rest api flutter get method works while post doesnt

rest api flutter get method works while post doesnt - android

ihave this error from server response
this is the models and api
u can find full source code here https://github.com/alihassan75/project
// To parse this JSON data, do
//
// final task = taskFromJson(jsonString);
import 'dart:collection';
import 'dart:core';
import 'package:flutter/foundation.dart';
import 'dart:convert';
import 'package:flutter/material.dart';
import 'package:http/http.dart' as http;
//List<Task> taskFromJson(String str) => List<Task>.from(json.decode(str).map((x) => Task.fromJson(x)));
//String taskToJson(List<Task> data) => json.encode(List<dynamic>.from(data.map((x) => x.toJson())));
class Project {
Project({
this.id,
required this.project_name,
this.created_at,
// required this.start_date,
//required this.end_date,
required this.user,
});
int? id;
final String? project_name;
DateTime? created_at;
// final DateTime? start_date;
//final DateTime? end_date;
int user;
factory Project.fromJson(Map<String, dynamic> json) => Project(
id: json["id"],
project_name: json["project_name"],
created_at: DateTime.parse(json["created_at"]),
// start_date: DateTime.parse(json["start_date"]),
//end_date: DateTime.parse(json["end_date"]),
user: json["user"],
);
Map<String, dynamic> toJson() => {
"id": id,
"project_name": project_name,
"created_at": created_at?.toIso8601String(),
// "start_date": start_date?.toIso8601String(),
//"end_date": end_date?.toIso8601String(),
"user": user,
};
}
class ProjectProvider with ChangeNotifier{
ProjectProvider(){
this.fetchProject();
}
List<Project> _project = [];
List<Project> get project {
return [..._project];
}
void addProject(Project project) async {
final response = await http.post(Uri.parse('http://mostafahamed.pythonanywhere.com/project/api'),
headers: {"Content-Type": "application/json"}, body: json.encode(project));
if (response.statusCode == 201) {
project.id = json.decode(response.body)['id'];
_project.add(project);
notifyListeners();
print('sucess');
}
else {
print(response.body);
throw Exception('Failed to add project');
}
}
void deleteProject(Project project) async {
final response =
await http.delete(Uri.parse('http://mostafahamed.pythonanywhere.com/project/api${project.id}/'));
if (response.statusCode == 204) {
_project.remove(project);
notifyListeners();
print('sucess');
}
else {
throw Exception('Failed to load tasks');
}
}
fetchProject() async{
final response = await http
.get(Uri.parse('http://mostafahamed.pythonanywhere.com/project/api?format=json'));
if (response.statusCode==200){
var data = json.decode(response.body)as List;
_project=data.map<Project>((json) => Project.fromJson(json)).toList();
notifyListeners();
print('sucess');
}
else {
// If the server did not return a 200 OK response,
// then throw an exception.
throw Exception('Failed to load projects');
}
}
}
here i call back the post method with adding data function
import 'package:flutter/material.dart';
import 'package:intl/intl.dart';
import 'package:project/model/project_model.dart';
//import 'package:intl/intl.dart';
import 'package:provider/provider.dart';
import 'package:project/model/user_Model.dart';
import 'home_page02.dart';
class NewProject extends StatefulWidget {
const NewProject({Key? key}) : super(key: key);
#override
State<NewProject> createState() => _NewProjectState();
}
class _NewProjectState extends State<NewProject> {
final TextEditingController projectname = TextEditingController();
//TextEditingController datelController = TextEditingController();
//DateTime _selectedDate = DateTime.now();
//DateTime currentDate = DateTime.now();
// Future<void> _selectDate(BuildContext context) async {
// final DateTime? pickedDate = await showDatePicker(
// context: context,
// initialDate: currentDate,
// firstDate: DateTime(2015),
// lastDate: DateTime(2050));
// if (pickedDate != null && pickedDate != currentDate)
// setState(() {
// currentDate = pickedDate;
// });
// else print('empty')
// ;}
void onAdd() {
//final DateTime? textVal = DateTime.parse(datelController.text);
final String desVal = projectname.text;
if (/*textVal != null&&*/ desVal.isNotEmpty) {
final Project project = Project(/*end_date: textVal,*/ project_name: desVal, user: 1, /*start_date: null,*/ );
Provider.of<ProjectProvider>(context, listen: false).addProject(project);
print('$desVal in sucess');
}
else{
print('empty or vaild');
//print('$textVal in vaild');
}
}
#override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: Colors.white,
// App Bar The upper part in the application
appBar: AppBar(
backgroundColor:const Color(0xff076792),
title: const Padding(
padding: EdgeInsets.only(
left: 50.0,
),
// project Name
child: Text(
'New Project',
style: TextStyle(
color: Colors.white,
fontWeight: FontWeight.bold,
fontSize: 25.0,
shadows: [
Shadow(
color: Color(0xa6A2B6D4),
offset: Offset(7,5),
blurRadius:20),
]
),
),
),
iconTheme: const IconThemeData(
color:Colors.white,
size: 30.0,
),
),
body: SingleChildScrollView(
child: Column(
children: [
const Padding(
padding: EdgeInsets.only(
left: 10.0,
top: 30.0,
),
child: Padding(
padding: EdgeInsets.only(right: 80.0),
child: Text(
'Creating New Project',
style: TextStyle(
fontSize: 25.0,
color: Color(0xff076792),
fontWeight: FontWeight.bold,
),
),
),
),
Container(
margin: const EdgeInsets.fromLTRB(43, 24, 43, 15),
child: SizedBox(
height: 45,
child: TextField(
controller: projectname,
decoration: const InputDecoration(
hintText: "Enter project Name", //اليوسر يدخل اسم المشروع
hintStyle: TextStyle(
fontSize: 20,
color: Color(0xffc9c9c9), /*height: 2.5*/
),
enabledBorder: OutlineInputBorder(
borderSide:
BorderSide(width: 2, color: Color(0xFF09679a))),
),
keyboardType: TextInputType.name,
),
),
),
// Container(
// margin: const EdgeInsets.fromLTRB(43, 0, 43, 20),
// child: SizedBox(
// height: 45,
// child: TextField(
// controller: datelController,
// onTap: () {
// showDatePicker(
// context: context,
// initialDate: DateTime.now(),
// firstDate: DateTime.now(),
// lastDate: DateTime(2050),
// ).then((value) {
// datelController.text = DateFormat("yyyy-MM-dd").format(value!);
// });
// },
// decoration: const InputDecoration(
// hintText: "End Date",
// hintStyle: TextStyle(
// fontSize: 20,
// color: Color(0xffc9c9c9),
// ),
// enabledBorder: OutlineInputBorder(
// borderSide: BorderSide(width: 2, color: Color(0xFF09679a))),
// ),
// keyboardType: TextInputType.datetime,
// ),
// ),
// ),
const SizedBox(
height: 10.0,
),
Container(
width: double.infinity,
height: 54,
margin: const EdgeInsets.fromLTRB(75, 0, 75, 0),
child: ElevatedButton(
onPressed: () {
onAdd();
//_selectDate(context);
//Navigator.of(context).pop();
},
child: const Text(
'Create',
style: TextStyle(fontSize: 26, fontWeight: FontWeight.w400),
),
style: ElevatedButton.styleFrom(
primary: const Color(0xFF09679a),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(30),
// f... flutter buttons!
side: const BorderSide(color: Colors.black, width: 1),
)),
),
),
Container(
alignment: Alignment.center,
child: const Padding(
padding: EdgeInsets.only(left: 60, top: 15.0, right: 60.0),
child: Text(
'By Creating This Project You Will Be Admin Of The Project',
style: TextStyle(
fontSize: 18.0,
fontStyle: FontStyle.italic,
color: Colors.black,
),
),
), //just text
),
// Text(currentDate.toString()),
// ElevatedButton(
// onPressed: () => _selectDate(context),
// child: Text('Select date'),
// ),
],
),
),
);
}
}
this app made to login users and view projects and add projects like todo app on the django server i can add project and view projects regstring with admin mail from python backend server .. in this app i can only view projects but cant add new project its my project for graduation so my life depends on this :D
full source code https://github.com/alihassan75/project

