GetX框架的snackbar if (dateTime == null || DateTime.now().difference(dateTime!) > Duration(seconds: 2)) { dateTime = DateTime.now(); Get.snackbar( '', '', titleText: Text( '再按一次退出', style: TextStyle( color: appColor.white, fontSize: 15, fontWeight: FontWeight.bold), ), messageText: Text( '消息', style: TextStyle( color: appColor.white, fontSize: 12, fontWeight: FontWeight.bold, ), ), snackPosition: SnackPosition.TOP, barBlur: 5, icon: Align( alignment: Alignment.center, child: SvgPicture.asset( myImages.LogoWhite, width: 20, height: 20, ), ), ); return false; } return true; },

正则匹配文中是否有加密货币 getTextTokenName({required String text}) { List cryptoNames = []; String str = "$text"; RegExp r = RegExp(r"$[a-zA-Z]*");Iterable matches = r.allMatches(text); for (Match m in matches) {cryptoNames.add(m.group(0)!.substring(1)); print(cryptoNames);} return cryptoNames;}

Flutter 使用辅助线 debugPaintSizeEnabled = true; //显示辅助线（开发使用）

FLutter 失去键盘输入焦点 import 'package:flutter/material.dart'; import 'package:flutter/services.dart'; getKeyboardLosesFocus(BuildContext context) { SystemChannels.textInput.invokeMapMethod('TextInput.hide'); FocusScope.of(context).unfocus(); }

flutter 隐藏中间省略号 class systemOverflowTextCenter extends StatelessWidget { final String text; final Color? color; const systemOverflowTextCenter({Key? key, required this.text, this.color}) : super(key: key); @override Widget build(BuildContext context) { String? overText; overText = text.replaceRange( text.length - (text.length - 4), text.length - 4, '......'); return Text( overText, style: GoogleFonts.notoSans( color: color != null ? color : appColor.white, fontWeight: FontWeight.bold), ); } }