{"id":125076,"date":"2020-06-12T15:56:41","date_gmt":"2020-06-12T07:56:41","guid":{"rendered":"http:\/\/4563.org\/?p=125076"},"modified":"2020-06-12T15:56:41","modified_gmt":"2020-06-12T07:56:41","slug":"%e4%bb%8e-0-%e5%bc%80%e5%a7%8b%e8%ae%be%e8%ae%a1-flutter-%e7%8b%ac%e7%ab%8b-app-%e7%ac%ac%e4%b8%80%e7%af%87-%e6%95%b0%e6%8d%ae%e5%ba%93%e4%b8%8e%e7%8a%b6%e6%80%81%e7%ae%a1%e7%90%86","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=125076","title":{"rendered":"\u4ece 0 \u5f00\u59cb\u8bbe\u8ba1 Flutter \u72ec\u7acb APP | \u7b2c\u4e00\u7bc7: \u6570\u636e\u5e93\u4e0e\u72b6\u6001\u7ba1\u7406"},"content":{"rendered":"
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\u4ece 0 \u5f00\u59cb\u8bbe\u8ba1 Flutter \u72ec\u7acb APP | \u7b2c\u4e00\u7bc7: \u6570\u636e\u5e93\u4e0e\u72b6\u6001\u7ba1\u7406 <\/h1>\n

<\/p>\n

\n
\u8cc7\u6df1\u5927\u4f6c : vifird <\/span> <\/i> 8<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
<\/p>\n

\u9274\u4e8e Flutter \u9ad8\u6027\u80fd\u6e32\u67d3\u548c\u8de8\u5e73\u53f0\u7684\u4f18\u52bf\uff0c\u95ea\u70b9\u6e05\u5355\u5728\u79fb\u52a8\u7aef APP \u4e0a\uff0c\u4f7f\u7528\u4e86\u5b8c\u6574\u7684 Flutter \u6846\u67b6\u6765\u5f00\u53d1\u3002\u65e2\u7136\u662f\u5b8c\u6574 APP\uff0c\u67b6\u6784\u642d\u5efa\u5b8c\u5168\u4e0d\u53d7\u5386\u53f2 Native APP \u7684\u5f71\u54cd\uff0c\u6ca1\u6709\u5386\u53f2\u5305\u88b1\u7684\u6c89\u6dc0\uff0c\u8bbe\u8ba1\u4e5f\u80fd\u66f4\u7075\u6d3b\u548c\u5065\u58ee\u3002<\/p>\n

\"\u4ece<\/p>\n

\u9996\u5148\u5217\u4e3e\u90e8\u5206\u95ea\u70b9\u6e05\u5355\u7684\u4e1a\u52a1\u7279\u6027\uff08\u8f83\u4e3a\u901a\u7528\u7684\u4e1a\u52a1\u7279\u6027\uff09\uff1a<\/p>\n

    \n
  1. \u672c\u5730\u6709\u8f83\u5927\u6570\u636e\u91cf\u7684\u6e05\u5355\u6570\u636e\uff0c\u79bb\u7ebf\u53ef\u7528\uff0c\u672a\u767b\u5f55\u53ef\u7528\uff1b\u767b\u5f55\u540e\u9700\u8981\u670d\u52a1\u5668\u6570\u636e\u540c\u6b65<\/li>\n
  2. \u72b6\u6001\u53d8\u66f4\u573a\u666f\u591a\uff0c\u524d\u7aef\u72b6\u6001\u903b\u8f91\u8f83\u4e3a\u590d\u6742\uff0c\u8de8\u9875\u9762\u3001\u8de8\u7ec4\u4ef6\u72b6\u6001\u66f4\u65b0\u9891\u7e41<\/li>\n<\/ol>\n

    \u8fd9\u51e0\u4e2a\u4e1a\u52a1\u70b9\uff0c\u8bbe\u8ba1\u5230\u7684\u6280\u672f\u9009\u578b\u6709\uff1a\u672c\u5730\u6570\u636e\u5e93\u3001\u524d\u7aef\u72b6\u6001\u7ba1\u7406\uff0c\u5bf9\u5f88\u591a\u4e1a\u52a1\u6765\u8bf4\uff0c\u8fd9\u51e0\u70b9\u90fd\u662f\u6bd4\u8f83\u6838\u5fc3\u7684\u4e1c\u897f\uff0c\u4e5f\u662f\u6211\u4eec\u4eca\u5929\u91cd\u70b9\u8981\u8bb2\u7684\u5185\u5bb9\u3002<\/p>\n