You are not getting the data "user" because you are not saving the "user" after login.
You need to save the user in any local storage. For, the demo purpose I will be saving that on HIVE
Import the hive package in pubspec.yaml
hive: ^2.1.0
In the main function(before run app) initialize and open a box "user"
await Hive.initFlutter();
await Hive.openBox('User');
You can push to user box in login function like this.
box = Hive.box('User');
int userId = responseJson['user']['id'];
box.put('user_id', userId);
You can read the user when ever you want like this.
late Box box;
late int userid;
box = Hive.box('User');
super.initState();
final data = box.get('user_id');
Now you can pass the data to the http api call.
Thank you

Related

Error Update FirebaseFirestore Flutter. error: a document path must be a non-empty string 'package:cloud_firestore/src/collection_reference.dart':

So I made a CRUD app with Firebase Firestore in Flutter. I have this error where it says
Exception caught by gesture
═══════════════════════
a document path must be a non-empty string
'package:cloud_firestore/src/collection_reference.dart':
package:cloud_firestore/src/collection_reference.dart:1
Failed assertion: line 116 pos 14: 'path.isNotEmpty'
I build this app with various tutorial videos in Youtube. I can make the Create, Read, and Delete features but I face this problem with Update features. Here's the code ...or check this Github https://github.com/rayhanyovi/Dapurku
import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:firebase_core/firebase_core.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:intl/intl.dart';
import 'package:dapurkuu/warna.dart';
import 'package:dapurkuu/widget.dart';
Future main() async {
WidgetsFlutterBinding.ensureInitialized();
await Firebase.initializeApp();
runApp(MyApp());
}
//=====================================
const Color Red = Color(0xFFDA4040);
const Color Blue = Color(0xFF5F52EE);
const Color Black = Color(0xFF3A3A3A);
const Color Grey = Color(0xFF717171);
const Color BGColor = Color(0xFFEEEFF5);
final controllerName = TextEditingController();
final controllerAge = TextEditingController();
final controllerBirthday = TextEditingController();
final updateName = TextEditingController();
final updateAge = TextEditingController();
final updateBirthday = TextEditingController();
//=====================================
class User {
String id;
final String name;
final int age;
final DateTime birthday;
User({
this.id = '',
required this.name,
required this.age,
required this.birthday,
});
Map<String, dynamic> toJson() => {
'id': id,
'name': name,
'age': age,
'birthday': birthday,
};
static User fromJson(Map<String, dynamic> json) => User(
id: json['id'],
name: json['name'],
age: json['age'],
birthday: (json['birthday'] as Timestamp).toDate(),
);
}
//=====================================
class MyApp extends StatelessWidget {
const MyApp({Key? key}) : super(key: key);
#override
Widget build(BuildContext context) {
SystemChrome.setSystemUIOverlayStyle(
SystemUiOverlayStyle(statusBarColor: Colors.transparent));
return MaterialApp(
debugShowCheckedModeBanner: false,
title: "Test",
home: Home(),
);
}
}
//=====================================
class Home extends StatefulWidget {
#override
_HomeState createState() => _HomeState();
}
class _HomeState extends State<Home> {
final CollectionReference _users =
FirebaseFirestore.instance.collection('users');
#override
Widget build(BuildContext context) {
Future createUser(User user) async {
final docUser = FirebaseFirestore.instance.collection('users').doc();
user.id = docUser.id;
final json = user.toJson();
await docUser.set(json);
Future updateUser(User user) async {
final docUser = FirebaseFirestore.instance.collection('users').doc();
user.id = docUser.id;
final json = user.toJson();
await docUser.update(json);
}
}
Widget buildUser(User user) {
return Container(
margin: EdgeInsets.only(
right: 20,
left: 20,
bottom: 15,
),
child: Material(
child: ListTile(
onTap: () {
print("card");
},
contentPadding:
EdgeInsets.only(top: 10, bottom: 10, left: 20, right: 15),
shape:
RoundedRectangleBorder(borderRadius: BorderRadius.circular(20)),
tileColor: Colors.white,
title: Padding(
padding: const EdgeInsets.only(bottom: 5),
child: Text(
user.name,
style: TextStyle(
fontSize: 18,
fontWeight: FontWeight.w600,
),
),
),
subtitle: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
'Jumlah: ${user.age}',
),
Text(
'Kadaluarsa: ${DateFormat('dd MMMM yyyy').format(user.birthday)}')
],
),
trailing: Wrap(spacing: 0, children: [
IconButton(
icon: Icon(Icons.edit),
iconSize: 24,
color: Colors.black,
onPressed: () async {
await Edit(context, createUser);
},
),
IconButton(
icon: Icon(Icons.delete),
iconSize: 24,
color: Colors.red,
onPressed: () {
final docUser = FirebaseFirestore.instance
.collection('users')
.doc(user.id);
docUser.delete();
},
),
]),
),
),
);
}
return Scaffold(
backgroundColor: BGColor,
appBar: _AppBar(),
body: Column(
children: [
/* JUDUL */
Column(
children: [
Container(
margin: EdgeInsets.only(left: 20),
alignment: Alignment.centerLeft,
child: SearchBox()),
Container(
margin: EdgeInsets.only(left: 20),
alignment: Alignment.centerLeft,
child: Text(
'Bahan Dapurmu',
style: TextStyle(
fontSize: 28,
fontWeight: FontWeight.bold,
color: Black,
),
),
)
],
),
/* STREAM BUILDER */
StreamBuilder(
stream: readUsers(),
builder: (context, snapshot) {
if (snapshot.hasData) {
final users = snapshot.data!;
return Expanded(
child: ListView(
scrollDirection: Axis.vertical,
shrinkWrap: true,
children: users.map(buildUser).toList(),
),
);
} else if (snapshot.hasError) {
return Container(
child: Text("data kosong"),
);
} else {
return Center(
child: CircularProgressIndicator(),
);
}
}),
],
),
floatingActionButton: FloatingActionButton(
onPressed: () async {
await Create(context, createUser);
},
child: Icon(Icons.add),
),
);
}
Edit(BuildContext context, Future<dynamic> updateUser(User user)) async {
showDialog(
context: context,
builder: (BuildContext context) {
return AlertDialog(
title: Text("Tambahkan bahan"),
content: Column(
children: [
TextField(
decoration: const InputDecoration(
labelText: 'Nama',
),
controller: updateName,
),
TextField(
decoration: const InputDecoration(
labelText: 'Umur',
),
controller: updateAge,
keyboardType: TextInputType.number,
),
TextField(
controller: updateBirthday,
//editing controller of this TextField
decoration: InputDecoration(
labelText: "Enter Date" //label text of field
),
readOnly: true,
//set it true, so that user will not able to edit text
onTap: () async {
DateTime? pickedDate = await showDatePicker(
context: context,
initialDate: DateTime.now(),
firstDate: DateTime(1950),
//DateTime.now() - not to allow to choose before today.
lastDate: DateTime(2100));
if (pickedDate != null) {
print(
pickedDate);
//pickedDate output format => 2021-03-10 00:00:00.000
//formatted date output using intl package => 2021-03-16
setState(() {
updateBirthday.text = pickedDate
.toString(); //set output date to TextField value.
});
} else {}
},
),
],
),
actions: <Widget>[
MaterialButton(
elevation: 5.0,
child: Text("Ubah Data"),
onPressed: () {
final user = User(
name: updateName.text,
age: int.parse(updateAge.text),
birthday: DateTime.parse(updateBirthday.text),
);
final docUser = FirebaseFirestore.instance
.collection('users')
.doc(user.id);
updateUser(user);
}),
],
);
});
}
Create(BuildContext context, Future<dynamic> createUser(User user)) async {
showDialog(
context: context,
builder: (BuildContext context) {
return AlertDialog(
title: Text("Tambahkan bahan"),
content: Column(
children: [
TextField(
decoration: const InputDecoration(
labelText: 'Nama',
),
controller: controllerName,
),
TextField(
decoration: const InputDecoration(
labelText: 'Umur',
),
controller: controllerAge,
keyboardType: TextInputType.number,
),
TextField(
controller: controllerBirthday,
//editing controller of this TextField
decoration: InputDecoration(
labelText: "Enter Date" //label text of field
),
readOnly: true,
//set it true, so that user will not able to edit text
onTap: () async {
DateTime? pickedDate = await showDatePicker(
context: context,
initialDate: DateTime.now(),
firstDate: DateTime(1950),
//DateTime.now() - not to allow to choose before today.
lastDate: DateTime(2100));
if (pickedDate != null) {
print(
pickedDate);
//pickedDate output format => 2021-03-10 00:00:00.000
//formatted date output using intl package => 2021-03-16
setState(() {
controllerBirthday.text = pickedDate
.toString(); //set output date to TextField value.
});
} else {}
},
),
],
),
actions: <Widget>[
MaterialButton(
elevation: 5.0,
child: Text("Tambahkan"),
onPressed: () {
final user = User(
name: controllerName.text,
age: int.parse(controllerAge.text),
birthday: DateTime.parse(controllerBirthday.text),
);
createUser(user);
}),
],
);
});
}
Stream<List<User>> readUsers() => FirebaseFirestore.instance
.collection('users')
.snapshots()
.map((snapshot) =>
snapshot.docs.map((doc) => User.fromJson(doc.data())).toList());
}
//=====================================
AppBar _AppBar() {
return AppBar(
elevation: 0,
backgroundColor: BGColor,
title: Center(
child: Text(
"Dapurku",
style: TextStyle(
fontSize: 20,
fontWeight: FontWeight.bold,
color: Black,
),
),
),
);
}
//=====================================
class UpdateButton extends StatelessWidget {
const UpdateButton({Key? key}) : super(key: key);
#override
Widget build(BuildContext context) {
return Container(
child: IconButton(
icon: Icon(Icons.edit),
iconSize: 24,
color: Colors.black,
onPressed: () {},
),
);
}
}
//=====================================
class SearchBox extends StatelessWidget {
const SearchBox({
Key? key,
}) : super(key: key);
#override
Widget build(BuildContext context) {
return Container(
padding: const EdgeInsets.only(left: 10),
child: const TextField(
decoration: InputDecoration(
contentPadding: EdgeInsets.all(0),
prefixIcon: Icon(
Icons.search,
color: Black,
size: 20,
),
prefixIconConstraints: BoxConstraints(
maxHeight: 20,
minWidth: 25,
),
border: InputBorder.none,
hintText: "Cari Bahan...",
hintStyle: TextStyle(
color: Grey,
)),
),
decoration: BoxDecoration(
color: Colors.white,
borderRadius: BorderRadius.circular(20),
),
);
}
}
Can you tell me what I did wrong or help me solve the problem? I've been looking for it anywhere and solving this problem for days. It is for my school assignment :/

