{"id":60028,"date":"2026-01-14T21:41:42","date_gmt":"2026-01-14T13:41:42","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/60028.html"},"modified":"2026-01-14T21:41:42","modified_gmt":"2026-01-14T13:41:42","slug":"flutter-%e9%a1%b9%e7%9b%ae%e4%b8%ad%ef%bc%8c%e5%93%aa%e4%ba%9b%e7%8a%b6%e6%80%81%e6%9c%80%e5%ae%b9%e6%98%93%e8%a2%ab%e8%af%af%e5%88%a4%e4%b8%ba%e5%85%a8%e5%b1%80%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/60028.html","title":{"rendered":"Flutter \u9879\u76ee\u4e2d\uff0c\u54ea\u4e9b\u72b6\u6001\u6700\u5bb9\u6613\u88ab\u8bef\u5224\u4e3a\u5168\u5c40\uff1f"},"content":{"rendered":"

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\u5b50\u73a5\u9171 \u00b7 \u524d\u7aef\u6210\u957f\u8bb0\u5f55\u5b98 \u2728 👋 \u5982\u679c\u4f60\u6b63\u5728\u505a\u524d\u7aef，\u6216\u51c6\u5907\u957f\u671f\u8d70\u524d\u7aef\u8fd9\u6761\u8def 📚 \u5173\u6ce8\u6211，\u7b2c\u4e00\u65f6\u95f4\u83b7\u53d6\u524d\u7aef\u884c\u4e1a\u8d8b\u52bf\u4e0e\u5b9e\u8df5\u603b\u7ed3 🎁 \u53ef\u9886\u53d6 11 \u7c7b\u524d\u7aef\u8fdb\u9636\u5b66\u4e60\u8d44\u6e90（\u5de5\u7a0b\u5316 \/ \u6846\u67b6 \/ \u8de8\u7aef \/ \u9762\u8bd5 \/ \u67b6\u6784） 💡 \u4e00\u8d77\u628a\u6280\u672f\u5b66\u201c\u660e\u767d\u201d，\u4e5f\u7528\u201c\u5230\u4f4d\u201d<\/p>\n

\u6301\u7eed\u5199\u4f5c，\u6301\u7eed\u8fdb\u9636\u3002 \u613f\u6211\u4eec\u90fd\u80fd\u5728\u4ee3\u7801\u548c\u751f\u6d3b\u91cc，\u8d70\u5f97\u66f4\u7a33\u4e00\u70b9 🌱<\/p>\n<\/p>\n

\u6587\u7ae0\u76ee\u5f55<\/h4>\n
    \n
  • \n
      \n
    • \u5f15\u8a00<\/li>\n
    • \u5168\u5c40\u72b6\u6001\u4e0d\u662f\u201c\u65b9\u4fbf\u201d，\u800c\u662f\u201c\u627f\u8bfa\u201d<\/li>\n
    • \u9875\u9762 UI \u72b6\u6001，\u88ab\u8bef\u5224\u4e3a\u201c\u4e1a\u52a1\u72b6\u6001\u201d<\/li>\n
    • \n
        \n
      • \u5e38\u89c1\u8868\u73b0<\/li>\n
      • \u4e3a\u4ec0\u4e48\u5bb9\u6613\u88ab\u8bef\u5224？<\/li>\n
      • \u5b9e\u9645\u95ee\u9898\u5728\u54ea？<\/li>\n
      • \u66f4\u5408\u7406\u7684\u5199\u6cd5<\/li>\n<\/ul>\n<\/li>\n
      • \u7f51\u7edc\u8bf7\u6c42\u72b6\u6001，\u88ab\u5f53\u6210\u201c\u5171\u4eab\u6570\u636e\u6e90\u201d<\/li>\n
      • \n
          \n
        • \u5e38\u89c1\u5199\u6cd5<\/li>\n
        • \u4e3a\u4ec0\u4e48\u770b\u8d77\u6765\u5408\u7406？<\/li>\n
        • \u771f\u6b63\u7684\u95ee\u9898\u662f\u4ec0\u4e48？<\/li>\n
        • \u66f4\u5408\u7406\u7684\u62c6\u5206\u65b9\u5f0f<\/li>\n
        • \n
            \n
          • \u6570\u636e\u80fd\u529b\u5c42（\u53ef\u5168\u5c40）<\/li>\n
          • \u9875\u9762\u72b6\u6001\u5c42（\u9875\u9762\u79c1\u6709）<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n
          • \u8868\u5355\u72b6\u6001，\u88ab\u9519\u8bef\u62bd\u8c61\u6210\u5168\u5c40\u6a21\u578b<\/li>\n
          • \n
              \n
            • \u5e38\u89c1\u5199\u6cd5<\/li>\n
            • \u5b9e\u9645\u540e\u679c<\/li>\n
            • \u66f4\u5065\u5eb7\u7684\u65b9\u5f0f<\/li>\n<\/ul>\n<\/li>\n
            • \u6743\u9650 \/ \u53ef\u89c1\u6027\u72b6\u6001，\u88ab\u65e0\u9650\u653e\u5927<\/li>\n
            • \n
                \n
              • \u5e38\u89c1\u5199\u6cd5<\/li>\n
              • \u95ee\u9898\u4e0d\u5728\u6743\u9650，\u800c\u5728\u7c92\u5ea6<\/li>\n
              • \u66f4\u5065\u5eb7\u7684\u65b9\u5f0f<\/li>\n<\/ul>\n<\/li>\n
              • \u4e34\u65f6\u4e1a\u52a1\u4e2d\u95f4\u6001，\u88ab\u5f53\u6210\u957f\u671f\u72b6\u6001<\/li>\n
              • \n
                  \n
                • \u5e38\u89c1\u4f8b\u5b50<\/li>\n
                • \u4e3a\u4ec0\u4e48\u5371\u9669？<\/li>\n<\/ul>\n<\/li>\n
                • \u4e00\u4e2a\u975e\u5e38\u5b9e\u7528\u7684\u5224\u65ad\u6e05\u5355<\/li>\n
                • \u603b\u7ed3<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n

