signInWithGoogle().whenComplete is triggered whether or not the login succeeds

[pgainullin]

which seems to be the expected behaviour of whenComplete:

"Registers a function to be called when this future completes.
The [action] function is called when this future completes, whether it does so with a value or with an error."

changing the signInWithGoogle() to return the user and then rewriting as follows seems to do the trick:

        signInWithGoogle().then((user) {
          if (user != null) {
            Navigator.of(context).push(
              MaterialPageRoute(
                builder: (context) {
                  return [...]();
                },
              ),
            );
          }

[daniele777]

Where i can implement this part? i have this type of issue

[pgainullin]

sign_in_flutter/lib/login_page.dart

Line 56 in 5ad9067

signInWithGoogle().whenComplete(() {

<<this line

however your issue is potentially unrelated and could occur because the user metadata does not contain a picture URL (presumably triggered here -

sign_in_flutter/lib/first_screen.dart

Line 44 in 5ad9067

imageUrl,

)

[daniele777]

Same error i can't return in login screen with crediential of google accont.... idea?

[pgainullin]

a bit hard to say especially not seeing the actual logs for the error (from the Run tab or Logcat).

try commenting out the whole section using Image.network here -

sign_in_flutter/lib/first_screen.dart

Lines 42 to 48 in 5ad9067

	CircleAvatar(
	backgroundImage: NetworkImage(
	imageUrl,
	),
	radius: 60,
	backgroundColor: Colors.transparent,
	),

[daniele777]

Authentication good i retrive link of my photo and name and email..but still have problem..

A non-null String must be provided to a Text widget.
'package:flutter/src/widgets/text.dart':
Failed assertion: line 285 pos 10: 'data != null'

[chrisbinsunny]

This problem still exists. I guess providing a FutureBuilder can solve the issue. If anyone knows how to solve this, please help.

[sbis04]

I have fixed this issue. Please check out the latest master branch of this repo. Refer: ad503dc

Closing