How to get URL from imgur response data?

I have a code like this:
import 'dart:convert';
import 'dart:developer';
import 'package:flutter/material.dart';
import 'package:file_picker/file_picker.dart';
import 'package:flutter/services.dart';
import 'dart:io';
import 'package:http/http.dart' as http;
class HomePage extends StatefulWidget {
const HomePage({Key? key}) : super(key: key);
#override
State<HomePage> createState() => _HomePageState();
}
final link = "";
var result;
TextEditingController _linkController = TextEditingController(text: link);
class _HomePageState extends State<HomePage> {
#override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: Color.fromARGB(255, 40, 40, 40),
appBar: AppBar(
title: const Text('Image Upload'),
centerTitle: true,
backgroundColor: Color.fromARGB(255, 24, 24, 24),
elevation: 0,
),
body: Column(
children: [
SizedBox(height: 20),
Padding(
padding: const EdgeInsets.all(4.0),
child: Center(
child: Text("Click button with upload image.", style: TextStyle(color: Colors.white, fontSize: 20), textAlign: TextAlign.center,)
),
),
SizedBox(height: 20),
Container(
width: MediaQuery.of(context).size.width - 100,
height: 50,
child: ElevatedButton(
style: ElevatedButton.styleFrom(
backgroundColor: Color.fromARGB(255, 16, 16, 16),
padding: EdgeInsets.symmetric(horizontal: 20, vertical: 10),
),
onPressed: () async {
FilePickerResult? result = await FilePicker.platform.pickFiles();
File file = File(result!.files.single.path as String);
if (result != null) {
uploadImage(context, "name", file);
setState(() {
_linkController.text = link;
});
inspect(_linkController.text);
} else {
print('No file selected');
}
},
child: const Text('Select Image', style: TextStyle(color: Colors.white, fontSize: 20),),
),
),
SizedBox(height: 20),
Text("Image link:", style: TextStyle(color: Colors.white, fontSize: 18), textAlign: TextAlign.center),
SizedBox(height: 20),
Text(result ?? "Not selected. Upload image please.", style: TextStyle(color: Colors.white, fontSize: 18), textAlign: TextAlign.center),
],
),
);
}
uploadImage(context, String title, File file) async {
var request = http.MultipartRequest("POST", Uri.parse("https://api.imgur.com/3/image"));
request.fields["title"] = "Dummy";
request.headers["Authorization"] = "CLIENT-ID SECURE";
var picture = await http.MultipartFile.fromPath("image", file.path);
request.files.add(picture);
var response = await request.send().catchError((e) {
AlertDialog alertDialog = AlertDialog(
title: Text("Error"),
content: Text("Error"),
actions: <Widget>[
TextButton(
child: Text("Ok"),
onPressed: () {
Navigator.pop(context);
},
),
],
);
showDialog(context: context, builder: (BuildContext context) => alertDialog);
});
var responseData = await response.stream.toBytes();
var responseDataString = String.fromCharCodes(responseData);
/*
{"data":{"id":"Y1eohd2","title":"Dummy","description":null,"datetime":1658939127,"type":"image\/png","animated":false,
"width":800,"height":600,"size":226933,"views":0,"bandwidth":0,"vote":null,"favorite":false,"nsfw":null,"section":null,
"account_url":null,"account_id":0,"is_ad":false,"in_most_viral":false,"has_sound":false,"tags":[],"ad_type":0,"ad_url":"",
"edited":"0","in_gallery":false,"deletehash":"EJFowg2kurhYlxA","name":"","link":"https:\/\/i.imgur.com\/Y1eohd2.png"},
"success":true,"status":200}
*/
print(responseDataString);
}
}
My goal is to select a photo by pressing the "Select Image" button from the application and upload it to imgur. There is no problem here. The image selected by the user is loaded. After uploading, I get responseData from imgur.
My goal is this: I could not get the URL from this return. I tried decoding with JSON or something, but I couldn't do it. I would be glad if you help.
Thanks in advance for your help.