                  \u5f15\u8a00<\/h3>\n

                  \u5728 Flutter \u9879\u76ee\u91cc，\u5f88\u591a\u201c\u72b6\u6001\u5931\u63a7\u201d\u7684\u95ee\u9898，\u5e76\u4e0d\u662f\u4e00\u5f00\u59cb\u5c31\u9009\u9519\u4e86\u72b6\u6001\u7ba1\u7406\u65b9\u6848，\u800c\u662f\u7b2c\u4e00\u6b65\u5c31\u628a\u72b6\u6001\u653e\u9519\u4e86\u4f4d\u7f6e\u3002<\/p>\n

                  \u4f60\u56de\u5934\u770b\u90a3\u4e9b\u53d8\u590d\u6742\u7684\u9879\u76ee，\u5f80\u5f80\u4f1a\u53d1\u73b0\u4e00\u4e2a\u5171\u540c\u70b9：<\/p>\n

                  \u4e00\u4e9b\u672c\u8be5\u53ea\u6d3b\u5728\u9875\u9762\u91cc\u7684\u72b6\u6001，\u88ab\u8fc7\u65e9\u5730\u3001\u7406\u76f4\u6c14\u58ee\u5730\u653e\u8fdb\u4e86\u5168\u5c40\u3002<\/p>\n

                  \u800c\u4e00\u65e6\u8fdb\u4e86\u5168\u5c40，\u5c31\u51e0\u4e4e\u518d\u4e5f\u56de\u4e0d\u53bb\u4e86\u3002<\/p>\n

                  \u8fd9\u7bc7\u6587\u7ae0\u5c31\u6765\u62c6\u4e00\u62c6： \u5728 Flutter \u9879\u76ee\u4e2d，\u54ea\u4e9b\u72b6\u6001\u6700\u5bb9\u6613\u88ab\u8bef\u5224\u4e3a\u201c\u5168\u5c40\u72b6\u6001\u201d，\u4ee5\u53ca\u4e3a\u4ec0\u4e48\u5b83\u4eec\u8fdf\u65e9\u4f1a\u6210\u4e3a\u7ef4\u62a4\u6210\u672c\u7684\u6e90\u5934\u3002<\/p>\n

                  \u5168\u5c40\u72b6\u6001\u4e0d\u662f\u201c\u65b9\u4fbf\u201d，\u800c\u662f\u201c\u627f\u8bfa\u201d<\/h3>\n

                  \u5728\u5f00\u59cb\u5217\u6e05\u5355\u4e4b\u524d，\u5148\u660e\u786e\u4e00\u4ef6\u4e8b\u3002<\/p>\n

                  \u5f53\u4f60\u628a\u4e00\u4e2a\u72b6\u6001\u653e\u8fdb\u5168\u5c40（Provider \/ Riverpod \/ Bloc \/ Redux），\u4f60\u5176\u5b9e\u662f\u5728\u505a\u4e00\u4e2a\u957f\u671f\u627f\u8bfa：<\/p>\n

