为 Flutter 设置 Firebase

Question

我一直在 Firebase 上设置项目。该应用程序已为 iOS 和 Android 设置。它适用于 Flutter 运行但它没有连接到 Firebase

Main.dart中的代码如下

import 'package:flutter/material.dart';import 'package:footballcrazyquiz/routes.dart';import 'package:footballcrazyquiz/theme.dart';import 'package:firebase_core/firebase_core.dart';import 'package:provider/provider.dart';import 'package:footballcrazyquiz/shared/shared.dart';import 'package:footballcrazyquiz/services/services.dart';

void main() {WidgetsFlutterBinding.ensureInitialized();runApp(const App());}

class App extends StatefulWidget {const App({super.key});

@overrideState<App> createState() => _AppState();}class _AppState extends State<App> {final Future<FirebaseApp> _initialization = Firebase.initializeApp();

@overrideWidget build(BuildContext context) {return FutureBuilder(// Initialize FlutterFire:future: _initialization,builder: (context, snapshot) {// Check for errorsif (snapshot.hasError) {

    }

    // Once complete, show your application
    if (snapshot.connectionState == ConnectionState.done) {
     return StreamProvider(
        create: (_) => FirestoreService().streamReport(),
        catchError: (_, err) => Report(),
        initialData: Report(),
        child: MaterialApp(
          debugShowCheckedModeBanner: true,
          routes: appRoutes,
          theme: appTheme
        ),
      );
    }

    // Otherwise, show something whilst waiting for initialization to complete
    return const MaterialApp(home: LoadingScreen());
  },
);

}}

我也无法在终端中生成 Android 登录报告，我需要 SHA 1。异常在 Android/app/build.gradle 第 28 行，如下所示

def localProperties = new Properties()def localPropertiesFile = rootProject.file('local.properties')if (localPropertiesFile.exists()) {localPropertiesFile.withReader('UTF-8') { reader ->localProperties.load(reader)}}

def flutterRoot = localProperties.getProperty('flutter.sdk')if (flutterRoot == null) {throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")}

def flutterVersionCode = localProperties.getProperty('flutter.versionCode')if (flutterVersionCode == null) {flutterVersionCode = '1'}

def flutterVersionName = localProperties.getProperty('flutter.versionName')if (flutterVersionName == null) {flutterVersionName = '1.0'}

apply plugin: 'com.android.application'apply plugin: 'kotlin-android'apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"

android {compileSdkVersion flutter.compileSdkVersionndkVersion flutter.ndkVersion

compileOptions {
    sourceCompatibility JavaVersion.VERSION_1_8
    targetCompatibility JavaVersion.VERSION_1_8
}

kotlinOptions {
    jvmTarget = '1.8'
}

sourceSets {
    main.java.srcDirs += 'src/main/kotlin'
}

defaultConfig {
    // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
    applicationId "io.eddiegamble.footballcrazyquiz"
    minSdkVersion 19
    targetSdkVersion 31.0.1
    versionCode flutterVersionCode.toInteger()
    versionName flutterVersionName
    multidex true
    
}

buildTypes {
    release {
        // TODO: Add your own signing config for the release build.
        // Signing with the debug keys for now, so `flutter run --release` works.
        signingConfig signingConfigs.debug
    }
}

}

flutter {source '../..'}

dependencies {implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"implementation 'com.android.support:multidex:1.0.3'implementation platform('com.google.firebase:firebase-bom:31.1.0')implementation 'com.google.firebase:firebase-analytics'}apply plugin: 'com.google.gms.google-services'

感谢您阅读

Answer 1

尝试以下操作：

Future<void> main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await Firebase.initializeApp(
    options: DefaultFirebaseOptions.currentPlatform,
  );
  runApp(const MyApp());
}