streamBuilder flutter doesn't display data

im using streamBuilder to rebuild my screen depend on the project_id selected by taping on the project widget i send project_id to the next screen with constructer the streamBuilder read that constructor well but doesnt display that fetched from the http response from django endpoint
here the model and api
// To parse this JSON data, do
//
// final task = taskFromJson(jsonString);
import 'dart:collection';
import 'dart:core';
import 'package:flutter/foundation.dart';
import 'dart:convert';
import 'package:flutter/material.dart';
import 'package:http/http.dart' as http;
import 'package:project/model/project_model.dart';
import 'package:project/tasksById.dart';
import 'dart:async';
import 'package:shared_preferences/shared_preferences.dart';
//List<Task> taskFromJson(String str) => List<Task>.from(json.decode(str).map((x) => Task.fromJson(x)));
//String taskToJson(List<Task> data) => json.encode(List<dynamic>.from(data.map((x) => x.toJson())));
class Task {
String? url;
int? id;
String? owner;
String? project;
String? title;
DateTime? start;
DateTime? end;
String? desc;
int? project_id;
Task(
{this.url,
this.id,
this.owner,
this.project,
this.title,
this.start,
this.end,
this.desc,
this.project_id});
factory Task.fromJson(Map<String, dynamic> json) => Task(
url :json["url"],
id: json["id"],
owner: json["owner"],
project: json["project"],
title: json["title"],
start: DateTime.parse(json["start"]),
end: DateTime.parse(json["end"]),
desc: json["desc"],
project_id: json["project_id"],
);
Map<String, dynamic> toJson() => {
"url": url,
"id": id,
"owner": owner,
"project": project,
"title": title,
"start": start?.toIso8601String(),
"end": end?.toIso8601String(),
"desc": desc,
"project_id": project_id,
};
}
class SharedProojectId {
Future<Future<bool>> setid(int? newId) async {
final SharedPreferences prefs = await SharedPreferences.getInstance();
return prefs.setInt("project_id", newId!);
}
Future<int> getid() async {
final SharedPreferences prefs = await SharedPreferences.getInstance();
return prefs.getInt("project_id")??0;
}
}
class TaskProvider with ChangeNotifier{
TaskProvider(){
int project_id;
SharedProojectId().getid().then((data) async {
project_id = data;
// SharedProojectId().getid()as int;
//TaskById(project_id: 1 /*widget.project_id*/, titleP: '',).project_id;
print('coming id is $project_id');
await this.fetchTask(project_id);
});
}
List<Task> _task = [];
List<Task> get task {
return [..._task];
}
void addTask(Task task) async {
final response = await http.post(Uri.parse('http://mostafahamed.pythonanywhere.com/project/task'),
headers: {"Content-Type": "application/json"}, body: json.encode(task));
if (response.statusCode == 201) {
task.id = json.decode(response.body)['id'];
_task.add(task);
notifyListeners();
print('suceeed add ed task');
print(response.body);
}else{
print(response.body);
print('failed add ed task');
}
}
void deleteTask(Task task) async {
final response =
await http.delete(Uri.parse('http://mostafahamed.pythonanywhere.com/project/task${task.id}/'));
if (response.statusCode == 204) {
_task.remove(task);
notifyListeners();
}
}
Stream<List<Task>> fetchTask(/*[project_id]*/prpject_id) async*{
final response = await http
.get(Uri.parse('http://mostafahamed.pythonanywhere.com/tasks/?format=json'));
if (response.statusCode==200){
var data = json.decode(response.body)as List;
// _task=data.map<Task>((json) => Task.fromJson(json)).toList();
await Future.delayed(Duration(seconds:3));
_task=data.map<Task>((json) => Task.fromJson(json))
.where((task) => task.project_id == prpject_id ).toList();
notifyListeners();
print('sucess view task list');
print(response.body);
print('$prpject_id in sucess');
yield _task;
}
else {
print(response.body);
print(response.statusCode);
print('$prpject_id in faild');
// If the server did not return a 200 OK response,
// then throw an exception.
throw Exception('Failed to load tasks');
}
}
}
here the the screen where i want to display tasks depend on selected project with futureBuilder using Project_id that i got in the contructor
import 'package:flutter/material.dart';
import 'package:project/model/task_model.dart';
import 'package:project/project_dtetailForTest.dart';
import 'package:provider/provider.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'new_project.dart';
import 'package:flutter/foundation.dart';
import 'package:http/http.dart' as http;
import 'package:project/home_page02.dart';
import 'dart:async';
class TaskById extends StatefulWidget {
//const TaskById({ Key? key }) : super(key: key);
final int project_id;
final String? titleP;
//final Task task =Task();
TaskById({Key? key, required this.project_id,required this.titleP}):super(key: key);
#override
State<TaskById> createState() => _TaskByIdState();
}
class _TaskByIdState extends State<TaskById> {
late Stream _getDash;
#override
void initState() {
// TODO: implement initState
super.initState();
_getDash = TaskProvider().fetchTask(widget.project_id).asBroadcastStream();
}
#override
Widget build(BuildContext context) {
final taskP= Provider.of<TaskProvider>(context);
return Scaffold(
backgroundColor: Colors.white,
appBar: AppBar(
elevation: 0,
bottom: PreferredSize(
child: Container(
color: const Color(0xff94adb4),
height: 2,
width: 320,
),
preferredSize: const Size.fromHeight(4.0)),
centerTitle: true,
backgroundColor:const Color(0xff076792),
title: Text(
'${widget.titleP}-${widget.project_id}',//projecct name + id
style: const TextStyle(color: Colors.white,
fontSize: 35,
fontWeight:FontWeight.w700,
shadows: [
Shadow(
color: Color(0xa6A2B6D4),
blurRadius:20),
] ),
),
leading: IconButton(
onPressed: () {
Navigator.pop(context);
},
icon: const Icon(
Icons.arrow_back,
size: 44,
