FOR ANDROID When we focus on Bio text field inside signUp page the textflied does not go up that is we can not see what we are typing if we wrap the container inside the safearea in singleChildScrollView() the issue will be fixed plus we can add physics of bouncingscrollphysics so that it looks clean

here my is code for just UI import 'package:flutter/material.dart'; import 'package:flutter_svg/flutter_svg.dart'; import 'package:instagram/utils/color.dart'; import 'package:instagram/widgets/text_fill_input.dart';

class SignUpScreen extends StatefulWidget { const SignUpScreen({Key? key}) : super(key: key);

@override _SignUpScreenState createState() => _SignUpScreenState(); }

class _SignUpScreenState extends State { final TextEditingController _emailController = TextEditingController(); final TextEditingController _passwordController = TextEditingController(); final TextEditingController _bioController = TextEditingController(); final TextEditingController _usernameController = TextEditingController(); @override void dispose() { // TODO: implement dispose super.dispose(); _emailController.dispose(); _passwordController.dispose(); _bioController.dispose(); _usernameController.dispose(); }

@override Widget build(BuildContext context) { return Scaffold( body: SafeArea( child: SingleChildScrollView( physics: const BouncingScrollPhysics(), child: Padding( padding: const EdgeInsets.symmetric(horizontal: 32), child: Container( width: double.infinity, child: Column( crossAxisAlignment: CrossAxisAlignment.center, children: [ // Flexible( // child: Container(), // flex: 2, // ), //svg image SvgPicture.asset( 'assets/ic_instagram.svg', color: primaryColor, height: 64, ), const SizedBox( height: 64, ), //circle avaatar InkWell( onTap: () {}, borderRadius: BorderRadius.circular(100), child: const Padding( padding: EdgeInsets.all(8.0), child: CircleAvatar( radius: 64, backgroundImage: NetworkImage( 'https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcSyRQMnGzDaaUvx0wbRLJnc_JzEz_VCs44CBY-UOvh0kaacPJEAgPnXWQCYf2WroEwfl7w&usqp=CAU'), ), ), ), const SizedBox( height: 24, ), //text field for username TextFieldInput( textEditingController: _usernameController, hintText: 'Enter Your Username', textInputType: TextInputType.text), const SizedBox( height: 24, ), //text field for email TextFieldInput( textEditingController: _emailController, hintText: 'Enter Your Email', textInputType: TextInputType.emailAddress), const SizedBox( height: 24, ), //text fiel for password TextFieldInput( textEditingController: _passwordController, hintText: 'Enter Your Password', textInputType: TextInputType.text, isPass: true, ), const SizedBox( height: 24, ), //text field for bio TextFieldInput( textEditingController: _bioController, hintText: 'Enter Your Bio', textInputType: TextInputType.text), const SizedBox( height: 24, ), //button login InkWell( onTap: () {}, child: Container( child: const Text("Sign up"), width: double.infinity, alignment: Alignment.center, padding: const EdgeInsets.symmetric(vertical: 12), decoration: ShapeDecoration( shape: RoundedRectangleBorder( borderRadius: BorderRadius.circular(4), ), color: blueColor, ), ), ), const SizedBox( height: 12, ), // Flexible( // child: Container(), // flex: 2, // ), //transition to signing up Row( mainAxisAlignment: MainAxisAlignment.center, children: [ Padding( padding: const EdgeInsets.symmetric(vertical: 8.0), child: Container( child: const Text("Don't have an account?"), ), ), GestureDetector( onTap: () {}, child: Padding( padding: const EdgeInsets.symmetric(vertical: 8.0), child: Container( child: const Text( " Sign up.", style: TextStyle( fontWeight: FontWeight.bold, ), ), ), ), ) ], ) ], ), ), ), ), )); } }

Hi everyone, the _image is null, so the signUpUser cannot be triggered if the user does not enter an image. this leads to an error by the postfix ! operator. _CastError (Null check operator used on a null value).

String res = await AuthMetods().signUpUser( email: _emailController.text, bio: _bioController.text, password: _passwordController.text, username: _usernameController.text, file: _image!, );

If we follow the logic of the application the user will have a default image.

how can we manage this with Firebase ? if the user doesn't enter an image ?

In the android/app/build.gradle you refernced flutter.compileSdkVersion (this appears to be read from somewhere else?, how/where is the compileSdkVersion set?)

Likewise you referenced flutter.targetSdkVersion (where does this come from?)

I think you have made a mistake on both methods loginUser and signUpUser you have used operator OR instead of AND. therefore the fields are not required.

` if (email.isNotEmpty || password.isNotEmpty || username.isNotEmpty || bio.isNotEmpty || file != null) {

return "Only one fiield are required with the || operator";

} `

You might be having this error for the search_screen : Bad state: field does not exist within the DocumentSnapshotPlatform You need to had in FutureBuilder : body: isShowUsers ? FutureBuilder(

I setup Firebase auth, database, storage, on android and updated goole_service..json (I am on windows pc, using android emulator)

After clicking on create user I get

Null check operator used on a null value See also: https://flutter.dev/docs /testing/errors

When I go to an other profil, the number of the posts keep the value of the current user connected. And the other data like Followers and Following is working.

====> Resolve :

Change your variable "postSnap" by :

var postSnap = await FirebaseFirestore.instance
          .collection('posts')
          .where('uid', isEqualTo: widget.uid)
          .get();

If you get "StateError (Bad state: field does not exist within the DocumentSnapshotPlatform)" on search screen at :

(snapshot.data! as dynamic).docs[index] ['photoUrl'],

you should use: if (snapshot.connectionState == ConnectionState.waiting)

instead of : if (!snapshot.hasData)

It looks like hasdata returns true for any non-null data, and [] is non-null data, hence hasdata will return true while the snapshot is still in a waiting state.

Always use ConnectionState.waiting, never use junky hasdata which actually means "not null".

All changes:

• update kotlin version // to run in flutter 3.3.10 version
• added null check at a time of user creation so user can create profile without uploading the profile image
• Replace the custom textfield with better coding style.

Error showing in debug console E/flutter ( 9425): [ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: type 'Null' is not a subtype of type 'String' E/flutter ( 9425): #0 User.fromSnap package:insta_clone/models/user.dart:26 E/flutter ( 9425): #1 AuthMethods.getUserDetails package:insta_clone/resources/auth_methods.dart:19 E/flutter ( 9425): E/flutter ( 9425): #2 UserProvider.refreshUser package:insta_clone/providers/user_provider.dart:13 E/flutter ( 9425): E/flutter ( 9425): #3 _ResponsiveLayoutState.addData package:insta_clone/responsive/responsive_layout.dart:28 E/flutter ( 9425):

From user.dart static User fromSnap(DocumentSnapshot snap) { var snapshot = snap.data() as Map<String, dynamic>; return User( username: snapshot['username'], uid: snapshot['uid'], email: snapshot['email'], photoUrl: snapshot['photoUrl'], (error putting here on ['photoUrl') followers: snapshot['followers'], following: snapshot['following'], ); }

From auth_methods.dart DocumentSnapshot documentSnapshot = await _firestore.collection('users').doc(currentUser.uid).get();

return model.User.fromSnap(documentSnapshot); (error pointing here on fromSnap)

} please help stuck here from last 1 week, i have tried solutions to solve that red screen problem, but after that it just showing cirular progess indicator, i have deleted users from database but after that too its showing errors.

I have upgraded some minor packages and fixed the null check by adding an if condition and another condition to make other values not empty. Here #10 and #3 are fixed. Thank you

Hello everyone, I am encountering the issue of null check, I followed the tutorial video, around 3:17:28, when I switched the networkImage with user.photoUrl:

The null check error was thrown from the userProvider, error message: Exception has occurred. _CastError (Null check operator used on a null value), my code of userProvider.dart:

I have already tried upgrading the pub version, or using the final Userprovider userprovider instead of User, the result is either showing nothing after pressing the upload icon, or throwing the error of: Exception has occurred. _CastError (Null check operator used on a null value).

I would like to know how to resolve it, Thanks!