values; assert(colors[2] == Color.blue); 你可以在 switch 语句 中使用枚举。如果 e 在 switch (e) 是显式类型的枚举,那么如果你不处理所有的枚举值将会弹出警告: 代码语言:javascript 代码运行次数:0 复制Cloud Studio 代码运行 // 枚举测试 enum LGColor{ blue, green, orange } // 在枚举中每个值...
final String traceEventsFilePath = globals.fs.path.join(getBuildDirectory(), 'start_up_trace_events.json'); final File traceEventsFile = globals.fs.file(traceEventsFilePath); final List<Map<String, dynamic>> events = List<Map<String, dynamic>>.from((timeline['traceEvents'] as List<dynamic>)...
rawInsert( 'INSERT INTO items(name) VALUES("Item 1")'); print('Inserted row id: $id'); }); } _queryData() async { List<Map> result = await _database.rawQuery('SELECT * FROM items'); print(result); } @override Widget build(BuildContext context) { return Scaffold( appBar: App...
abstract class AppletHandler { /// /// 转发小程序 /// /// /// void forwardApplet(Map<String, dynamic> appletInfo); /// ///获取用户信息 /// "userId" /// "nickName" /// "avatarUrl" /// "jwt" /// "accessToken" /// Future<Map<String, dynamic>> getUserInfo(); /// 获取自...
Update chip docs to clarify how to specify a shape with no border & explain default values for Material 3 by @TahaTesser in #134298 InputDecoration.error should activate error state by @Renzo-Olivares in #134001 Remove TextPainter migration flag from the framework by @LongCatIsLooong in #13...
("getPlatformVersion")){Log.e("onMethodCall",call.method);result.success("Android "+android.os.Build.VERSION.RELEASE);Map<String,String>map=newHashMap<>();map.put("message","message");channel.invokeMethod("onMessageTest",map);}else{result.notImplemented();}}/// FlutterPlugin 的两个 方...
INSERT INTO my_table(id, name) VALUES(1, 'Jack'); 在上面的SQL语句中,我们向my_table表插入了一条新的数据,id字段的值为1,name字段的值为’Jack’。 3.3 查询数据 在SQL中,我们使用SELECT语句来查询数据。以下是查询所有数据的示例代码: SELECT * FROM my_table; ...
mapType: MapType.hybrid #164624 closed Mar 6, 2025 Reformat `flutter/cocoon` using the latest Dartfmt #164647 closed Mar 6, 2025 TabBar flickers when skipping multiple tabs #164615 closed Mar 6, 2025 [Impeller] Could not decompress image on intel macOS #134399 closed Mar 6, ...
: ProvinceModel.fromMapList(resp.data); } /// 请求市内的区 Future> requestAllDistricts(String proid, String cityid) async { var resp = await Application.http .getRequest('${WeatherApi.WEATHER_PROVINCE}/$proid/$cityid', error: (msg) => _logger.log(msg, 'district')); return resp =...
query.map((t) => Task.fromMap(t)).toList() : [];print('getAll in database: ${tasks.length} , ${tasks[0].title},${tasks[1].title}');return tasks;}//delete sql by idFuture<void> delete(int id) async {var db = await database;await db?.rawDelete('DELETE FROM timerdata ...