                    \n
                  • \u8fd9\u4e2a\u72b6\u6001\u53ef\u80fd\u88ab\u5f88\u591a\u5730\u65b9\u4f9d\u8d56<\/li>\n
                  • \u751f\u547d\u5468\u671f\u957f\u4e8e\u9875\u9762<\/li>\n
                  • \u6bcf\u4e00\u6b21\u4fee\u6539，\u90fd\u8981\u8003\u8651\u5386\u53f2\u4f7f\u7528\u8005<\/li>\n<\/ul>\n

                    \u4e5f\u5c31\u662f\u8bf4：<\/p>\n

                    \u5168\u5c40\u72b6\u6001\u4e0d\u662f\u201c\u597d\u4e0d\u597d\u7528\u201d\u7684\u95ee\u9898，\u800c\u662f\u201c\u503c\u4e0d\u503c\u5f97\u957f\u671f\u80cc\u201d\u7684\u95ee\u9898\u3002<\/p>\n

                    \u5982\u679c\u4e00\u4e2a\u72b6\u6001\u4e0d\u503c\u5f97\u4f60\u4e3a\u5b83\u627f\u62c5\u8fd9\u4e9b\u4ee3\u4ef7，\u5b83\u5c31\u4e0d\u5e94\u8be5\u662f\u5168\u5c40\u7684\u3002<\/p>\n

                    \u9875\u9762 UI \u72b6\u6001，\u88ab\u8bef\u5224\u4e3a\u201c\u4e1a\u52a1\u72b6\u6001\u201d<\/h3>\n

                    \u8fd9\u662f\u6700\u5e38\u89c1\u3001\u4e5f\u662f\u6700\u9690\u853d\u7684\u4e00\u7c7b\u3002<\/p>\n

                    \u5e38\u89c1\u8868\u73b0<\/h4>\n
                      \n
                    • \u5f53\u524d Tab \u7d22\u5f15<\/li>\n
                    • \u5217\u8868\u9009\u4e2d\u9879<\/li>\n
                    • \u662f\u5426\u5c55\u5f00 \/ \u6298\u53e0<\/li>\n
                    • \u662f\u5426\u5c55\u793a\u67d0\u4e2a\u6d6e\u5c42<\/li>\n<\/ul>\n

                      \u4f60\u5f88\u53ef\u80fd\u89c1\u8fc7\u8fd9\u6837\u7684\u4ee3\u7801：<\/p>\n

                      final<\/span> selectedTabProvider =<\/span> StateProvider<\/span><<\/span>int><\/span><\/span>(<\/span>(<\/span>ref)<\/span> =<\/span>><\/span> 0<\/span>)<\/span>;<\/span><\/p>\n

                      \u7136\u540e\u5728\u591a\u4e2a Widget \u4e2d：<\/p>\n

                      final<\/span> tab =<\/span> ref.<\/span>watch<\/span>(<\/span>selectedTabProvider)<\/span>;<\/span><\/p>\n

                      \u4e3a\u4ec0\u4e48\u5bb9\u6613\u88ab\u8bef\u5224？<\/h4>\n

                      \u56e0\u4e3a\u5b83\u4eec\u770b\u8d77\u6765\u50cf\u662f：<\/p>\n

                        \n
                      • \u591a\u4e2a Widget \u90fd\u8981\u7528<\/li>\n
                      • \u5207\u6362\u65f6\u8981\u540c\u6b65<\/li>\n
                      • \u4e0d\u60f3\u4e00\u5c42\u5c42\u4f20\u53c2\u6570<\/li>\n<\/ul>\n

                        \u4e8e\u662f\u5f88\u81ea\u7136\u5730\u8fdb\u4e86\u5168\u5c40\u3002<\/p>\n

                        \u5b9e\u9645\u95ee\u9898\u5728\u54ea？<\/h4>\n

                        \u8fd9\u7c7b\u72b6\u6001\u7684\u771f\u5b9e\u751f\u547d\u5468\u671f\u5176\u5b9e\u662f：<\/p>\n

                        \u9875\u9762\u5b58\u5728 \u2192 \u72b6\u6001\u6709\u610f\u4e49 \u9875\u9762\u9500\u6bc1 \u2192 \u72b6\u6001\u5e94\u8be5\u6d88\u5931<\/p>\n

                        \u4f46\u4e00\u65e6\u8fdb\u4e86\u5168\u5c40，\u5c31\u4f1a\u51fa\u73b0：<\/p>\n

                          \n
                        • \u9875\u9762\u9000\u51fa，\u72b6\u6001\u8fd8\u5728<\/li>\n
                        • \u518d\u6b21\u8fdb\u5165\u9875\u9762，\u72b6\u6001\u88ab\u201c\u7ee7\u627f\u201d<\/li>\n
                        • \u7528\u6237\u770b\u5230\u7684\u4e0d\u662f\u521d\u59cb UI，\u800c\u662f\u4e0a\u6b21\u6b8b\u7559\u72b6\u6001<\/li>\n<\/ul>\n