    \u6570\u636e\u5e93\u9009\u578b<\/h2>\n

    \u6570\u636e\u5e93\u9009\u578b\uff0c\u9996\u5148\u8981\u5b9a\u7684\uff0c\u5c31\u662f\u9009\u62e9\u6570\u636e\u5e93\u7c7b\u578b\uff1a\u5173\u7cfb\u578b\u6570\u636e\u5e93\u3001\u975e\u5173\u7cfb\u578b\u6570\u636e\u5e93\u8fd8\u662f Key\/Value \u5b58\u50a8\u3002<\/p>\n

    \u5bf9\u4e8e\u5173\u7cfb\u578b\u6570\u636e\u5e93\uff0c\u53ef\u9009\u7684\u6709\u6bd4\u5982\uff1aSQLite \u3001Core Data \u3001GreenDao \u7b49\uff1b\u5bf9\u4e8e\u975e\u5173\u7cfb\u578b\u6570\u636e\u5e93\uff0c\u53ef\u9009\u6709 Realm \u3001UnQLite \u7b49\uff1b\u5bf9\u4e8e Key\/Value \u5b58\u50a8\uff0c\u6709\u6bd4\u5982 Redis \u3001Berkeley DB \u3001Level DB \u7b49\u3002<\/p>\n

    \u7531\u4e8e\u4e1a\u52a1\u5f62\u6001\u5177\u6709\u590d\u6742\u7684\u67e5\u8be2\u573a\u666f\uff0c\u6240\u4ee5\u9996\u5148\u6392\u9664\u4e86 Key\/Value \u5b58\u50a8\uff1b\u7136\u540e\u9274\u4e8e\u4e1a\u52a1\u8fed\u4ee3\u9891\u7e41\uff0c\u6570\u636e\u7ed3\u6784\u53d8\u52a8\u8f83\u5927\uff0c\u6240\u4ee5\u5b8c\u5168\u7684\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4f7f\u7528\u6210\u672c\u4f1a\u8f83\u9ad8\uff0c\u7248\u672c\u66f4\u65b0\u65f6\u5728\u6570\u636e\u517c\u5bb9\u548c\u6570\u636e\u6e05\u6d17\u65b9\u9762\u8981\u505a\u8f83\u591a\u7684\u5de5\u4f5c\uff1b\u6240\u4ee5\u6211\u4eec\u91c7\u7528\u4e86 NoSQL \u6570\u636e\u5e93\uff0c\u6216\u8005\u652f\u6301 JSON \u7c7b\u578b\u7684\u5173\u7cfb\u578b\u6570\u636e\u5e93\u3002<\/p>\n

    Flutter \u76ee\u524d\u5728 NoSQL \u4e0a\u7684\u53ef\u9009\u9879\u5e76\u4e0d\u591a\uff0cRealm \u3001UnQLite \u7b49\u5747\u672a\u652f\u6301\uff08\u5f53\u7136\u53ef\u4ee5\u901a\u8fc7 Flutter FFI \u6765\u5c01\u88c5\u7ed9 Dart \u7528\uff0c\u4f46\u6210\u672c\u8fc7\u9ad8\uff09\uff1b Flutter \u7684 sqflite \u63d2\u4ef6\u53ef\u4ee5\u8f83\u597d\u5730\u652f\u6301 SQLite\uff0c\u4f46\u7531\u4e8e SQLite \u5728 3.9 \u4ee5\u540e\u624d\u652f\u6301 JSON \u6570\u636e\uff0c\u8003\u8651\u5230 Android \u7248\u672c\uff08Android \u5404\u7248\u672c\u4f7f\u7528\u7684 SQLite \u7248\u672c\u6587\u6863\uff09\u517c\u5bb9\u95ee\u9898\uff0c\u6211\u4eec\u5e76\u6ca1\u6709\u91c7\u7528 sqflite \uff1b\u6211\u4eec\u6700\u7ec8\u91c7\u7528\u7684\u6570\u636e\u5e93\u662fSembast\uff0c\u4e00\u4e2a\u8fd8\u6bd4\u8f83\u5c0f\u4f17\uff0c\u4f46\u6027\u80fd\u548c API \u5efa\u8bbe\u90fd\u8fd8\u4e0d\u9519\u7684 NoSQL \u6570\u636e\u5e93\u3002<\/p>\n

