Flutter 常规对话框 - 设置状态不起作用
Flutter General dialog box - set state not working
我的常规对话框有问题。我想展示一颗星。然后我想在贴上星星时更改它的状态，并将图标替换为黄色星星。
但这是行不通的。对话框未刷新，因此图标未更改。拜托，你能看看下面的源代码并指出正确的方向吗？
非常感谢。
import 'package:flutter/material.dart';
import 'package:flutter/cupertino.dart';
import 'package:firebase_auth/firebase_auth.dart';
import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:date_time_picker/date_time_picker.dart';
import 'package:gtd_official_sharped_focused/snackbar.dart';
String _isImportantInboxTask ;
String _isUrgentInboxTask ;
String inboxTaskDisplayed;
String isImportant = "false" ;
String isUrgent = "false" ;
String myProjectName ;
var taskSelectedID;
//---------------
//String _initialValue;
//_-----------------
var documentID;
var textController = TextEditingController();
var popUpTextController = TextEditingController();
class Inbox extends StatefulWidget {
Inbox({Key key}) : super(key: key);
@override
_InboxState createState() => _InboxState();
}
class _InboxState extends State<Inbox> {
GlobalKey<FormState> _captureFormKey = GlobalKey<FormState>();
bool isOn = true;
@override
Widget build(BuildContext context) {
void showAddNote() {
TextEditingController _noteField = new TextEditingController();
showDialog(
context: context,
builder: (BuildContext context) {
return CustomAlertDialog(
content: Container(
width: MediaQuery.of(context).size.width / 1.3,
height: MediaQuery.of(context).size.height / 4,
child: Column(
children: [
TextField(
controller: _noteField,
maxLines: 4,
decoration: InputDecoration(
border: const OutlineInputBorder(
borderSide:
const BorderSide(color: Colors.black, width: 1.0),
),
),
),
SizedBox(height: 10),
Material(
elevation: 5.0,
borderRadius: BorderRadius.circular(25.0),
color: Colors.white,
child: MaterialButton(
minWidth: MediaQuery.of(context).size.width / 1.5,
onPressed: () {
Navigator.of(context).pop();
CollectionReference users = FirebaseFirestore.instance
.collection('Users')
.doc(FirebaseAuth.instance.currentUser.uid)
.collection('allTasks');
users
.add({'task_Name': _noteField.text,'task_Status': 'Inbox' })
.then((value) => print("User Document Added"))
.catchError((error) =>
print("Failed to add user: $error"));
},
padding: EdgeInsets.fromLTRB(10.0, 15.0, 10.0, 15.0),
child: Text(
'Add Note',
textAlign: TextAlign.center,
style: TextStyle(
fontSize: 20.0,
color: Colors.black,
fontWeight: FontWeight.bold,
),
),
),
),
],
),
),
);
});
}
return Scaffold(
appBar: new AppBar(
title: new Text('Inbox Page'),
actions: <Widget>[
IconButton(
icon: Icon(
Icons.add_circle_outline,
color: Colors.white,
),
onPressed: () {
showAddNote();
// do something
},
),
],
),
drawer: MyMenu(),
backgroundColor: Colors.white,
body: Column(
//mainAxisAlignment: MainAxisAlignment.center,
children: [
Container(
height: MediaQuery.of(context).size.height / 1.4,
width: MediaQuery.of(context).size.width,
child: StreamBuilder(
stream: FirebaseFirestore.instance
.collection('Users')
.doc(FirebaseAuth.instance.currentUser.uid)
.collection('allTasks')
.where('task_Status', isEqualTo: 'Inbox')
.snapshots(),
builder: (BuildContext context,
AsyncSnapshot<QuerySnapshot> snapshot) {
if (!snapshot.hasData) {
return Center(
child: CircularProgressIndicator(),
);
}
return ListView(
children: snapshot.data.docs.map((document) {
return Wrap(
children: [Card(
child: SwipeActionCell(
key: ObjectKey(document.data()['task_Name']),