                          \u8fd9\u7c7b\u95ee\u9898\u5f80\u5f80\u88ab\u63cf\u8ff0\u6210：<\/p>\n

                          \u201c\u5076\u73b0 UI \u9519\u4e71\u201d \u201c\u590d\u73b0\u4e0d\u4e86\u7684\u5c55\u793a\u95ee\u9898\u201d<\/p>\n

                          \u95ee\u9898\u4e0d\u662f bug，\u800c\u662f\u72b6\u6001\u8bed\u4e49\u9519\u4f4d\u3002<\/p>\n

                          \u66f4\u5408\u7406\u7684\u5199\u6cd5<\/h4>\n

                          UI \u884c\u4e3a\u72b6\u6001，\u9ed8\u8ba4\u5c31\u5e94\u8be5\u662f\u9875\u9762\u79c1\u6709：<\/p>\n

                          class<\/span> _PageState extends<\/span> State<\/span><<\/span>Page<\/span>><\/span><\/span> {<\/span>
                          \n int selectedTab =<\/span> 0<\/span>;<\/span>
                          \n bool expanded =<\/span> false<\/span>;<\/span>
                          \n}<\/span><\/p>\n

                          \u6216\u8005\u5982\u679c\u4f60\u4f7f\u7528 ViewModel：<\/p>\n

                          class<\/span> PageViewModel<\/span> extends<\/span> ChangeNotifier<\/span> {<\/span>
                          \n int selectedTab =<\/span> 0<\/span>;<\/span>
                          \n bool expanded =<\/span> false<\/span>;<\/span>
                          \n}<\/span><\/p>\n

                          \u53ea\u6709\u5f53\u4f60\u975e\u5e38\u786e\u5b9a：<\/p>\n

                            \n
                          • \u5b83\u8de8\u9875\u9762<\/li>\n
                          • \u6709\u660e\u786e\u4e1a\u52a1\u542b\u4e49<\/li>\n
                          • \u751f\u547d\u5468\u671f\u9700\u8981\u5ef6\u957f<\/li>\n<\/ul>\n

                            \u624d\u8003\u8651\u628a\u5b83\u63d0\u5347\u4e3a\u5168\u5c40\u72b6\u6001\u3002<\/p>\n

                            \u7f51\u7edc\u8bf7\u6c42\u72b6\u6001，\u88ab\u5f53\u6210\u201c\u5171\u4eab\u6570\u636e\u6e90\u201d<\/h3>\n

                            \u8fd9\u4e00\u7c7b\u5728 Flutter \u9879\u76ee\u4e2d\u975e\u5e38\u9ad8\u53d1\u3002<\/p>\n

                            \u5e38\u89c1\u5199\u6cd5<\/h4>\n

                            final<\/span> userListProvider =<\/span>
                            \n StateNotifierProvider<\/span><<\/span>UserListNotifier<\/span>,<\/span> AsyncValue<\/span><<\/span>List<\/span><<\/span>User<\/span>><\/span>><\/span>><\/span><\/span>(<\/span>
                            \n (<\/span>ref)<\/span> =<\/span>><\/span> UserListNotifier<\/span>(<\/span>)<\/span>,<\/span>
                            \n)<\/span>;<\/span><\/p>\n

                            \u7136\u540e：<\/p>\n

                              \n
                            • A \u9875\u9762\u89e6\u53d1\u52a0\u8f7d<\/li>\n
                            • B \u9875\u9762\u76f4\u63a5 watch<\/li>\n
                            • C \u9875\u9762\u4fee\u6539\u5217\u8868<\/li>\n<\/ul>\n

                              \u770b\u8d77\u6765\u975e\u5e38\u201c\u5e72\u51c0\u201d\u3002<\/p>\n

                              \u4e3a\u4ec0\u4e48\u770b\u8d77\u6765\u5408\u7406？<\/h4>\n

                              \u56e0\u4e3a\u4ece\u63a5\u53e3\u89c6\u89d2\u770b：<\/p>\n

                                \n
                              • \u6570\u636e\u6765\u81ea\u540c\u4e00\u4e2a API<\/li>\n
                              • \u591a\u4e2a\u9875\u9762\u786e\u5b9e\u8981\u5c55\u793a<\/li>\n<\/ul>\n

                                \u4f46\u8fd9\u91cc\u6709\u4e00\u4e2a\u975e\u5e38\u5173\u952e\u7684\u8bef\u533a：<\/p>\n