),
),
actions:[Container(padding: const EdgeInsets.fromLTRB(0, 0, 6, 3),
child: IconButton(
color:Colors.white ,
icon: const Icon(
Icons.search,
size: 44,
),
onPressed: () {},
),
),]
),
//TaskProvider(){
// this.fetchTask();
// }
body: StreamBuilder(
stream: _getDash.asBroadcastStream(),
// TaskProvider().fetchTask(widget.project_id);
builder: (context, stream){
if (stream.hasError) print(stream.error);
if (!stream.hasData) print(stream.data);
if (stream.hasData) print("stream vlaue : ${stream.data}");
print('wdgetP id : ${widget.project_id}');
return stream.hasData
? TaskList(task:stream.data as List<Task>, project_id: widget.project_id, titleP: widget.titleP)
:Center(child: CircularProgressIndicator());
}),
// FutureProvider(
// create: (context) => TaskProvider().fetchTask() ,
// initialData: [CircularProgressIndicator()],
// child:Center(child: Consumer<Task>(
// builder: (context, task, widget) {
// return (taskP !=null) ? Column(
// children: [
// Row(
// children: const [
// Padding(padding: EdgeInsets.all(7),
// child: Padding(
// padding: EdgeInsets.fromLTRB(24,10,10,8),
// child: Text('Project1',
// style: TextStyle(
// color: Color(0xff076792),
// fontSize: 40,
// fontWeight: FontWeight.w600
// ),
// ),
// ),
// ),
// ],
// ),
// // dynamic list
// Expanded(
// child: ListView.builder(
// itemCount: taskP.task.length ,
// itemBuilder: (BuildContext context, int index) {
// return Padding(
// padding: const EdgeInsets.fromLTRB(28, 12, 28, 0),
// child: GestureDetector(
// onTap: () {
// Navigator.push(context, MaterialPageRoute(builder: (context) => projectDetails()));
// },
// child: Card(child:Container(padding: const EdgeInsets.fromLTRB(18,8,9,4),
// width: 100,
// height: 100,
// decoration: BoxDecoration(
// borderRadius: BorderRadius.circular(19.0),
// color: const Color(0xff076792),
// boxShadow: const [
// BoxShadow(color: Colors.black, spreadRadius: 1),
// BoxShadow(color: Color(0xa6A2B6D4),
// offset: Offset(7,5),
// blurRadius:20),
// ],
// ),
// child: Column(children: [
// Row(mainAxisAlignment: MainAxisAlignment.start,
// children: [
// Text('Starting '+taskP.task[index].start.toString(),style:
// const TextStyle(color: Color.fromARGB(255, 133, 186, 202),fontSize: 18,),
// ),
// ],
// ),
// const Spacer(),
// Row(mainAxisAlignment: MainAxisAlignment.center,
// children: [
// Text(taskP.task[index].title??'',style:
// const TextStyle(color: Colors.white,fontSize: 34,)),
// ],
// ),
// const Spacer(),
// Row(mainAxisAlignment: MainAxisAlignment.end,
// children: [
// Text('Ending '+taskP.task[index].end.toString(),style:
// const TextStyle(color: Color.fromARGB(255, 133, 186, 202),
// fontSize: 18,
// )),
// ],
// ),
// ]),
// ),),
// ),
// );
// }),
// )
// ],
// )
// : CircularProgressIndicator();
// },
// ) ,
// )
// // widget.project_id),
// // builder: (context, snapshot){
// // if (snapshot.hasError) print(snapshot.error);
// // return snapshot.hasData
// // ? TaskList(taskP: snapshot.data)
// // : Center(child: CircularProgressIndicator());
// // }),
// )
);
}
}
class TaskList extends StatelessWidget {
final List <Task> task;
final int project_id;
final String? titleP;
TaskList({Key? key, required this.task,required this.project_id ,required this.titleP}) : super(key: key);
#override
Widget build(BuildContext context) {
final taskP= Provider.of<TaskProvider>(context );
// TODO: implement build
return Column(
children: [
Row(
children: [
Padding(padding: const EdgeInsets.all(7),
child: Padding(
padding: const EdgeInsets.fromLTRB(24,10,10,8),
child: Text('$titleP-$project_id',
style: const TextStyle(
color: Color(0xff076792),
fontSize: 40,
fontWeight: FontWeight.w600
),
),
),
),
],
),
// dynamic list
Expanded(
child: ListView.builder(
itemCount: taskP.task.length ,
itemBuilder: (BuildContext context, int index) {
return Padding(
padding: const EdgeInsets.fromLTRB(28, 12, 28, 0),
child: GestureDetector(
onTap: () {
Navigator.push(context, MaterialPageRoute(builder: (context) => projectDetails()));
},
child: Card(child:Container(padding: const EdgeInsets.fromLTRB(18,8,9,4),
width: 100,
height: 100,
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(19.0),
color: const Color(0xff076792),
boxShadow: const [
BoxShadow(color: Colors.black, spreadRadius: 1),
BoxShadow(color: Color(0xa6A2B6D4),
offset: Offset(7,5),
blurRadius:20),
],
),
child: Column(children: [
Row(mainAxisAlignment: MainAxisAlignment.start,
children: [
Text('Starting '+taskP.task[index].start.toString(),style:
const TextStyle(color: Color.fromARGB(255, 133, 186, 202),fontSize: 18,),
),
],
),
const Spacer(),
Row(mainAxisAlignment: MainAxisAlignment.center,
children: [
Text(taskP.task[index].title??'',style:
const TextStyle(color: Colors.white,fontSize: 34,)),
],
),
const Spacer(),
Row(mainAxisAlignment: MainAxisAlignment.end,
children: [
Text('Ending '+taskP.task[index].end.toString(),style:
const TextStyle(color: Color.fromARGB(255, 133, 186, 202),
fontSize: 18,
)),
],
),
]),
),),
),
);
}),
)
],
);
}
}
addition information : i used future builder and it worked well but i discovered it wasn't good idea to use it here as my screen wont be fixed the data and values are changeable when i converted future builder into stream Builder sure i made some changes but the screen don't show data
addition: here is the result of print in console
console result
screen 1 on the app
projects screen where i choose project widget to display it tasks
screen 2 on the app
[after clicking on the project i got the project name and id very easy but task lists doesn't display]
3
id u need more details the code source here https://github.com/alihassan75/project or u can ask for details ..kindly this is important as deadline for send this project close :/

How detect a change on state of flutter widget

I need to detect when my phoneCall variable changes state this to detect when the call ended and show a modal to the user so he can rate the call. This is the widget code.
import 'dart:convert';
import 'package:avanx/flutter/loading_view.dart';
import 'package:avanx/globals.dart';
import 'package:avanx/models/group.dart';
import 'package:avanx/models/prospect.dart';
import 'package:cool_alert/cool_alert.dart';
import 'package:flutter_phone_state/flutter_phone_state.dart';
import 'package:flutter_slidable/flutter_slidable.dart';
import 'package:url_launcher/url_launcher.dart';
import '../flutter/theme.dart';
import 'package:avanx/flutter/input_widget.dart';
import '../flutter/widgets.dart';
import 'package:flutter/material.dart';
import 'package:avanx/flutter/drawer_widget.dart';
import 'package:loading_animations/loading_animations.dart';
import 'package:http/http.dart' as http;
class LeadsHomeWidget extends StatefulWidget {
LeadsHomeWidget({Key key}) : super(key: key);
#override
_LeadsHomeWidgetState createState() => _LeadsHomeWidgetState();
}
class _LeadsHomeWidgetState extends State<LeadsHomeWidget> {
List<dynamic> _leads = [];
List<dynamic> _groups;
var phoneCall;
TextEditingController textController;
final scaffoldKey = GlobalKey<ScaffoldState>();
GlobalKey<FormState> _formKey = GlobalKey();
String _search = '';
_initCall(_number) async {
setState(() {
phoneCall = FlutterPhoneState.startPhoneCall(_number);
});
}
showCallInfo() {
print(phoneCall
.status); // ringing, dialing, cancelled, error, connecting, connected, timedOut, disconnected
print(phoneCall.isComplete); // Whether the call is complete
print(phoneCall
.events); // A list of call events related to this specific call
}
// Metodo para la obtención de los grupos existentes.
getGroups() async {
print("hello");
final response = await http.get(Uri.parse(Globals.avanx + '/groups'),
headers: {"Accept": "application/json"});
if (response.statusCode == 200) {
var groupsList = json.decode(response.body)['groups'];
List<dynamic> groups =
groupsList.map((element) => new Group.fromJson(element)).toList();
setState(() {
_groups = groups;
});
} else {
throw Exception('Failed to load groups');
}
}
getLeads(name) async {
if (name != '') {
String auth = Globals.authUser.user.id.toString();
final response = await http.post(
Uri.parse(Globals.avanx + '/prospects/search/$auth'),
body: {'name': name},
headers: {"Accept": "application/json"});
if (response.statusCode == 200) {
var leadsList = json.decode(response.body)['leads'];
List<dynamic> leads =
leadsList.map((element) => new Prospect.fromJson(element)).toList();
setState(() {
_leads = leads;
});
} else {
throw Exception('Failed to load leads');
}
} else {
setState(() {
_leads = [];
});
}
}
deleteModal(id) {
CoolAlert.show(
context: context,
animType: null,
type: CoolAlertType.warning,
title: '¿Estas Seguro?',
text: "Esta acción no se puede reversar.",
backgroundColor: Color(0xBF35126A),
confirmBtnText: 'Confirmar',
confirmBtnColor: Color(0xBF35126A),
showCancelBtn: true,
cancelBtnText: 'Cancelar',
onConfirmBtnTap: () {
deleteLead(id);
Navigator.pop(context);
});
}
deleteLead(id) async {
final response = await http.delete(
Uri.parse(Globals.avanx + '/prospects/$id'),
headers: {"Accept": "application/json"});
if (response.statusCode == 200) {
_search = '';
this.getLeads(_search);
} else {
throw Exception('Failed to load leads');
}
}
#override
void initState() {
textController = TextEditingController();
this.getGroups();
super.initState();
}
#override
Widget build(BuildContext context) {
return Scaffold(
key: scaffoldKey,
backgroundColor: FlutterTheme.tertiaryColor,
appBar: AppBar(
backgroundColor: FlutterTheme.primaryColor,
title: Text(
'Prospectos',
style: TextStyle(fontFamily: 'Montserrat'),
),
centerTitle: true,
),
drawer: DrawerWidget(),
body: _groups == null
? LoadingWidget()
: Align(
alignment: Alignment(0, 0),
child: Padding(
padding: EdgeInsets.fromLTRB(30, 10, 30, 0),
child: ListView(
padding: EdgeInsets.zero,
scrollDirection: Axis.vertical,
children: _groups == null
? []
: [
Form(
key: _formKey,
child: Row(
children: [
Expanded(
flex: 2,
child: Container(
padding:
EdgeInsets.symmetric(horizontal: 15),
child: InputWidget(
label: 'Buscar prospecto?',
keyBoardType: TextInputType.text,
onChanged: (text) {
_search = text;
},
validator: (text) {
if (text.trim().length == 0) {
return "input data";
}
return null;
},
),
),
),
Expanded(
child: ElevatedButton(
child: Text(
'Buscar',
style: TextStyle(
color: FlutterTheme.primaryColor),
),
onPressed: () {
getLeads(_search);
},
style: ElevatedButton.styleFrom(
side: BorderSide(
width: 1.5,
color: FlutterTheme.primaryColor,
),
primary: Colors.white,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(30),
),
),
),
),
],
),
),
phoneCall.isComplete
? Container(
child: Text('The call is end!!'),
)
: Container(),
for (var lead in _leads ?? [])
Padding(
padding: const EdgeInsets.symmetric(vertical: 10),
child: Slidable(
actionPane: SlidableDrawerActionPane(),
actionExtentRatio: 0.25,
child: Container(
color: Colors.white,
child: ListTile(
leading: CircleAvatar(
backgroundImage: NetworkImage(
'https://ui-avatars.com/api/?name=' +
lead.name +
'&background=35126A&color=fff&size=128'),
),
title: Text(lead.name),
subtitle: Text(
'Grupo: ' + lead.group.name,
style: TextStyle(fontSize: 11),
),
trailing: Container(
width: 100,
child: Row(
children: [
IconButton(
onPressed: () {
_initCall(lead.phone);
},
icon: Icon(
Icons.phone,
size: 35,
color: Color(0xFF35126A),
)),
IconButton(
onPressed: () {
showCallInfo();
},
icon: Icon(
Icons.mail_outline,
size: 35,
color: Color(0xFF35126A),
)),
],
),
),
),
),
secondaryActions: <Widget>[
IconSlideAction(
onTap: () {
Navigator.pushNamed(context, 'leads_edit',
arguments: lead);
},
caption: 'Edit',
color: Color(0xFF35126A),
icon: Icons.edit,
),
IconSlideAction(
onTap: () {
deleteModal(lead.id);
},
caption: 'Delete',
color: Colors.red,
icon: Icons.delete,
),
],
),
),
Padding(
padding: EdgeInsets.fromLTRB(0, 40, 0, 0),
child: ButtonWidget(
onPressed: () {
Navigator.pushNamed(context, 'leads_add_new');
},
text: 'Agregar Nuevo',
options: ButtonOptions(
width: 130,
height: 40,
color: FlutterTheme.tertiaryColor,
textStyle: FlutterTheme.subtitle2.override(
fontFamily: 'Montserrat',
color: FlutterTheme.primaryColor,
),
borderSide: BorderSide(
color: FlutterTheme.primaryColor,
width: 2,
),
borderRadius: 30,
),
),
),
Padding(
padding: EdgeInsets.fromLTRB(0, 40, 0, 0),
child: Text(
'Grupos',
textAlign: TextAlign.center,
style: FlutterTheme.bodyText1.override(
fontFamily: 'Montserrat',
color: Color(0xBF35126A),
fontSize: 20,
),
),
),
for (var group in _groups)
Padding(
padding: EdgeInsets.fromLTRB(0, 20, 0, 0),
child: ButtonWidget(
onPressed: () {
Navigator.pushNamed(context, 'leads_list',
arguments: group);
},
text: group.name,
options: ButtonOptions(
width: 130,
height: 40,
color: FlutterTheme.primaryColor,
textStyle: FlutterTheme.subtitle2.override(
fontFamily: 'Montserrat',
color: Colors.white,
),
borderSide: BorderSide(
color: Colors.transparent,
width: 1,
),
borderRadius: 30,
),
),
),
],
),
),
),
);
}
}
The function _initCall is the one in charge of initializing the call, so the variable phoneCall will have the information of the state of the call, I want to launch a modal when the call finishes.