    \"\u4ece<\/p>\n

    Sembast \u4ecb\u7ecd<\/strong><\/p>\n

    Sembast API \u5f88\u7b80\u6d01\uff0c\u4f46\u80fd\u652f\u6301\u8f83\u590d\u6742\u7684\u6570\u636e\u5e93\u64cd\u4f5c\u3002 \u5728\u6570\u636e\u67e5\u8be2\u4e0a\uff0c\u80fd\u591f\u901a\u8fc7\u7b80\u5355\u7684\u903b\u8f91 API\uff0c\u901a\u8fc7\u805a\u5408\u6784\u9020\u51fa\u590d\u6742\u7684\u903b\u8f91\u67e5\u8be2\u8bed\u53e5\uff1b\u6570\u636e\u6392\u5e8f\u5b9e\u73b0\u4e5f\u6bd4\u8f83\u5b8c\u6574\uff0c\u652f\u6301\u591a\u5b57\u6bb5\u6392\u5e8f\uff08\u4f46\u4e0d\u652f\u6301 bool \u7c7b\u578b\u6392\u5e8f\uff09\uff1b\u5bf9\u4e8b\u52a1\u64cd\u4f5c\u4e5f\u6709\u652f\u6301\uff1b\u652f\u6301\u6574\u578b\u81ea\u589e key \u3002<\/p>\n

