带火基的埃罗

Question

我是新来的。Im尝试连接firebase，在屏幕登录中验证电子邮件和密码。

代码：

import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:login/page.dart';
import 'package:login/register_page.dart';
import 'package:firebase_auth/firebase_auth.dart';

import 'forgivePassword.dart';

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  String _email, _password;
  final GlobalKey<FormState> _formKey = GlobalKey<FormState>();


  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: Colors.blue,
      body: Center(
        child: SizedBox(
          width: 380,
          height: 400,
          child: Form(
            key: _formKey,
            child: Card(
              shape: RoundedRectangleBorder(
                borderRadius: BorderRadius.circular(20.0)
              ),
              child: Column(
                mainAxisAlignment: MainAxisAlignment.center,
                children: [
                  Container(
                    padding: EdgeInsets.only(top: 10.0),
                  ),
                  Container(
                    padding: EdgeInsets.fromLTRB(50.0, 1.0, 50.0, 1.0),
                    child: TextFormField(
                      validator: (input){
                        if(input.isEmpty){
                          return ;
                        }
                      },
                      onSaved: (input) => _email = input,
                      keyboardType: TextInputType.emailAddress,
                      decoration: InputDecoration(
                        labelText: "E-mail",
                        border: OutlineInputBorder(
                          borderRadius: BorderRadius.all(Radius.circular(20.0))
                        )
                      ),
                    ),
                  ),

                  Container(
                    padding: EdgeInsets.only(top: 10.0),
                  ),
                  Container(
                    padding: EdgeInsets.fromLTRB(50.0, 1.0, 50.0, 0.0),
                    child: TextFormField(
                      validator: (input){
                        if(input.length < 6){
                          return 'Your password needs to be atleast 6 characters';
                        }
                      },
                      onSaved: (input) => _password = input,
                      obscureText: true,
                      decoration: const InputDecoration(
                          labelText: "Password",
                          border: OutlineInputBorder(
                              borderRadius: BorderRadius.all(Radius.circular(20.0)))),
                      keyboardType: TextInputType.emailAddress,
                    ),
                  ),
                  Row(
                    children: [
                      Padding(
                        padding: const EdgeInsets.fromLTRB(178, 0, 0, 0),
                        child: TextButton(
                            onPressed: () {
                              Navigator.push(
                                  context,
                                  MaterialPageRoute(
                                      builder: (BuildContext context) =>
                                          ForgivePassword()));
                            },
                            child: Text(
                              "Esqueci minha senha",
                              style: TextStyle(
                                color: Colors.blue,
                                decoration: TextDecoration.underline,
                              ),
                            )),
                      )
                    ],
                  ),
                  SizedBox(
                      width: 310,
                      height: 35,
                      child: RaisedButton(
                        color: Colors.blue,
                        textColor: Colors.white,
                        shape: RoundedRectangleBorder(
                          borderRadius: BorderRadius.circular(20.0),
                        ),
                        onPressed: sigIn,
                        child: Text("Login"),
                      )),
                  Padding(
                    padding: const EdgeInsets.only(top: 15.0),
                    child: SizedBox(
                        width: 310,
                        height: 35,
                        child: RaisedButton(
                          color: Colors.blue,
                          textColor: Colors.white,
                          shape: RoundedRectangleBorder(
                            borderRadius: BorderRadius.circular(20.0),
                          ),
                          onPressed: () {
                            Navigator.push(
                                context,
                                MaterialPageRoute(
                                    builder: (BuildContext context) =>
                                        PaginaRegistro()));
                          },
                          child: Text("Registre-se"),
                        )),
                  ),
                ],
              ),
            ),
          ),
        ),
      ),
    );
  }
  Future<void> sigIn() async{
    final formState = _formKey.currentState;
    if(formState.validate()){
      try{
        UserCredential user =  await FirebaseAuth.
        instance.signInWithEmailAndPassword(email: _email, password: _password);
        Navigator.push(context, MaterialPageRoute(builder: (context) => Home()));
      }catch(e){
        print(e.massage);
      }
    }
  }
}