actions: <SwipeAction>[
SwipeAction(
title: "delete",
onTap: (CompletionHandler handler) {
CollectionReference users = FirebaseFirestore
.instance
.collection('Users')
.doc(
FirebaseAuth.instance.currentUser.uid)
.collection('allTasks');
users
.doc(document.id)
.delete()
.then((value) => print("Note Deleted"))
.catchError((error) => print(
"Failed to delete Task: $error"));
},
color: Colors.red),
],
child: Padding(
padding: const EdgeInsets.all(0.0),
child: ListTile(
leading: ConstrainedBox(
constraints: BoxConstraints(
minWidth: leadingIconMinSize,
minHeight: leadingIconMinSize,
maxWidth: leadingIconMaxSize,
maxHeight: leadingIconMaxSize,
),
child: Image.asset('assets/icons/inbox.png'),
),
title: GestureDetector(
child: Text(
//'task_Name' correspond au nom du champ dans la table
document.data()['task_Name'],
maxLines: 2,
overflow: TextOverflow.ellipsis,
),
// Pour editer task
onDoubleTap: (){
taskSelectedID = FirebaseFirestore
.instance
.collection('Users')
.doc(
FirebaseAuth.instance.currentUser.uid)
.collection('allTasks')
.doc(document.id);
//Dialog
return showGeneralDialog(
context: context,
barrierDismissible: true,
barrierLabel: MaterialLocalizations.of(context)
.modalBarrierDismissLabel,
barrierColor: Colors.black45,
transitionDuration: const Duration(milliseconds: 20),
pageBuilder: (BuildContext buildContext,
Animation animation,
Animation secondaryAnimation) {
return Scaffold(
appBar: AppBar(
title: Text ('Edit Task'),
leading: InkWell(
child: Icon(Icons.close),
onTap:(){Navigator.of(context).pop();}
),
actions: [Padding(
padding: const EdgeInsets.fromLTRB(0, 0,16.0,0),
child: InkWell(
child: Icon(Icons.save),
onTap: () {
final loFormInbox = _captureFormKey
.currentState;
if (loFormInbox.validate()) {
loFormInbox.save();
CollectionReference users = FirebaseFirestore
.instance
.collection(
'Users')
.doc(FirebaseAuth
.instance
.currentUser.uid)
.collection(
'allTasks');
users
.add({
'task_Name': _valueTaskNameSaved,
})
.then((value) =>
print(
"Task Created"))
.catchError((
error) =>
print(
"Failed to add task: $error"));
showSimpleFlushbar(
context,
'Task Saved',
_valueTaskNameSaved,
Icons
.mode_comment);
loFormInbox.reset();
isImportant = 'false';
isUrgent = 'false';
}
}
),
)],
),
body: Center(
child: Container(
width: MediaQuery.of(context).size.width - 10,
height: MediaQuery.of(context).size.height - 80,
padding: EdgeInsets.all(20),
color: Colors.white,
child: Column(
children: [
Theme(
data: ThemeData(
inputDecorationTheme: InputDecorationTheme(
border: InputBorder.none,
)
),
child: Padding(
padding: const EdgeInsets.fromLTRB(8.0, 0.0, 15.0, 1.0),
child: TextFormField(
initialValue: document.data()['task_Name'],
decoration: InputDecoration(hintText: "Task Name"),
maxLength: 70,
maxLines: 2,
onChanged: (valProjectName) => setState(() => _valueTaskNameChanged = valProjectName),
validator: (valProjectName) {
setState(() => _valueTaskNameToValidate = valProjectName);
return valProjectName.isEmpty? "Task name cannot be empty" : null;
},
onSaved: (valProjectName) => setState(() => _valueTaskNameSaved = valProjectName),
),
)),
//Test Energy et Time / Important /urgent
Material(
child:
Container(
// color: Colors.red,
alignment: Alignment.center,
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
children:[
//Important
FlatButton(
child:
InkWell(
child: Container(
// color: Colors.white,
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
