'package:flutter/src/widgets/image.dart': Failed assertion: line 136 pos 15: 'image != null': is not true. #17900
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c: crash
Stack traces logged to the console
Comments
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Sounds like a timing issue. Can you post the code that causes the issue? |
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My code of LoginPage is: // Core
import 'dart:async';
import 'package:flutter/material.dart';
// Plugins
import 'package:firebase_auth/firebase_auth.dart';
import 'package:google_sign_in/google_sign_in.dart';
// Pages
import 'package:digital_frame/pages/home.page.dart';
// Services
import 'package:digital_frame/services/storage.services.dart';
import 'package:digital_frame/services/facebook.services.dart';
import 'package:digital_frame/services/share.services.dart';
class LoginPage extends StatefulWidget {
LoginPage({Key key, this.title}) : super(key: key);
final String title;
@override
_LoginPageState createState() => new _LoginPageState();
}
class _LoginPageState extends State<LoginPage> {
static const String _facebook_appID = 'xxxxxxxxxxx';
static const String _facebook_appSecret = 'xxxxxxxxxxxxxx';
String serverURL = "http://10.0.0.3:8810";
final FirebaseAuth _auth = FirebaseAuth.instance;
final GoogleSignIn googleSignIn = new GoogleSignIn();
final FacebookLogin fb = new FacebookLogin(appID: _facebook_appID, appSecret: _facebook_appSecret);
final Map<String, dynamic> headers = new Map<String, dynamic>();
Future _g_firebaseSignIn() async {
// Show Firebase Google SignIn
GoogleSignInAccount googleSI_acc = await googleSignIn.signIn();
GoogleSignInAuthentication gsiAuth = await googleSI_acc.authentication;
FirebaseUser user = await _auth.signInWithGoogle(idToken: gsiAuth.idToken, accessToken: gsiAuth.accessToken);
return FirebaseAuth.instance.currentUser().then((user) {
return user.getIdToken(refresh: true).then((idToken) {
print(idToken);
List<String> splittedName = googleSI_acc.displayName.split(' ');
Map<String, dynamic> googleData = new Map<String, dynamic>();
googleData['accessToken'] = gsiAuth.accessToken;
googleData['idToken'] = idToken;
googleData['userId'] = googleSI_acc.id;
googleData['displayName'] = googleSI_acc.displayName;
googleData['familyName'] = splittedName[splittedName.length - 1];
googleData['givenName'] = splittedName[0];
googleData['photoUrl'] = googleSI_acc.photoUrl;
googleData['email'] = googleSI_acc.email;
googleData['method'] = 'Google';
return googleData;
});
});
}
_loginByGoogle() {
_g_firebaseSignIn().then((userData) async {
// Get digital-frame server accessToken && refreshToken
ShareSerivces.loginReq(url: serverURL + '/app/newUser', headers: null, body: userData).then((res) {
Map<String, dynamic> resData = res['data'];
var dataToSave = {
'accessToken': resData['accessToken'],
'refreshToken': resData['refreshToken'],
'userID': userData['userId'],
'method': userData['method']
};
// Saves The { refreshToken, accessToken, userID, method } in LocalStorage
_saveUserIntoStorage(dataToSave);
Navigator.push(
context,
new MaterialPageRoute(builder: (context) => new HomePage(title: 'Home')),
);
});
});
}
// Map<String, dynamic> is JSON object in dart
_saveUserIntoStorage(dynamic usrData) {
Map<String, dynamic> loginObject = {
'accessToken': usrData['accessToken'],
'refreshToken': usrData['refreshToken'],
'userID': usrData['userID']
};
StorageH.setJSON(StorageH.loginObject, loginObject);
print('Data saved');
}
_logoutByGoogle() {
StorageH.remove(StorageH.loginObject);
googleSignIn.signOut();
print('User signed out (Google)');
}
_loginByFacebook() async {
fb.sign_in().then((token) async {
return await FirebaseAuth.instance.signInWithFacebook(accessToken: token.accessToken).then((facebookUser) {
return facebookUser.getIdToken(refresh: true).then((idToken) {
print('Facebook user: $facebookUser');
Map<String, dynamic> facebookData = new Map<String, dynamic>();
facebookData['idToken'] = idToken;
facebookData['uid'] = facebookUser.uid;
facebookData['displayName'] = facebookUser.displayName;
facebookData['photoUrl'] = facebookUser.photoUrl;
facebookData['email'] = facebookUser.email;
facebookData['method'] = 'Facebook';
return facebookData;
});
});
}).catchError((dynamic onError) {
print(onError);
});
}
void _logoutByFacebook() {
fb.sign_out();
print('User signed out (Facebook)');
}
@override
Widget build(BuildContext context) {
return new Scaffold(
// backgroundColor: new Color.fromRGBO(2, 71, 23, 1.0),
body: new Center(
child: new Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
new Container(
child: new Image.network('https://cdn6.aptoide.com/imgs/2/b/8/2b843bca0e484cd73192c27b31b99064_icon.png?w=100?raw=true'),
width: 80.0,
margin: new EdgeInsets.only(bottom: 10.0),
alignment: new AlignmentDirectional(50.0, 20.0)
),
new Container(
margin: new EdgeInsets.all(5.0),
child: new RaisedButton.icon(
icon: new Icon(Icons.lock_open),
label: new Text('Sign in With Google'),
textColor: Colors.white,
color: Colors.redAccent,
onPressed: () => _loginByGoogle()
)
),
new Container(
child: new RaisedButton.icon(
icon: new Icon(Icons.tag_faces),
label: new Text('Sign in with Facebook'),
color: Colors.blue[900],
textColor: Colors.white,
onPressed: () => _loginByFacebook()
)
)
]
)
)
);
}
}and my flutter doctor output is: |
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I am also getting similar kind of error while testing the app using flutter test |
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Also, similar issue... |
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@yash365 @cathalgreaney seems you just passed |
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Thank you.. the underlying issue was with a conflict between two flutter packages I am using together.. they are: |
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Following package version combination working when using MapView and Location packages: |
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Should also mention, I'm testing on Android API27 emulator.. I experienced issues when testing on Android API 23 emulator. |
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terminal display: my flutter: |
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@lyquocnam what was the intention of your comment? |
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Similar issue here too |
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@genchrist your issue is unrelated. |
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@agnoam I think this was an issue with your code or perhaps something |
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|
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@agnoamI had the same problem, but it was because I had a Listview, I replaced it and placed a Column |
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This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of |
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Hi,
I have a compile error just at the first time that I run my app.
The error is:
But when I refresh it again everything is ok.
anyone know what make the problem ?
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