一小时前,当我将 TextField 放在 AlertDialog 中时,我发现了一个奇怪的行为,它不允许输入空间,否则它的行为正常这是我的代码:
//================Flutter Doctor -v [√] Flutter(Channel stable, 2.0.2, on Microsoft Windows [Version 10.0.18363.1316], locale en-US) • Flutter 版本 2.0.2,位于 C:\Flutter\flutter-latest • 框架修订版 8962f6dc68(5 天前),2021-03-11 13:22:20 -0800 • 引擎修订版 5d8bf811b3 • Dart 版本 2.12.1
[√] Android 工具链 - 为 Android 设备开发(Android SDK 版本 29.0.3) • Android SDK 位于 C:\Users\user\AppData\Local\Android\sdk • 平台 android-30,构建工具 29.0.3 • Java二进制文件位于:C:\Program Files\Android\Android Studio\jre\bin\java • Java 版本 OpenJDK 运行时环境(内部版本 1.8.0_202-release-1483-b03) • 接受所有 Android 许可证。
[√] Chrome - 为网络开发 • C:\Users\user\AppData\Local\Google\Chrome\Application\chrome.exe 中的 Chrome
[√] Visual Studio - 为 Windows 开发(Visual Studio Community 2019 16.9.0) • Visual Studio 位于 C:\Program Files (x86)\Microsoft Visual Studio\2019\Community • Visual Studio Community 2019 版本 16.9.31025.194 • Windows 10 SDK 版本 10.0.19041.0
[√] Android Studio(版本 3.5) • C:\Program Files\Android\Android Studio 中的 Android Studio • Flutter 插件版本 42.1.1 • Dart 插件版本 191.8593 • Java 版本 OpenJDK 运行时环境(内部版本 1.8.0_202-release-1483 -b03)
[√] IntelliJ IDEA 社区版(2020.2 版) • IntelliJ 位于 C:\Program Files\JetBrains\IntelliJ IDEA 社区版 2020.2.1 • 可以从以下位置安装 Flutter 插件: https ://plugins.jetbrains.com/plugin/9212 -flutter • Dart 插件可以从以下位置安装: https ://plugins.jetbrains.com/plugin/6351-dart
[√] VS Code(版本 1.54.3) • VS Code 位于 C:\Users\user\AppData\Local\Programs\Microsoft VS Code • Flutter 扩展版本 3.20.0
[√] 连接的设备(3 个可用) • Windows(桌面) • windows • windows-x64 • Microsoft Windows [版本 10.0.18363.1316] • Chrome(网络) • chrome • web-javascript • Google Chrome 89.0.4389.82 • Edge(网络) • 边缘 • web-javascript • Microsoft Edge 89.0.774.54
• 未发现任何问题!
//======AppTextField widget
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
class AppTextField extends StatefulWidget {
final String caption;
final dynamic initialValue;
final dynamic Function(String) onSubmitted;
final bool readOnly;
const AppTextField(
{Key key,
this.caption,
this.onSubmitted,
this.initialValue,
this.readOnly = false})
: super(key: key);
@override
_AppTextFieldState createState() => _AppTextFieldState();
}
class _AppTextFieldState extends State<AppTextField> {
TextEditingController _textEditingController;
TextStyle _captionStyle = TextStyle(fontSize: 17);
TextStyle _textStyle = TextStyle(fontSize: 17);
String get value => _textEditingController.text;
@override
void initState() {
super.initState();
this._textEditingController = TextEditingController();
this._textEditingController.text = this.widget.initialValue != null
? this.widget.initialValue.toString()
: "";
}
@override
Widget build(BuildContext context) {
return TextField(
textInputAction: TextInputAction.none,
readOnly: this.widget.readOnly,
enableInteractiveSelection: true,
cursorHeight: 30,
onEditingComplete: () {
int u = 9;
},
onChanged: (v) {
// if (this.widget.onSubmitted != null) {
// var val = this.widget.onSubmitted(v);
// if (val != null) this._textEditingController.text = val.toString();
// }
},
style: _textStyle,
controller: _textEditingController,
decoration: InputDecoration(
isDense: true,
contentPadding: EdgeInsets.all(15.0),
labelText: this.widget.caption,
floatingLabelBehavior: FloatingLabelBehavior.always,
border: OutlineInputBorder(
borderRadius: BorderRadius.circular(10),
borderSide: BorderSide(color: Colors.green, width: 1.0))),
);
}
@override
void dispose() {
this._textEditingController.dispose();
super.dispose();
}
}
//======the I use AppTextField widget inside AlertDialog like this :
import 'package:animate_do/animate_do.dart';
import 'package:flutter/material.dart';
import 'package:flutter_desktop/Views/App-Widgets/AppTextField.dart';
import 'package:flutter_desktop/Views/Room/Notification-Dialog.dart';
import 'package:flutter_desktop/Views/states/Message-State.dart';
import 'package:provider/provider.dart';
import 'Chat/ChatMessage.dart';
class SendNotificationDialog extends StatefulWidget {
@override
_SendNotificationDialogState createState() => _SendNotificationDialogState();
}
class _SendNotificationDialogState extends State<SendNotificationDialog> {
String _message = "";
@override
Widget build(BuildContext context) {
return AlertDialog(
elevation: 10,
titleTextStyle: TextStyle(
fontSize: 20, fontWeight: FontWeight.bold, color: Colors.black),
title: Text("رسالة تنبيه"),
content: Builder(
builder: (context) => _createBody(context),
),
actions: [
MaterialButton(
onPressed: () {
Navigator.pop(context);
var messageState =
Provider.of<MessageState>(context, listen: false);
messageState.addMessage(_message, MessageType.NOTIFICATION);
Navigator.push(
context,
PageRouteBuilder(
barrierDismissible: true,
opaque: false,
pageBuilder: (_, __, ___) => NotificationDialog(
userName: "Yousel : ",
notification: _message,
)));
},
child: Text("موافق"),
),
MaterialButton(
onPressed: () {
Navigator.pop(context);
},
child: Text("إلغاء"),
),
],
);
}
_createBody(BuildContext context) {
return Container(
width: 500,
height: 100,
child: ListTile(
autofocus: true,
title: AppTextField(
initialValue: _message,
onSubmitted: (v) {
_message = v;
return _message;
},
caption: "أدخل النص الذى سوف يشاهده الجميع",
),
),
);
}
}
//=======Then I push SendNotificationDialog page :
Navigator.push(
context,
PageRouteBuilder(
barrierDismissible: true,
opaque: false,
transitionDuration: Duration(milliseconds: 500),
transitionsBuilder:
(context, firstAnimation, secondAnimation, child) {
firstAnimation = CurvedAnimation(
parent: firstAnimation, curve: Curves.fastLinearToSlowEaseIn);
return ScaleTransition(
scale: firstAnimation,
child: child,
);
},
pageBuilder: (_, __, ___) {
return SendNotificationDialog();
}));