颤振错误:错误:无法解析'package:firebase_messaging/firebase_messaging.dart‘中的包“firebase_messaging”

Question

我正在构建一个使用Firebase消息传递的Android应用程序。但是，在编译时会出现以下错误：

Error: Could not resolve the package 'firebase_messaging' in 
'package:firebase_messaging/firebase_messaging.dart'.

以下是相关的代码摘录：

Android\Build.Gradle:

buildscript {

    repositories {
        google()
    
    }

dependencies {
    classpath 'com.android.tools.build:gradle:3.5.0'
    classpath 'com.google.gms:google-services:4.3.3'
}
}
allprojects {
repositories {
    google()
    jcenter()
}

}

App\Build.Gradle:

dependencies {
implementation 'com.google.firebase:firebase-messaging:20.2.4'

}

pubspec.yaml:

dependencies:
  flutter:
    sdk: flutter
  shared_preferences: ^0.5.2
  firebase_core: ^0.2.5

Answer 1

您需要将firebase_messaging: ^7.0.0添加到pubspec.yaml中