    Sembast \u90e8\u5206 API \u9884\u89c8<\/strong><\/p>\n

    var store = intMapStoreFactory.store('animals');  \/\/ \u4e8b\u52a1\u5904\u7406 await db.transaction((txn) async {   await store.add(txn, {'name': 'fish'});   await store.add(txn, {'name': 'cat'});   await store.add(txn, {'name': 'dog'}); });  \/\/ \u6570\u636e\u67e5\u8be2 var finder = Finder(     filter: Filter.greaterThan('name', 'cat'),     sortOrders: [SortOrder('name')]); var records = await store.find(db, finder: finder);  expect(records.length, 2); expect(records[0]['name'], 'dog'); expect(records[1]['name'], 'fish'); <\/code><\/pre>\n
    \u4f46\u7531\u4e8e\u5bf9\u5c0f\u4f17\u6570\u636e\u5e93\u524d\u9014\u7684\u62c5\u5fe7\u8003\u8651\uff0c\u6211\u4eec\u8bbe\u8ba1\u4e86\u4fbf\u4e8e\u8fc1\u79fb\u7684\u6570\u636e\u67b6\u6784\uff0c\u5bf9\u6570\u636e\u64cd\u4f5c\u5c42\u505a\u4e86\u4e00\u5c42\u62bd\u8c61\uff0c\u540e\u671f\u5982\u679c\u8fc1\u79fb\u6570\u636e\u5e93\uff0c\u4e1a\u52a1\u5c42\u53ef\u4ee5\u5b8c\u5168\u4e0d\u9700\u8981\u6539\u52a8\u3002<\/p>\n
    \u72b6\u6001\u7ba1\u7406\u9009\u578b<\/h2>\n
    \u72b6\u6001\u7ba1\u7406\uff0c\u5728\u5982\u4eca\u7684\u524d\u7aef\u6280\u672f\u4e2d\uff0c\u662f\u975e\u5e38\u91cd\u8981\u7684\u4e00\u73af\uff0c\u597d\u7684\u72b6\u6001\u7ba1\u7406\u6846\u67b6\uff0c\u53ef\u4ee5\u8ba9\u4e1a\u52a1\u66f4\u597d\u5f97\u89e3\u8026\u3001\u7b80\u5316\u7ec4\u4ef6\u6570\u636e\u901a\u8baf\u6210\u672c\u3001\u5927\u5e45\u63d0\u5347\u5f00\u53d1\u4f53\u9a8c\u3002\u6211\u4eec\u5728\u72b6\u6001\u7ba1\u7406\u9009\u578b\u4e0a\u82b1\u4e86\u8f83\u591a\u7684\u65f6\u95f4\u6765\u5bf9\u6bd4\u5404\u79cd\u65b9\u6848\uff0c\u6bd4\u5982\uff1aprovider\u3001bloc\u3001redux\u3001scoped_model\u3001mobx\u3001\u751a\u81f3\u4e1a\u754c\u7f51\u7ea2\u56e2\u961f\u7684fish-redux\u3002\u6211\u4eec\u6700\u7ec8\u91c7\u7528\u7684\u662f mobx\uff0c\u5173\u4e8e\u5404\u4e2a\u65b9\u6848\u7684\u5bf9\u6bd4\uff0c\u4e00\u7bc7\u6587\u7ae0\u8bb2\u4e0d\u5b8c\uff0c\u6211\u4eec\u6700\u7ec8\u9009\u62e9 mobx\uff0c\u66f4\u591a\u662f\u56e0\u4e3a\u5b83\u7684 API \u66f4\u53cb\u597d\u3002<\/p>\n
    Mobx \u91c7\u7528\u6ce8\u89e3\u7684\u65b9\u5f0f\u6765\u5b9a\u4e49\u72b6\u6001\uff0c\u5e76\u5c01\u88c5\u4e86\u4e00\u4e2a Widget \u7528\u4e8e Widget \u7684\u6570\u636e\u66f4\u65b0\uff0c\u5b66\u4e60\u3001\u4f7f\u7528\u6210\u672c\u8f83\u4f4e\u3002<\/p>\n
    \"\u4ece<\/p>\n
    \u6ce8\u89e3\u5b9a\u4e49<\/h3>\n
    Mobx \u7684\u6ce8\u89e3\u4f7f\u7528\u65b9\u5f0f\uff0c\u4e0e Web \u4e2d\u7684 Vue \u975e\u5e38\u7c7b\u4f3c\u5982:<\/p>\n
      \n
    1. \u4f7f\u7528 @observable \u6765\u6ce8\u89e3\u4e00\u4e2a\u5c5e\u6027\uff0c\u8868\u793a\u5176\u9700\u8981\u88ab\u76d1\u542c\uff0cMobx \u4f1a\u81ea\u52a8\u4e3a\u5176\u6dfb\u52a0 getter \u548c setter<\/li>\n
    2. \u4f7f\u7528 @computed \u6765\u6ce8\u89e3\u4e00\u4e2a\u8ba1\u7b97\u5c5e\u6027<\/li>\n
    3. \u4f7f\u7528 @action \u6765\u6ce8\u89e3\u4e00\u4e2a\u4fee\u6539 store \u7684\u65b9\u6cd5\uff0c\u7c7b\u4f3c\u4e8e Vuex \u91cc\u7684 mutations<\/li>\n<\/ol>\n
      \u793a\u4f8b\u4ee3\u7801\uff1a<\/strong><\/p>\n
      import 'package:mobx\/mobx.dart';  part 'counter.g.dart';  class Counter = CounterBase with _$Counter;  abstract class CounterBase with Store {   @observable   int value = 0;    @computed   int get allowCount {     return value*2;   }    @action   void increment() {     value++;   } } <\/code><\/pre>\n
      \u4f7f\u7528 Mobx \u5fc5\u987b\u7684\u4e00\u4e2a\u6b65\u9aa4\uff0c\u5c31\u662f\u524d\u7f6e\u7f16\u8bd1\u6b65\u9aa4\u3002\u6211\u4eec\u7f16\u5199 Mobx \u7684\u72b6\u6001\u811a\u672c\uff0c\u9700\u8981\u5728\u524d\u7f6e\u7f16\u8bd1\u73af\u8282\uff0c\u7f16\u8bd1\u6210 dart \u53ef\u8bfb\u7684\u811a\u672c\uff0c\u4e3a\u6b64\u6211\u4eec\u9700\u8981\u6267\u884cflutter pub run build_runner build<\/code>\u751f\u6210.g.dart<\/code>\u4e3a\u540e\u7f00\u7684\u6587\u4ef6\uff08\u5176\u5b9e\u5c31\u662f\u5c06\u6ce8\u89e3\u8f6c\u4e49\u4e3a getter \u548c setter \uff09\u3002 UI \u66f4\u65b0\u65b9\u5f0f<\/p>\n
      UI \u66f4\u65b0\u65b9\u5f0f<\/h3>\n
      \u9700\u8981\u4f7f\u7528 Mobx \u7684 Widget\uff0c\u4f7f\u7528 Observer \u5305\u88c5\u4e00\u5c42\uff0c\u8fd9\u6837\u5176\u5c31\u53ef\u4ee5\u76f8\u5e94 Mobx \u7684\u72b6\u6001\u53d8\u5316\uff0c\u5982:<\/p>\n