FLUTTER - Can someone help me get this post button to execute?

I hope you all are doing well today. I have another flutter issue that I have been stuck on for the past few days now. I'm attempting to upload this data to my firestore instance, but my post button never seems to be triggering. I have attempted to print a statement from the method that it evokes, but I can't seem to get that to work either. I'm attempting to create a social media app, and any and all help would be appreciated.
My main goal is to get the post button to execute in upload.dart.
I have also included home.dart since the two classes are connected in terms of performance.
upload.dart
import 'dart:io';
import 'package:cached_network_image/cached_network_image.dart';
import 'package:firebase_storage/firebase_storage.dart';
import 'package:flutter/material.dart';
import 'package:flutter_svg/flutter_svg.dart';
import 'package:fluttermedia/models/user.dart';
import 'package:fluttermedia/pages/home.dart';
import 'package:fluttermedia/widgets/progress.dart';
import 'package:image_picker/image_picker.dart';
import 'package:path_provider/path_provider.dart';
import 'package:image/image.dart' as Im;
import 'package:uuid/uuid.dart';
class Upload extends StatefulWidget {
final User currentUser;
Upload({this.currentUser});
#override
_UploadState createState() => _UploadState();
}
class _UploadState extends State<Upload> {
TextEditingController locationController = TextEditingController();
TextEditingController captionController = TextEditingController();
File file;
bool isUploading = false;
String postId = Uuid().v4();
handleChooseFromGallery() async{
Navigator.pop(context);
File file = await ImagePicker.pickImage(source: ImageSource.gallery);
setState(() {
this.file = file;
});
}
handleTakePhoto() async {
Navigator.pop(context);
File file = await ImagePicker.pickImage(source: ImageSource.camera,maxHeight: 675,maxWidth: 960);
setState(() {
this.file = file;
});
}
selectImage(parentContext){
return showDialog(
context: parentContext,
builder: (context) {
return SimpleDialog(
title: Text("Create Post"),
children: <Widget>[
SimpleDialogOption(
child: Text("Photo With Camera"),
onPressed: handleTakePhoto,
),
SimpleDialogOption(
child: Text("Image from Gallery"),
onPressed: handleChooseFromGallery,
),
SimpleDialogOption(
child: Text("Cancel"),
onPressed: () => Navigator.pop(context),
),
],
);
}
);
}
Container buildSplashScreen(){
return Container(
color: Theme.of(context).accentColor.withOpacity(0.6),
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
SvgPicture.asset('assets/images/upload.svg',height: 260.0,),
Padding(
padding: EdgeInsets.only(top:20.0),
child: RaisedButton(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(8.0),
),
child: Text(
"Upload Image",
style: TextStyle(
color: Colors.white,
fontSize: 22.0,
),
),
color: Colors.deepOrange,
onPressed: () => selectImage(context),
),
)
],
),
);
}
clearImage(){
setState(() {
file = null;
});
}
//This compresses images for firebase
compressImage() async{
final tempDir = await getTemporaryDirectory();
final path = tempDir.path;
Im.Image imageFile = Im.decodeImage(file.readAsBytesSync());
final compressedImageFile = File('$path/img_$postId.jpg')..writeAsBytesSync(Im.encodeJpg(imageFile,quality: 85));
setState(() {
file = compressedImageFile;
});
}
Future<String> uploadImage(imageFile) async{
StorageUploadTask uploadTask = storageRef.child("post_$postId.jpg").putFile(imageFile);
StorageTaskSnapshot storageSnap = await uploadTask.onComplete;
String downloadUrl = await storageSnap.ref.getDownloadURL();
return downloadUrl;
}
//upload new info to firestore that creates a new collection
createPostInFirestore({String mediaUrl, String location, String description}){
postsRef.document(widget.currentUser.id)
.collection("userPosts")
.document(postId)
.setData({
"postId": postId,
"ownerId": widget.currentUser.id,
"username": widget.currentUser.username,
"mediaUrl": mediaUrl,
"description": description,
"location": location,
"timestamp": timeStamp,
"likes":{}
});
}
//Getting the info from the caption, location and pic
handleSubmit() async{
setState(() {
isUploading = true;
});
await compressImage();
String mediaUrl = await uploadImage(file);
createPostInFirestore(
mediaUrl: mediaUrl,
location: locationController.text,
description: captionController.text,
);
captionController.clear();
locationController.clear();
setState(() {
file = null;
isUploading = false;
});
}
Scaffold buildUploadForm(){
return Scaffold(
appBar: AppBar(
backgroundColor: Colors.white70,
leading: IconButton(
icon: Icon(Icons.arrow_back,color: Colors.black,),
onPressed: clearImage,
),
title: Text(
"Caption Post",
style: TextStyle(color: Colors.black),
),
actions: <Widget>[
FlatButton(
onPressed: () => isUploading ? null : () => handleSubmit(),
child: Text(
"Post",
style: TextStyle(
color: Colors.blueAccent,
fontWeight: FontWeight.bold,
fontSize: 20.0,
),
),
)
],
),
body: ListView(
children: <Widget>[
isUploading ? linearProgress(context):Text(""),
Container(
height: 220.0,
width: MediaQuery.of(context).size.width*0.8,
child: Center(
child: AspectRatio(
aspectRatio: 16/9,
child: Container(
decoration: BoxDecoration(
image: DecorationImage(
fit: BoxFit.cover,
image: FileImage(file),
)
),
),
),
),
),
Padding(
padding: EdgeInsets.only(top:10),
),
ListTile(
leading: CircleAvatar(
backgroundImage: CachedNetworkImageProvider(widget.currentUser.photoUrl),
),
title: Container(
width: 250.0,
child: TextField(
controller: captionController,
decoration: InputDecoration(
hintText: "Write a Caption...",
border: InputBorder.none,
),
),
),
),
Divider(),
ListTile(
leading: Icon(Icons.pin_drop,color: Colors.orange,size: 35.0),
title: Container(
width: 250.0,
child: TextField(
controller: locationController,
decoration: InputDecoration(
hintText: "Where was this photo taken",
border: InputBorder.none,
),
),
),
),
Container(
width: 200.0,
height: 100.0,
alignment: Alignment.center,
child: RaisedButton.icon(
label: Text(
"Use Current Location",
style: TextStyle(color: Colors.white),
