String host, int port) => true); final request = await client .getUrl(Uri.parse(url)) .timeout(Duration(seconds: 5)); HttpClientResponse response = await request.close(); var responseBody = await
= await i18nFeature.getTranslation(widget.labelText); if (mounted) { setState(() { _translatedLabel = translation ?? widget.labelText; }); } } void _validateInput(String value) async { print("input validation working"); if (widget.validator != null) { final errorText = widget.validator...
],),// method1: Padding -> child// methods2: PaddingPadding(padding:constEdgeInsets.only(top:10.0),child:SizedBox(width:120,child:ElevatedButton(child:Text('登录'),onPressed:()async{Stringmobile=controller.text;Stringcode=codeController.text;if(RegExp(RegParttern.mobileParttern).hasMatch(...
These Widgets allows you to manage a single value, and keep the state ephemeral and locally. We have flavours for Reactive and Simple. For instance, you might use them to toggle obscureText in a TextField, maybe create a custom Expandable Panel, or maybe modify the current index in Bottom...
And in the UI, when you want to show that value and update the screen whenever the values changes, simply do this:Obx(() => Text("${controller.name}")); That's all. It's that simple.More details about state managementSee an more in-depth explanation of state management here. There...
TextField(decoration:constInputDecoration(border:OutlineInputBorder(),labelText:'Contact Name',),) 但是Flutter 是声明式 UI 编程,我们无法像 Android 里那样拿到 TextField 的实例,类似这样(textFieldInstance.text)获取到内部的输入内容。 不过,办法还是有的,只是略有不同而已。
+ 'isFlutter': true, - // 'icon': Icons.text_fields, - }, { - 'path': '/transfer', - 'label': 'Transfer', - 'subtitle': '穿梭框', - // 'icon': Icons.text_fields, - }, - ] -}; + // 'icon': Icons.text_fields, + }, + { + 'path': '/transfer', + 'label'...
if (controller.value.hasError) { Fluttertoast.showToast( msg: 'Camera error ${controller.value.errorDescription}', toastLength: Toast.LENGTH_SHORT, gravity: ToastGravity.CENTER, backgroundColor: Colors.red, textColor: Colors.white); } }); ...
import 'package:flutter/material.dart'; void main() { runApp(MyApp()); } class MyApp extends StatelessWidget { @override Widget build(BuildContext context) { return MaterialApp( title: 'Flutter Demo', theme: ThemeData( primarySwatch: Col...
And in the UI, when you want to show that value and update the screen whenever the values changes, simply do this: Obx(()=>Text("${controller.name}")); That's all. It'sthatsimple. More details about state management See an more in-depth explanation of state managementhere. There yo...