isImportant =="true" ? Icon(Icons.star,color: Colors.orange,) :
Icon(Icons.star_border, color: Colors.grey,),
// Icon(Icons.battery_charging_full),
Text('Important'),
],
)
),
onTap: () {
setState(() {
if (isImportant=='true'){
isImportant = 'false';}
else
{isImportant= 'true';
}
});
},
),
),
RaisedButton(
onPressed: () {
Navigator.of(context).pop();
},
child: Text(
"Close",
style: TextStyle(color: Colors.white),
),
color: const Color(0xFF1BC0C5),
)
//++++++++++++++++
],
),
),
),
);
});
},
),
),
),
),
),
),
]
);
}).toList(),
);
}),
),
],
),
bottomNavigationBar: MyBottomAppBar(), //PersistentBottomNavBar(),
);
}
}
@override
Widget build(BuildContext context){
return _widget();
}
}
感谢您的解决方案，我能够做我想做的事。但是现在，我有另一个问题。在我的代码版本 1 中，我使用的是这段代码
Theme(
data: ThemeData(
inputDecorationTheme: InputDecorationTheme(
border: InputBorder.none,
)
),
child: Padding(
padding: const EdgeInsets.fromLTRB(8.0, 0.0, 15.0, 1.0),
child: TextFormField(
initialValue: document.data()['task_Name'],
decoration: InputDecoration(hintText: "Task Name"),
maxLength: 70,
maxLines: 2,
onChanged: (valProjectName) => setState(() => _valueTaskNameChanged = valProjectName),
validator: (valProjectName) {
setState(() => _valueTaskNameToValidate = valProjectName);
return valProjectName.isEmpty? "Task name cannot be empty" : null;
},
onSaved: (valProjectName) => setState(() => _valueTaskNameSaved = valProjectName),
),
)),
这部分效果很好。但是在修改之后，我得到了一个错误。错误与文档有关。
未定义的名称'document'。尝试将名称更正为已定义的名称，或定义名称。
拜托，你能帮助我完成这个页面吗？谢谢
我会建议你使用这个包，它很棒
flutter_rating_bar
如果这不能满足您的需求，请随时发表评论
所以你想改变对话框中点击图标的颜色，
但不幸的是，您在 showGeneralDialog builder 的 return 中使用无状态小部件 Scaffold，所以可能有帮助的一件事是制作一个单独的 StateFull Widget RatingDialogBox 并在生成器中使用它。
您还可以使用 IconButton
而不是 InkWell
我的常规对话框有问题。我想展示一颗星。然后我想在贴上星星时更改它的状态，并将图标替换为黄色星星。 但这是行不通的。对话框未刷新，因此图标未更改。拜托，你能看看下面的源代码并指出正确的方向吗？ 非常感谢。
import 'package:flutter/material.dart';
import 'package:flutter/cupertino.dart';
import 'package:firebase_auth/firebase_auth.dart';
import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:date_time_picker/date_time_picker.dart';
import 'package:gtd_official_sharped_focused/snackbar.dart';
String _isImportantInboxTask ;
String _isUrgentInboxTask ;
String inboxTaskDisplayed;
String isImportant = "false" ;
String isUrgent = "false" ;
String myProjectName ;
var taskSelectedID;
//---------------
//String _initialValue;
//_-----------------
var documentID;
var textController = TextEditingController();
var popUpTextController = TextEditingController();
class Inbox extends StatefulWidget {
Inbox({Key key}) : super(key: key);
@override
_InboxState createState() => _InboxState();
}
class _InboxState extends State<Inbox> {
GlobalKey<FormState> _captureFormKey = GlobalKey<FormState>();
bool isOn = true;
@override
Widget build(BuildContext context) {
void showAddNote() {
TextEditingController _noteField = new TextEditingController();
showDialog(
context: context,
builder: (BuildContext context) {
return CustomAlertDialog(
content: Container(
width: MediaQuery.of(context).size.width / 1.3,
height: MediaQuery.of(context).size.height / 4,
child: Column(
children: [
TextField(
controller: _noteField,
maxLines: 4,
decoration: InputDecoration(
border: const OutlineInputBorder(
borderSide:
const BorderSide(color: Colors.black, width: 1.0),
),
),
),
SizedBox(height: 10),
Material(
elevation: 5.0,
borderRadius: BorderRadius.circular(25.0),
