Centering ListView in Flutter

Use SingleChildScrollView instead of ListView. Try this...

 @override
  Widget build(BuildContext context) {
    return Scaffold(
        body: Center(
          child: SingleChildScrollView(
            child: Column(
            children: <Widget>[
              Image.asset('assets/images/logo.png', scale: 3.0,),
              InputField('enter email address', Icons.email, TextInputType.emailAddress),
              PasswordInputField('enter password', Icons.lock, TextInputType.text),
              RoundBtn('SIGN IN', signIn),
              RoundBtn('SIGN UP', () => {}),
              OutlineBtn('FORGOT PASSWORD?', () => {})
            ],
          ),
        ),)
    );
  }

ListView cannot be added to the center of the screen. Still, no official documentation is there. But still, if you want to do

Example:

Center(
    child: ListView(
      shrinkWrap: true,
      children: <Widget>[
        Center(child: Text('Text1')),
        Center(child: Text('Text2')),
        Center(child: Text('Text3')),
      ],
    ),
  )

Output: