端加载Native的字体文件,但是在代码实现过程中,实际上有些地方是可以进行优化的,例如在Flutter中加载字体的异步方法中,我们可以构建一个枚举,根据不同的状态值,来修改代码的执行逻辑,例如增加:「...> loadFontIfNeeded(String fontFamily) 全局字体 在Flutter中,我们通常会根据自己项目的特点,封装一些Text组件,...
import'package:flutter/services.dart';///吐司类型 [LENGTH_SHORT]短时间,[LENGTH_LONG]长时间enumToast{LENGTH_SHORT,LENGTH_LONG}///吐司类classIaToast{staticconstMethodChannel _channel=//方法渠道名constMethodChannel('www.toly1994.com.flutter_journey.toast');staticshow(//静态方法显示吐司{String msg,Toa...
voidmain() {//使用print(Season.SPRING.seasonName);//output: 春天}//枚举类enumSeason{ SPRING,//春天SUMMER,//夏天AUTUWN,//秋天WINTER//冬天}//对枚举类的拓展extensionPrintSeasononSeason{//枚举变量的实现方法StringgetseasonName{switch(this){caseSeason.SPRING:return'春天';caseSeason.SUMMER:return'夏...
定义toJson方法将枚举类型的所有信息打印Map<String, dynamic> toJson() { return {'name': name, 'weight': weight}; } 完整代码enum Animal { dog(name: 'dog', weight: 20), cat(name: 'cat', weight: 6); const Animal({required this.name, required this.weight}); factory Animal.fromName(...
StoreConnector<int, String>( converter: (store) => store.state.toString(), builder: (context, count) { return Text( 'The button has been pushed this many times: $count', style: Theme.of(context).textTheme.display1, ); }, ) ], ), ), // Connect the Store to a FloatingAction...
Color?color=EnumTypeToValueList.fromString<Color>("red");print(color);// 输出: Color.red 5. 完整示例 import'package:flutter/material.dart';import'package:enum_type_to_value_list/enum_type_to_value_list.dart';enumColor{red,green,blue,}voidmain(){runApp(MyApp());}classMyAppextendsStateles...
final String title; FlutterReduxApp({Key key, this.store, this.title}) : super(key: key); @override Widget build(BuildContext context) { // The StoreProvider should wrap your MaterialApp or WidgetsApp. This will // ensure all routes have access to the store. ...
enum HttpMethod { GET, POST, DELETE } /// 针对于使用层面 abstract class BaseRequest { //统一的域名 String authority() { return "api.bilibili.com"; } //参数 var pathParams; //http://baidu.com/x/aa Map<String, String> params = Map(); //params //请求头 Map<String, dynamic> head...
and pass that String to the `builder` function// as the `count`./// Every time the button is tapped, an action is dispatched and// run through the reducer. After the reducer updates the state,// the Widget will be automatically rebuilt with the latest// count. No need to manually ma...
String jsonString = jsonEncode(response.data); print(jsonString); // 解析JSON字符串 Map<String, dynamic> json = jsonDecode(jsonString); // 获取特定字段值 imgPath.value = json['imgurl']; } @override Widget build(BuildContext context) { ...