小编Ris*_*qui的帖子

import 'dart:math';

import 'package:flutter/cupertino.dart';
import 'package:multi_purpose_scope/Animation/FadeAnimation.dart';
import 'package:flutter/material.dart';
import 'package:firebase_auth/firebase_auth.dart';
import 'package:firebase_core/firebase_core.dart';


Future<void>main() async{
    WidgetsFlutterBinding.ensureInitialized();
}

class HomePage extends StatelessWidget {
    final FirebaseApp _fbApp=Firebase.initializeApp();

    final _formKey = GlobalKey<FormState>();
    TextEditingController _emailController = TextEditingController();
    TextEditingController _passwordController = TextEditingController();


    gotoSecondActivity(BuildContext context){
        final mq=MediaQuery.of(context);
        Navigator.push(
            context,
            MaterialPageRoute(builder: (context) => SecondActivity()),
        );
    }
    @override
    Widget build(BuildContext context) {

       TextEditingController _emailControllerField=TextEditingController();
       TextEditingController _passwordControllerField=TextEditingController();

        return Scaffold(

                backgroundColor: Colors.white,
                body: SingleChildScrollView(
                child: RaisedButton(
                    onPressed: () async {
                        gotoSecondActivity(context);
                      try{
                        FirebaseUser user=(await FirebaseAuth.instance.signInWithEmailAndPassword( …