color: Colors.white,
child: MaterialButton(
minWidth: MediaQuery.of(context).size.width / 1.5,
onPressed: () {
Navigator.of(context).pop();
CollectionReference users = FirebaseFirestore.instance
.collection('Users')
.doc(FirebaseAuth.instance.currentUser.uid)
.collection('allTasks');
users
.add({'task_Name': _noteField.text,'task_Status': 'Inbox' })
.then((value) => print("User Document Added"))
.catchError((error) =>
print("Failed to add user: $error"));
},
padding: EdgeInsets.fromLTRB(10.0, 15.0, 10.0, 15.0),
child: Text(
'Add Note',
textAlign: TextAlign.center,
style: TextStyle(
fontSize: 20.0,
color: Colors.black,
fontWeight: FontWeight.bold,
),
),
),
),
],
),
),
);
});
}
return Scaffold(
appBar: new AppBar(
title: new Text('Inbox Page'),
actions: <Widget>[
IconButton(
icon: Icon(
Icons.add_circle_outline,
color: Colors.white,
),
onPressed: () {
showAddNote();
// do something
},
),
],
),
drawer: MyMenu(),
backgroundColor: Colors.white,
body: Column(
//mainAxisAlignment: MainAxisAlignment.center,
children: [
Container(
height: MediaQuery.of(context).size.height / 1.4,
width: MediaQuery.of(context).size.width,
child: StreamBuilder(
stream: FirebaseFirestore.instance
.collection('Users')
.doc(FirebaseAuth.instance.currentUser.uid)
.collection('allTasks')
.where('task_Status', isEqualTo: 'Inbox')
.snapshots(),
builder: (BuildContext context,
AsyncSnapshot<QuerySnapshot> snapshot) {
if (!snapshot.hasData) {
return Center(
child: CircularProgressIndicator(),
);
}
return ListView(
children: snapshot.data.docs.map((document) {
return Wrap(
children: [Card(
child: SwipeActionCell(
key: ObjectKey(document.data()['task_Name']),
actions: <SwipeAction>[
SwipeAction(
title: "delete",
onTap: (CompletionHandler handler) {
CollectionReference users = FirebaseFirestore
.instance
.collection('Users')
.doc(
FirebaseAuth.instance.currentUser.uid)
.collection('allTasks');
users
.doc(document.id)
.delete()
.then((value) => print("Note Deleted"))
.catchError((error) => print(
"Failed to delete Task: $error"));
},
color: Colors.red),
],
child: Padding(
padding: const EdgeInsets.all(0.0),
child: ListTile(
leading: ConstrainedBox(
constraints: BoxConstraints(
minWidth: leadingIconMinSize,
minHeight: leadingIconMinSize,
maxWidth: leadingIconMaxSize,
maxHeight: leadingIconMaxSize,
),
child: Image.asset('assets/icons/inbox.png'),
),
title: GestureDetector(
child: Text(
//'task_Name' correspond au nom du champ dans la table
document.data()['task_Name'],
maxLines: 2,
overflow: TextOverflow.ellipsis,
),
// Pour editer task
onDoubleTap: (){
taskSelectedID = FirebaseFirestore
.instance
.collection('Users')
.doc(
FirebaseAuth.instance.currentUser.uid)
.collection('allTasks')
.doc(document.id);
//Dialog
return showGeneralDialog(
context: context,
barrierDismissible: true,
barrierLabel: MaterialLocalizations.of(context)
.modalBarrierDismissLabel,
barrierColor: Colors.black45,
transitionDuration: const Duration(milliseconds: 20),
pageBuilder: (BuildContext buildContext,
Animation animation,
Animation secondaryAnimation) {
return Scaffold(
appBar: AppBar(
title: Text ('Edit Task'),
leading: InkWell(
child: Icon(Icons.close),
onTap:(){Navigator.of(context).pop();}
),
actions: [Padding(
padding: const EdgeInsets.fromLTRB(0, 0,16.0,0),
child: InkWell(
child: Icon(Icons.save),
onTap: () {
final loFormInbox = _captureFormKey
.currentState;
if (loFormInbox.validate()) {