                                \u63a5\u53e3\u4e00\u81f4 \u2260 \u72b6\u6001\u4e00\u81f4<\/p>\n

                                \u771f\u6b63\u7684\u95ee\u9898\u662f\u4ec0\u4e48？<\/h4>\n

                                \u7f51\u7edc\u8bf7\u6c42\u72b6\u6001，\u901a\u5e38\u662f：<\/p>\n

                                  \n
                                • \u88ab\u9875\u9762\u9a71\u52a8<\/li>\n
                                • \u548c\u5f53\u524d UI \u4e0a\u4e0b\u6587\u5f3a\u7ed1\u5b9a<\/li>\n
                                • \u548c\u52a0\u8f7d\u65f6\u673a\u3001\u9519\u8bef\u5904\u7406\u5f3a\u76f8\u5173<\/li>\n<\/ul>\n

                                  \u4e00\u65e6\u628a\u5b83\u505a\u6210\u5168\u5c40，\u5c31\u4f1a\u51fa\u73b0\u8fd9\u4e9b\u95ee\u9898：<\/p>\n

                                    \n
                                  • A \u9875\u9762 loading，B \u9875\u9762\u4e5f loading<\/li>\n
                                  • A \u9875\u9762\u5931\u8d25，B \u9875\u9762\u8ddf\u7740 error<\/li>\n
                                  • \u8c01\u5237\u65b0\u4e86\u6570\u636e，\u5b8c\u5168\u4e0d\u53ef\u63a7<\/li>\n<\/ul>\n

                                    \u5c24\u5176\u5728\u5206\u9875\u3001\u7b5b\u9009\u3001\u591a\u6761\u4ef6\u573a\u666f\u4e0b，\u95ee\u9898\u4f1a\u6307\u6570\u7ea7\u653e\u5927\u3002<\/p>\n

                                    \u66f4\u5408\u7406\u7684\u62c6\u5206\u65b9\u5f0f<\/h4>\n

                                    \u5e94\u8be5\u62c6\u6210\u4e24\u5c42：<\/p>\n

                                    \u6570\u636e\u80fd\u529b\u5c42（\u53ef\u5168\u5c40）<\/h5>\n

                                    class<\/span> UserRepository<\/span> {<\/span>
                                    \n Future<\/span><<\/span>List<\/span><<\/span>User<\/span>><\/span>><\/span><\/span> fetchUsers<\/span>(<\/span>)<\/span> async<\/span> {<\/span>
                                    \n .<\/span>.<\/span>.<\/span>
                                    \n }<\/span>
                                    \n}<\/span><\/p>\n

                                    \u9875\u9762\u72b6\u6001\u5c42（\u9875\u9762\u79c1\u6709）<\/h5>\n

                                    class<\/span> UserListViewModel<\/span> extends<\/span> ChangeNotifier<\/span> {<\/span>
                                    \n bool loading =<\/span> false<\/span>;<\/span>
                                    \n List<\/span><<\/span>User<\/span>><\/span><\/span> users =<\/span> [<\/span>]<\/span>;<\/span><\/p>\n

                                    Future<\/span><<\/span>void<\/span>><\/span><\/span> load<\/span>(<\/span>)<\/span> async<\/span> {<\/span>
                                    \n loading =<\/span> true<\/span>;<\/span>
                                    \n notifyListeners<\/span>(<\/span>)<\/span>;<\/span><\/p>\n

                                    users =<\/span> await<\/span> repository.<\/span>fetchUsers<\/span>(<\/span>)<\/span>;<\/span><\/p>\n

                                    loading =<\/span> false<\/span>;<\/span>
                                    \n notifyListeners<\/span>(<\/span>)<\/span>;<\/span>
                                    \n }<\/span>
                                    \n}<\/span><\/p>\n

                                    \u5168\u5c40\u5171\u4eab\u7684\u662f\u201c\u80fd\u529b\u201d，\u4e0d\u662f\u201c\u72b6\u6001\u7ed3\u679c\u201d\u3002<\/p>\n

                                    \u8868\u5355\u72b6\u6001，\u88ab\u9519\u8bef\u62bd\u8c61\u6210\u5168\u5c40\u6a21\u578b<\/h3>\n

                                    \u8868\u5355\u662f\u72b6\u6001\u81a8\u80c0\u7684\u91cd\u707e\u533a\u3002<\/p>\n

                                    \u5e38\u89c1\u5199\u6cd5<\/h4>\n

                                    final<\/span> formProvider =<\/span>
                                    \n StateProvider<\/span><<\/span>FormData<\/span>><\/span><\/span>(<\/span>(<\/span>ref)<\/span> =<\/span>><\/span> FormData<\/span>(<\/span>)<\/span>)<\/span>;<\/span><\/p>\n