      Observer(   builder: (context) => Text('\u6635\u79f0: ${userStore.user.username}'), ) <\/code><\/pre>\n
      \u524d\u7f6e\u7f16\u8bd1\u811a\u672c<\/h3>\n
      Dart \u5728\u7f16\u8bd1\u65f6\u548c\u8fd0\u884c\u65f6\u5747\u65e0\u6cd5\u652f\u6301\u6ce8\u89e3\uff0c\u6240\u4ee5 Mobx \u4f7f\u7528\u4e86\u524d\u7f6e\u7f16\u8bd1\u811a\u672c\u89e3\u6790\u6ce8\u89e3\u52a8\u6001\u751f\u6210 Dart \u4ee3\u7801\u7684\u65b9\u5f0f\uff08 Dart \u5b98\u65b9\u652f\u6301\uff09\u3002Mobx \u6ce8\u89e3\u65b9\u5f0f\u4f7f\u7528\u524d\uff0c\u9700\u8981\u4e3a\u9879\u76ee\u6dfb\u52a0build_runner<\/code>\u548cmobx_codegen<\/code>\u4f9d\u8d56\u3002build_runner\u4e3a Dart \u5b98\u65b9\u63d0\u4f9b\uff0c\u7528\u4e8e\u5728\u6784\u5efa\u9879\u76ee\u4e4b\u524d\u6267\u884c\u7279\u5b9a\u4efb\u52a1\uff0c\u4efb\u52a1\u914d\u7f6e\u4e8e\u4f9d\u8d56\u5e93\u7684build.yaml<\/code>\u811a\u672c\u4e2d; mobx_codegen<\/code>\u4f9d\u8d56\u4e8e\u8be5build_runner<\/code>\u5c06\u6ce8\u89e3\u751f\u6210\u53ef\u6267\u884c\u7684 Dart \u4ee3\u7801\uff08\u5982\u6dfb\u52a0 getter \u548c setter \u65b9\u6cd5\uff09\u3002<\/p>\n
      \u7ed3\u5c3e<\/h2>\n
      \u72b6\u6001\u7ba1\u7406\u548c\u6570\u636e\u5e93\uff0c\u662f\u524d\u7aef\u9879\u76ee\u57fa\u7840\u6846\u67b6\u7684\u91cd\u8981\u73af\u8282\uff0c\u8bbe\u8ba1\u597d\u4e86\u53ef\u4ee5\u5f88\u597d\u5730\u63d0\u5347\u5f00\u53d1\u4f53\u9a8c\u548c\u6548\u7387\uff0c\u964d\u4f4e\u540e\u7eed\u5f00\u53d1\u7ef4\u62a4\u6210\u672c\u3002<\/p>\n
      \u8bb2\u5230\u8fd9\u91cc\uff0c\u8fd8\u5e76\u6ca1\u6709\u5b8c\u6210\u57fa\u7840\u6846\u67b6\u7684\u642d\u5efa\uff0c\u540e\u9762\u6211\u4eec\u4f1a\u8bb2\u89e3\u66f4\u591a\u7684 Flutter \u67b6\u6784\u8bbe\u8ba1\u5185\u5bb9\uff0c\u6bd4\u5982\uff1a\u56fd\u9645\u5316\u3001\u901a\u77e5\u3001\u5206\u4eab\u3001UI \u8bbe\u8ba1\u7b49\u7b49\u3002<\/p>\n
      \u6301\u7eed\u5206\u4eab\u95ea\u70b9\u6e05\u5355\u5728 Flutter \u4e0a\u7684\u5f00\u53d1\u7ecf\u9a8c\uff0c\u95ea\u70b9\u6e05\u5355\u79fb\u52a8\u7aef APP \u4f53\u9a8c\uff1a<\/p>\n
      \u786c\u5e7f\uff0c\u5f88\u786c<\/h2>\n
      \u95ea\u70b9\u6e05\u5355PC \u7aef APP: \u4e1a\u754c\u552f\u4e00\u4e00\u6b3e\u60ac\u6d6e\u6e05\u5355\u8f6f\u4ef6<\/strong><\/em> \"\u4ece<\/p>\n
      \u95ea\u70b9\u6e05\u5355\u79fb\u52a8\u7aef APP\uff1a \"\u4ece<\/p>\n<\/p><\/div>\n
       \u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (4<\/span>)        <\/div>\n
       <\/div>\n<\/p><\/div>\n<\/p><\/div>\n
        \n
      • \n
        \n
        \n
         \u8cc7\u6df1\u5927\u4f6c : weixiangzhe <\/span>  <\/div>\n
         <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                     \u652f\u6301\u4e00\u4e0b                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
      • \n
        \n
        \n
         \u8cc7\u6df1\u5927\u4f6c : JormunChan <\/span>  <\/div>\n
         <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                     \u9a6c\u514b\u4e00\u4e0b                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
      • \n
        \n
        \n
         \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : vifird <\/span>  <\/div>\n
         <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                     @weixiangzhe \u611f\u8c22\u611f\u8c22                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
      • \n
        \n
        \n
         \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : vifird <\/span>  <\/div>\n
         <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                     @JormunChan \u611f\u8c22\u611f\u8c22                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
      • \n","protected":false},"excerpt":{"rendered":"
        \u4ece 0 \u5f00\u59cb\u8bbe\u8ba1 Flutter …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/125076"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=125076"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/125076\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=125076"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=125076"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=125076"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}