loFormInbox.save();
CollectionReference users = FirebaseFirestore
.instance
.collection(
'Users')
.doc(FirebaseAuth
.instance
.currentUser.uid)
.collection(
'allTasks');
users
.add({
'task_Name': _valueTaskNameSaved,
})
.then((value) =>
print(
"Task Created"))
.catchError((
error) =>
print(
"Failed to add task: $error"));
showSimpleFlushbar(
context,
'Task Saved',
_valueTaskNameSaved,
Icons
.mode_comment);
loFormInbox.reset();
isImportant = 'false';
isUrgent = 'false';
}
}
),
)],
),
body: Center(
child: Container(
width: MediaQuery.of(context).size.width - 10,
height: MediaQuery.of(context).size.height - 80,
padding: EdgeInsets.all(20),
color: Colors.white,
child: Column(
children: [
Theme(
data: ThemeData(
inputDecorationTheme: InputDecorationTheme(
border: InputBorder.none,
)
),
child: Padding(
padding: const EdgeInsets.fromLTRB(8.0, 0.0, 15.0, 1.0),
child: TextFormField(
initialValue: document.data()['task_Name'],
decoration: InputDecoration(hintText: "Task Name"),
maxLength: 70,
maxLines: 2,
onChanged: (valProjectName) => setState(() => _valueTaskNameChanged = valProjectName),
validator: (valProjectName) {
setState(() => _valueTaskNameToValidate = valProjectName);
return valProjectName.isEmpty? "Task name cannot be empty" : null;
},
onSaved: (valProjectName) => setState(() => _valueTaskNameSaved = valProjectName),
),
)),
//Test Energy et Time / Important /urgent
Material(
child:
Container(
// color: Colors.red,
alignment: Alignment.center,
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
children:[
//Important
FlatButton(
child:
InkWell(
child: Container(
// color: Colors.white,
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
isImportant =="true" ? Icon(Icons.star,color: Colors.orange,) :
Icon(Icons.star_border, color: Colors.grey,),
// Icon(Icons.battery_charging_full),
Text('Important'),
],
)
),
onTap: () {
setState(() {
if (isImportant=='true'){
isImportant = 'false';}
else
{isImportant= 'true';
}
});
},
),
),
RaisedButton(
onPressed: () {
Navigator.of(context).pop();
},
child: Text(
"Close",
style: TextStyle(color: Colors.white),
),
color: const Color(0xFF1BC0C5),
)
//++++++++++++++++
],
),
),
),
);
});
},
),
),
),
),
),
),
]
);
}).toList(),
);
}),
),
],
),
bottomNavigationBar: MyBottomAppBar(), //PersistentBottomNavBar(),
);
}
}
@override
Widget build(BuildContext context){
return _widget();
}
}
感谢您的解决方案，我能够做我想做的事。但是现在，我有另一个问题。在我的代码版本 1 中，我使用的是这段代码
Theme(
data: ThemeData(
inputDecorationTheme: InputDecorationTheme(
border: InputBorder.none,
)
),
child: Padding(
padding: const EdgeInsets.fromLTRB(8.0, 0.0, 15.0, 1.0),
child: TextFormField(
initialValue: document.data()['task_Name'],
decoration: InputDecoration(hintText: "Task Name"),
maxLength: 70,
maxLines: 2,
onChanged: (valProjectName) => setState(() => _valueTaskNameChanged = valProjectName),
validator: (valProjectName) {
setState(() => _valueTaskNameToValidate = valProjectName);
return valProjectName.isEmpty? "Task name cannot be empty" : null;
},
onSaved: (valProjectName) => setState(() => _valueTaskNameSaved = valProjectName),
),
)),
这部分效果很好。但是在修改之后，我得到了一个错误。错误与文档有关。
未定义的名称'document'。尝试将名称更正为已定义的名称，或定义名称。
拜托，你能帮助我完成这个页面吗？谢谢
我会建议你使用这个包，它很棒 flutter_rating_bar
如果这不能满足您的需求，请随时发表评论
所以你想改变对话框中点击图标的颜色，
但不幸的是，您在 showGeneralDialog builder 的 return 中使用无状态小部件 Scaffold，所以可能有帮助的一件事是制作一个单独的 StateFull Widget RatingDialogBox 并在生成器中使用它。
您还可以使用 IconButton
InkWell