),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(30.0),
),
color: Colors.blue,
onPressed: () => print("Get user location"),
icon: Icon(
Icons.my_location,
color: Colors.white,
),
),
)
],
),
);
}
#override
Widget build(BuildContext context) {
return file == null ? buildSplashScreen() : buildUploadForm();
}
}
home.dart
import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:firebase_storage/firebase_storage.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:fluttermedia/models/user.dart';
import 'package:fluttermedia/pages/activity_feed.dart';
import 'package:fluttermedia/pages/create_account.dart';
import 'package:fluttermedia/pages/profile.dart';
import 'package:fluttermedia/pages/search.dart';
import 'package:fluttermedia/pages/upload.dart';
import 'package:google_sign_in/google_sign_in.dart';
final GoogleSignIn googleSignIn = GoogleSignIn();
final StorageReference storageRef = FirebaseStorage.instance.ref();
final usersRef = Firestore.instance.collection('users');
final postsRef = Firestore.instance.collection('posts');
final DateTime timeStamp = DateTime.now();
User currentUser;
class Home extends StatefulWidget {
#override
_HomeState createState() => _HomeState();
}
class _HomeState extends State<Home> {
bool isAuth = false;
PageController pageController;
int pageIndex = 0;
#override
void initState() {
super.initState();
pageController = PageController();
// Detects if user signs in
googleSignIn.onCurrentUserChanged.listen((account) {
handleSignIn(account);
}, onError: (err){
print('Error sigining in: $err');
});
//Reauthenticate user when app is opened
googleSignIn.signInSilently(suppressErrors: false)
.then((account) =>
handleSignIn(account)).catchError((err){
print('Error signing in on retry: $err');
});
}
#override
Widget build(BuildContext context) {
return isAuth ? buildAuthScreen() : buildUnAuthScreen();
}
#override
void dispose(){
pageController.dispose();
super.dispose();
}
//Helper Functions
//The sign in section of the code
handleSignIn(GoogleSignInAccount account){
if(account != null){
createUserInFirestore();
setState(() {
isAuth = true;
});
}else{
setState(() {
isAuth = false;
});
}
}
login(){
googleSignIn.signIn();
}
logout(){
googleSignIn.signOut();
}
onPageChanged(int pageIndex){
setState(() {
this.pageIndex = pageIndex;
});
}
createUserInFirestore() async{
// 1) Check if user exists in users collection in database (According to id)
final GoogleSignInAccount user = googleSignIn.currentUser;
DocumentSnapshot doc = await usersRef.document(user.id).get();
if(!doc.exists){
// 2) If the user doesn't exist, take them to create account page
final username = await Navigator.push(context, MaterialPageRoute(builder: (context) => CreateAccount()));
// 3) get username from create account, use it to make new user document in users collection
usersRef.document(user.id).setData({
"id":user.id,
"username":username,
"photoUrl": user.photoUrl,
"email":user.email,
"displayName": user.displayName,
"bio":"",
"timeStamp": timeStamp,
});
doc = await usersRef.document(user.id).get();
}
currentUser = User.fromDocument(doc);
//print(currentUser);
//print(currentUser.username);
}
onTap(int pageIndex){
//This what you would use to animate in between the different screens
pageController.animateToPage(
pageIndex,
duration: Duration(milliseconds: 300),
curve: Curves.easeInOut
);
}
//UI Code
Widget buildAuthScreen() {
return Scaffold(
body: PageView(
children: <Widget>[
//Timeline(),
RaisedButton(
child: Text('Logout'),
onPressed: logout,
),
ActivityFeed(),
Upload(currentUser: currentUser),
Search(),
Profile(),
],
controller: pageController,
onPageChanged: onPageChanged,
physics: NeverScrollableScrollPhysics(),
),
bottomNavigationBar: CupertinoTabBar(
currentIndex: pageIndex,
onTap: onTap,
activeColor: Theme.of(context).primaryColor,
items: [
BottomNavigationBarItem(icon: Icon(Icons.whatshot),),
BottomNavigationBarItem(icon: Icon(Icons.notifications_active),),
BottomNavigationBarItem(icon: Icon(Icons.photo_camera, size: 34.0,),),
BottomNavigationBarItem(icon: Icon(Icons.search),),
BottomNavigationBarItem(icon: Icon(Icons.account_circle),),
],
),
);
/*return RaisedButton(
child: Text('Logout'),
onPressed: logout,
);*/
}
Scaffold buildUnAuthScreen() {
return Scaffold(
body: Container(
width: MediaQuery.of(context).size.width,
height: MediaQuery.of(context).size.height,
decoration: BoxDecoration(
gradient: LinearGradient(
begin: Alignment.topRight,
end: Alignment.bottomLeft,
colors: [
Theme.of(context).primaryColor,
Theme.of(context).accentColor,
]
)
),
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.center,
children: <Widget>[
Text('FlutterMedia',
style: TextStyle(
fontFamily: "Signatra",
fontSize: 90.0,
color: Colors.white
),
),
GestureDetector(
onTap:() => login(),
child: Container(
width: 260,
height: 60,
decoration: BoxDecoration(
image: DecorationImage(
image: AssetImage('assets/images/google_signin_button.png'),
fit: BoxFit.cover,
),
),
),
)
],
),
),
);
}
}

onPressed: () => isUploading ? null : () => handleSubmit(),
Well, there's your problem. You meant to have a tertiary condition that makes onPressed call handleSubmit when isUploading is false. Instead, you have made onPressed into a function that returns a function.
To hopefully make that more clear, let's blow this function up into proper non-lambda functions and if/else blocks:
onPressed: () {
if (isUploading) {
return null;
} else {
return () {
handleUpload();
}
}
}
So consider what happens when the button is pressed. It calls the outer function, which checks isUploading. If true, the function returns null, and if false, it returns another function that, if called, calls handleUpload. So how this plays out is that onPressed will never be null (it just returns null sometimes) and handleUpload never gets called (since the inner function that is returned is never then called itself).
Remove the outer lambda and it will work:
onPressed: isUploading ? null : () => handleSubmit(),

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