a0\u4e00\u4e2a\u6761\u4ef6\uff0c\u8fbe\u5230\u201c\u5982\u679c\u6ca1\u6709\u52a0\u8f7d\u6216\u4e0d\u662f\u6700\u540e\u4e00\u9875\u518d\u53bb\u5237\u65b0\u201d\u7684\u903b\u8f91\u6548\u679c<br \/>\u4e0b\u9762\u7684\u52a0\u8f7d\u63d0\u793a\u4e5f\u53ef\u4ee5\u501f\u8fd9\u4e2a\u6761\u4ef6\u53ef\u4ee5\u53d8\u6362\u4e00\u4e0b\uff0c\u52a0\u8f7d\u5b8c\u6700\u540e\u4e00\u884c\u5c31\u53ef\u4ee5\u63d0\u793a\u6ca1\u6709\u66f4\u591a\u6570\u636e\u4e86\u3002<\/p>\n<p><em>\u6ce8\uff1a\u8bb0\u5f97\u5728provider\u4e2d\u5237\u65b0\u7684\u65f6\u5019\u5c06\u72b6\u6001\u5f52\u4f4d\u54c8\uff01<\/em><\/p>\n<h2>2\u3001\u95ee\u98985\u7684\u53d1\u73b0\u548c\u89e3\u51b3\u65b9\u6cd5<\/h2>\n<p>\u6b63\u5f53\u6211\u4ee5\u4e3a\u5927\u529f\u544a\u6210\u7684\u65f6\u5019\uff0c\u6211\u8c8c\u4f3c\u78b0\u4e86\u4e00\u4e0b\u5c4f\u5e55\u5c31\u89e6\u53d1\u5237\u65b0\u6570\u636e\u4e86\u2014\u2014\u4f46\u5f88\u660e\u663e\u4e0d\u662f\u7b2c\u4e00\u9875\u7684\uff01<br \/>\u6570\u636e\u5e93\u67e5\u770b\u3001\u63a5\u53e3\u65e5\u5fd7\u5168\u90e8\u6307\u5411\u7b2c\u4e8c\u9875\uff01<br \/>\u867d\u8bf4provider\u4e2d_pageNum\u9ed8\u8ba4\u662f1\uff0c\u4f46\u8fd9\u56de\u89e6\u53d1\u7684\u4e0d\u662f\u4e0b\u62c9\u5237\u65b0\u662f\u4e0a\u62c9\u52a0\u8f7d\uff0c\u6211\u7b2c\u4e00\u9875\u6570\u636e\u8fd8\u6ca1\u8585\u56de\u6765\u5462\u76f4\u63a5\u8585\u7b2c\u4e8c\u9875\uff1f<br \/>\u90a3_pageNum\u9ed8\u8ba4\u7ed90\u5427\uff0c\u53cd\u6b63\u5237\u65b0\u540e\u4f1a\u7ed91\uff0c\u5982\u679c\u89e6\u53d1\u52a0\u8f7d\u7684\u8bdd0+1=1\u561b<br \/>\u6536\u5de5\uff01<\/p>\n<hr>\n<p><em><strong>\u81f3\u4e8e\u95ee\u98981\uff0c\u53ef\u80fd\u9700\u8981\u5355\u5f00\u4e00\u7bc7\u770b\u8fd9\u4e2a\u4e8b\u60c5<\/strong><\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e0a\u7bc7\u6587\u7ae0\u7684\u539f\u7406\u662f\u8bb2\u5b8c\u4e86\uff0c\u4f46\u4e00\u6837\u7559\u4e0b\u6765\u4e0d\u5c11\u8ba9\u4e00\u4e2aAndroid\u5f00\u53d1\u96be\u582a\u7684\u95ee\u9898\uff1a1\u3001\u4e0b\u62c9\u5237\u65b0\u5361\u987f\uff08\u8fd9\u4e2a\u53ef\u80fd\u4f1a\u53e6\u5916\u5f00 [&hellip;]<\/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-225","post","type-post","status-publish","format-standard","hentry","category-androidflutter"],"_links":{"self":[{"href":"https:\/\/www.bqmz001.top\/index.php\/wp-json\/wp\/v2\/posts\/225","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=225"}],"version-history":[{"count":33,"href":"https:\/\/www.bqmz001.top\/index.php\/wp-json\/wp\/v2\/posts\/225\/revisions"}],"predecessor-version":[{"id":258,"href":"https:\/\/www.bqmz001.top\/index.php\/wp-json\/wp\/v2\/posts\/225\/revisions\/258"}],"wp:attachment":[{"href":"https:\/\/www.bqmz001.top\/index.php\/wp-json\/wp\/v2\/media?parent=225"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bqmz001.top\/index.php\/wp-json\/wp\/v2\/categories?post=225"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bqmz001.top\/index.php\/wp-json\/wp\/v2\/tags?post=225"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}