What to do If I can't assign Future functions to onPressed in flutter?

Question

I have a proplem in assigning a sign in future method to onpressed :The argument type 'Future' can't be assigned to the parameter type 'void Function()'.

Can you please add your tried code? – Jitesh Mohite May 29 '20 at 15:36 — Jitesh Mohite, May 29 '20 at 15:36
It was solved but thanks anyway – Omar Yacop May 29 '20 at 15:43 — Omar Yacop, May 29 '20 at 15:43

score 4 · Accepted Answer · answered May 29 '20 at 15:37

4

you have to assign it like this:

onpressed: () => FunctionName()

Because the handler expects a function with no return. So we just call your function inside an anonymous void function.

answered May 29 '20 at 15:37

Benedikt J Schlegel

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Ok Thanks but one last thing ? – Omar Yacop May 29 '20 at 15:39
Sure, what is it? – Benedikt J Schlegel May 29 '20 at 15:40
A TextEditingController can't be assigned to type String. – Omar Yacop May 29 '20 at 15:41
and I want to sign in with email and password from a text field – Omar Yacop May 29 '20 at 15:42
@OmarYacop You have to look at the function and see what it is expecting to get, and then pass that. I think you'd really benefit from going through some tutorials on the basics of Flutter/Dart, here is a good basics course video: https://www.youtube.com/watch?v=x0uinJvhNxI – Benedikt J Schlegel May 29 '20 at 15:44

What to do If I can't assign Future functions to onPressed in flutter?

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