错误：

正在执行热重启。。。正在将文件同步到IA Emulator上的设备AOSP。。。在925ms内重新启动应用程序。E/flatter（4428）：[ERROR:flatter/lib/ui/ui\u dart\u state.cc（186）]未处理的异常：NoSuchMethodError:类“FirebaseException”没有实例getter“按摩”。E/flatter（4428）：接收器：“FirebaseException”的实例E/flatter（4428）：尝试调用：按摩E/flatter（4428）：#0对象。无此方法（dart:core patch/object_patch.dart:54:5）E/颤振（4428）：#1
\u MyAppState。sigIn（软件包：login/login_page.dart:149:17）E/flatter（4428）：#2__handleTap（包装：flatter/src/material/ink_well.省道：991:20）E/flatter（4428）：#3手势识别器。调用Callback（软件包：flatter/src/signatures/recognizer.dart:182:24）E/flatter（4428）：#4个TapGestureCongnizer。handleTapUp（套装：flatter/src/signatures/tap.dart:598:11）E/flatter（4428）：#5
BaseTapgestureRecognitor_检查（软件包：flift/src/signatures/tap.dart:287:5）E/flift（4428）：#6
BaseTapgestureRecognitor。handlePrimaryPointer（软件包：flatter/src/signatures/tap.dart:222:7）E/flatter（4428）：#7
PrimaryPointer检测识别器。handleEvent（套装：flatter/src/signatures/recognizer.dart:475:9）E/flatter（4428）：#8点外部_调度（程序包：flatter/src/signities/pointer_router.dart:93:12）E/flatter（4428）：#9 PointerRouter_调度事件路由。（软件包：flatter/src/signities/pointer_router.dart:138:9）E/flatter（4428）：#10_LinkedHashMapMixin。forEach（dart:collection patch/compact_hash.dart:397:8）E/flatter（4428）：#11点外部_dispatchEventToRoutes（包：flatter/src/signities/pointer_router.dart:136:18）E/flatter（4428）：#12点路由器。路线（包：flift/src/signatures/pointer_router.dart:122:7）E/flift（4428）：#13手势绑定。手风（套装：颤振/src/signatures/binding.dart:381:19）E/flatter（4428）：#14手势绑定。dispatchEvent（包：flatter/src/signatures/binding.dart:361:22）E/flatter（4428）：#15渲染器绑定。dispatchEvent（包：flatter/src/rendering/binding.dart:278:11）E/flatter（4428）：#16个手势绑定_立即（包装：颤振/src/手势/绑定。省道：316:7）E/颤振（4428）：#17手势绑定。手指头事件（包装：flatter/src/signatures/binding.dart:280:5）E/flatter（4428）：#18手势绑定_flushPointerEventQueue（包装：flatter/src/signatures/binding.dart:238:7）E/flatter（4428）：#19手势绑定_handlePointerDataPacket（包：flatter/src/signatures/binding.dart:221:7）E/flatter（4428）：#20 RootRunnary（dart:async/zone.dart:1202:13）E/flatter（4428）：#21 CustomZone。一元（dart:async/zone.dart:1097:19）E/flatter（4428）：#22 34; CustomZone。runUnaryGuarded（dart:async/zone.dart:1002:7）E/flatter（4428）：#23 _invoke1（dart:ui/hooks.dart:176:10）E/flatter（4428）：#24
PlatformDispatcher_dispatchPointerDataPacket（dart:ui/platform\u dispatcher.dart:276:7）E/flatter（4428）：\25
\u dispatchPointerDataPacket（dart:ui/hooks.dart:96:31）E/flatter（4428）：

Answer 1

你打错字了。使用“打印（e.message）；”而不是“打印（如按摩）；”在您的打印声明中：

catch(e){
        print(e.message);
      }