                                    \u7406\u7531\u901a\u5e38\u662f：<\/p>\n

                                      \n
                                    • \u5b57\u6bb5\u591a<\/li>\n
                                    • \u6b65\u9aa4\u590d\u6742<\/li>\n
                                    • \u540e\u9762\u9875\u9762\u8fd8\u8981\u7528<\/li>\n<\/ul>\n

                                      \u5b9e\u9645\u540e\u679c<\/h4>\n

                                      \u4f60\u4f1a\u6162\u6162\u9047\u5230\u8fd9\u4e9b\u95ee\u9898：<\/p>\n

                                        \n
                                      • \u9875\u9762\u8fd4\u56de，\u8868\u5355\u6ca1\u6e05\u7a7a<\/li>\n
                                      • \u518d\u8fdb\u6d41\u7a0b，\u6570\u636e\u662f\u65e7\u7684<\/li>\n
                                      • \u8c03\u8bd5\u65f6\u5b8c\u5168\u4e0d\u77e5\u9053\u6570\u636e\u4ece\u54ea\u6765\u7684<\/li>\n<\/ul>\n

                                        \u8868\u5355\u72b6\u6001，\u672c\u8d28\u4e0a\u662f：<\/p>\n

                                        \u4e00\u6b21\u7528\u6237\u64cd\u4f5c\u8fc7\u7a0b\u7684\u4e34\u65f6\u72b6\u6001<\/p>\n

                                        \u5b83\u4e0d\u5177\u5907\u957f\u671f\u5b58\u5728\u7684\u4ef7\u503c\u3002<\/p>\n

                                        \u66f4\u5065\u5eb7\u7684\u65b9\u5f0f<\/h4>\n
                                          \n
                                        • \u8868\u5355\u72b6\u6001\u8ddf\u968f\u6d41\u7a0b\u5bf9\u8c61<\/li>\n
                                        • \u6d41\u7a0b\u7ed3\u675f\u7acb\u5373\u9500\u6bc1<\/li>\n
                                        • \u6700\u7ec8\u7ed3\u679c\u518d\u8f6c\u6362\u4e3a\u4e1a\u52a1\u6a21\u578b<\/li>\n<\/ul>\n

                                          class<\/span> FormFlowState<\/span> {<\/span>
                                          \n final<\/span> String<\/span> name;<\/span>
                                          \n final<\/span> int age;<\/span>
                                          \n}<\/span><\/p>\n

                                          \u5168\u5c40\u72b6\u6001\u4e0d\u5e94\u8be5\u4fdd\u5b58\u201c\u8349\u7a3f\u201d\u3002<\/p>\n

                                          \u6743\u9650 \/ \u53ef\u89c1\u6027\u72b6\u6001，\u88ab\u65e0\u9650\u653e\u5927<\/h3>\n

                                          \u8fd9\u4e00\u7c7b\u901a\u5e38\u5728\u9879\u76ee\u4e2d\u540e\u671f\u51fa\u73b0\u3002<\/p>\n

                                          \u5e38\u89c1\u5199\u6cd5<\/h4>\n

                                          final<\/span> permissionProvider =<\/span>
                                          \n Provider<\/span><<\/span>PermissionState<\/span>><\/span><\/span>(<\/span>(<\/span>ref)<\/span> =<\/span>><\/span> .<\/span>.<\/span>.<\/span>)<\/span>;<\/span><\/p>\n

                                          \u7136\u540e UI \u4e2d\u5230\u5904\u662f：<\/p>\n

                                          if<\/span> (<\/span>ref.<\/span>watch<\/span>(<\/span>permissionProvider)<\/span>.<\/span>canEdit)<\/span> .<\/span>.<\/span>.<\/span><\/p>\n

                                          \u95ee\u9898\u4e0d\u5728\u6743\u9650，\u800c\u5728\u7c92\u5ea6<\/h4>\n

                                          \u6743\u9650\u672c\u8eab\u6ca1\u95ee\u9898，\u95ee\u9898\u5728\u4e8e：<\/p>\n

                                            \n
                                          • \u6743\u9650\u662f\u7528\u6237\u7ef4\u5ea6<\/li>\n
                                          • \u53ef\u89c1\u6027\u662f\u9875\u9762\u8bed\u4e49<\/li>\n<\/ul>\n

                                            \u5f53\u4f60\u76f4\u63a5\u7528\u5168\u5c40\u6743\u9650\u63a7\u5236 UI：<\/p>\n

                                              \n
                                            • \u9875\u9762\u903b\u8f91\u88ab\u201c\u5916\u90e8\u6761\u4ef6\u201d\u52ab\u6301<\/li>\n
                                            • \u7ec4\u4ef6\u590d\u7528\u6027\u4e0b\u964d<\/li>\n
                                            • UI \u89c4\u5219\u6563\u843d\u5404\u5904<\/li>\n<\/ul>\n

                                              \u66f4\u5065\u5eb7\u7684\u65b9\u5f0f<\/h4>\n
                                                \n
                                              • \u5168\u5c40\u53ea\u4fdd\u7559\u539f\u59cb\u6743\u9650\u6570\u636e<\/li>\n
                                              • \u9875\u9762\u5185\u505a UI \u51b3\u7b56<\/li>\n<\/ul>\n

                                                final<\/span> canEdit =<\/span> permission.<\/span>canEdit &&<\/span> pageState.<\/span>isEditable;<\/span><\/p>\n

                                                \u8ba9 UI \u611f\u77e5\u6743\u9650，\u4f46\u4e0d\u4f9d\u8d56\u6743\u9650\u3002<\/p>\n

                                                \u4e34\u65f6\u4e1a\u52a1\u4e2d\u95f4\u6001，\u88ab\u5f53\u6210\u957f\u671f\u72b6\u6001<\/h3>\n

                                                \u8fd9\u662f\u6700\u5371\u9669\u3001\u4e5f\u6700\u9690\u853d\u7684\u4e00\u7c7b\u3002<\/p>\n

                                                \u5e38\u89c1\u4f8b\u5b50<\/h4>\n
                                                  \n
                                                • \u5f53\u524d\u6d41\u7a0b\u7b2c\u51e0\u6b65<\/li>\n
                                                • \u662f\u5426\u5df2\u786e\u8ba4<\/li>\n
                                                • \u67d0\u5f39\u7a97\u662f\u5426\u5c55\u793a\u8fc7<\/li>\n<\/ul>\n

                                                  \u4e00\u5f00\u59cb\u53ea\u662f\u4e34\u65f6\u9700\u6c42，\u540e\u6765\u5374\u6f14\u5316\u6210：<\/p>\n

                                                  final<\/span> flowStateProvider =<\/span>
                                                  \n StateProvider<\/span><<\/span>FlowState<\/span>><\/span><\/span>(<\/span>(<\/span>ref)<\/span> =<\/span>><\/span> FlowState<\/span>(<\/span>)<\/span>)<\/span>;<\/span><\/p>\n

                                                  \u4e3a\u4ec0\u4e48\u5371\u9669？<\/h4>\n

                                                  \u56e0\u4e3a\u8fd9\u7c7b\u72b6\u6001：<\/p>\n

                                                    \n
                                                  • \u5f3a\u4f9d\u8d56\u5177\u4f53\u6d41\u7a0b<\/li>\n
                                                  • \u751f\u547d\u5468\u671f\u4e0d\u7a33\u5b9a<\/li>\n
                                                  • \u590d\u7528\u4ef7\u503c\u6781\u4f4e<\/li>\n<\/ul>\n

                                                    \u4f46\u4e00\u65e6\u5168\u5c40\u5316，\u5c31\u4f1a：<\/p>\n

                                                      \n
                                                    • \u88ab\u5176\u4ed6\u6d41\u7a0b\u201c\u987a\u624b\u590d\u7528\u201d<\/li>\n
                                                    • \u6210\u4e3a\u9690\u85cf\u8026\u5408\u70b9<\/li>\n
                                                    • \u5f88\u96be\u5b89\u5168\u5220\u9664<\/li>\n<\/ul>\n

                                                      \u4e00\u4e2a\u975e\u5e38\u5b9e\u7528\u7684\u5224\u65ad\u6e05\u5355<\/h3>\n

                                                      \u5728\u4f60\u51c6\u5907\u628a\u4e00\u4e2a\u72b6\u6001\u653e\u8fdb\u5168\u5c40\u524d，\u53ef\u4ee5\u95ee\u81ea\u5df1\u8fd9 5 \u4e2a\u95ee\u9898：<\/p>\n

                                                    • \u9875\u9762\u9500\u6bc1\u540e，\u8fd9\u4e2a\u72b6\u6001\u8fd8\u6709\u610f\u4e49\u5417？<\/li>\n
                                                    • \u8fd9\u4e2a\u72b6\u6001\u80fd\u660e\u786e\u8bf4\u51fa\u201c\u5c5e\u4e8e\u8c01\u201d\u5417？<\/li>\n
                                                    • \u5982\u679c\u4e0d\u7528\u5168\u5c40，\u6211\u662f\u4e0d\u662f\u53ea\u662f\u5acc\u4f20\u53c2\u9ebb\u70e6？<\/li>\n
                                                    • \u8fd9\u4e2a\u72b6\u6001\u662f\u5426\u4f1a\u88ab\u591a\u4e2a\u4e1a\u52a1\u8bed\u4e49\u4f7f\u7528？<\/li>\n
                                                    • \u65b0\u540c\u5b66\u80fd\u5426\u5feb\u901f\u7406\u89e3\u5b83\u7684\u5f71\u54cd\u8303\u56f4？<\/li>\n

                                                      \u53ea\u8981\u6709 2 \u4e2a\u95ee\u9898\u7b54\u4e0d\u4e0a\u6765， \u5b83\u5927\u6982\u7387\u5c31\u4e0d\u8be5\u662f\u5168\u5c40\u72b6\u6001\u3002<\/p>\n

                                                      \u603b\u7ed3<\/h3>\n

                                                      Flutter \u9879\u76ee\u4e2d\u7684\u72b6\u6001\u5931\u63a7，\u5f88\u5c11\u662f\u7a81\u7136\u53d1\u751f\u7684，\u800c\u662f：<\/p>\n

                                                      \u4e00\u4e2a\u4e2a\u201c\u770b\u8d77\u6765\u5408\u7406\u201d\u7684\u5168\u5c40\u72b6\u6001，\u6162\u6162\u5806\u51fa\u6765\u7684\u3002<\/p>\n

                                                      \u771f\u6b63\u62c9\u5f00\u9879\u76ee\u5dee\u8ddd\u7684\u4ece\u6765\u4e0d\u662f：<\/p>\n

                                                        \n
                                                      • \u7528 Provider \u8fd8\u662f Riverpod<\/li>\n
                                                      • \u7528 Bloc \u8fd8\u662f Redux<\/li>\n<\/ul>\n

                                                        \u800c\u662f\u4f60\u80fd\u4e0d\u80fd\u5728\u4e00\u5f00\u59cb\u5c31\u5206\u6e05：<\/p>\n

                                                        \u54ea\u4e9b\u72b6\u6001\u503c\u5f97\u88ab\u957f\u671f\u627f\u62c5， \u54ea\u4e9b\u72b6\u6001\u5e94\u8be5\u5c3d\u5feb\u9500\u6bc1\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

                                                        \u5b50\u73a5\u9171 （\u6398\u91d1 \/ \u77e5\u4e4e \/ CSDN \/ \u7b80\u4e66 \u540c\u540d） \u5927\u5bb6\u597d，\u6211\u662f \u5b50\u73a5\u9171，\u4e00\u540d\u957f\u671f\u6df1\u8015\u5728\u4e00\u7ebf\u7684\u524d\u7aef\u7a0b\u5e8f\u5a9b 👩\u200d💻\u3002\u66fe\u5c31\u804c\u4e8e\u591a\u5bb6\u77e5\u540d\u4e92\u8054\u7f51\u5927\u5382，\u76ee\u524d\u5728\u67d0\u56fd\u4f01\u8d1f\u8d23\u524d\u7aef\u8f6f\u4ef6\u7814\u53d1\u76f8\u5173\u5de5\u4f5c，\u4e3b\u8981\u805a\u7126\u4e8e\u4e1a\u52a1\u578b\u7cfb\u7edf\u7684\u5de5\u7a0b\u5316\u5efa\u8bbe\u4e0e\u957f\u671f\u7ef4\u62a4\u3002
                                                        \n\u6211\u6301\u7eed\u8f93\u51fa\u548c\u6c89\u6dc0\u524d\u7aef\u9886\u57df\u7684\u5b9e\u6218\u7ecf\u9a8c，\u65e5\u5e38\u5173\u6ce8\u5e76\u5206\u4eab\u7684\u6280\u672f\u65b9\u5411\u5305\u62ec \u524d\u7aef\u5de5\u7a0b\u5316\u3001\u5c0f\u7a0b\u5e8f\u3001React \/ RN\u3001Flut<\/p>\n","protected":false},"author":2,"featured_media":60026,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[2878,1654],"topic":[],"class_list":["post-60028","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-flutter","tag-1654"],"yoast_head":"\nFlutter \u9879\u76ee\u4e2d\uff0c\u54ea\u4e9b\u72b6\u6001\u6700\u5bb9\u6613\u88ab\u8bef\u5224\u4e3a\u5168\u5c40\uff1f - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/60028.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Flutter \u9879\u76ee\u4e2d\uff0c\u54ea\u4e9b\u72b6\u6001\u6700\u5bb9\u6613\u88ab\u8bef\u5224\u4e3a\u5168\u5c40\uff1f - 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