意外值'FCM'由模块"AppModule"声明。请添加@Pipe/@Directive/@Component注释

Question

我正在尝试使用 FCM Cordova 插件来实现推送通知。然而，我正面临这个奇怪的问题。

我按照这个 URL https://ionicframework.com/docs/native/fcm/安装了它，并在 app.component.ts(我尝试使用的地方(和 app.module.ts 中正确导入了它

这是我的应用程序。

import { NgModule, ErrorHandler } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { IonicApp, IonicModule, IonicErrorHandler } from 'ionic-angular';
import {Facebook} from 'ionic-native';
import { StudentPage } from '../pages/student/student';
import { ContactPage } from '../pages/contact/contact';
import { TutorPage } from '../pages/tutor/tutor';
import { TabsPage } from '../pages/tabs/tabs';
import { LoginPage } from '../pages/login/login';
import { ProfilePage } from '../pages/profile/profile';
import { ChatPage } from '../pages/chat/chat';
import { UserChatPage } from '../pages/userchat/userchat';
import { NativeStorage } from '@ionic-native/native-storage';
import { StatusBar } from '@ionic-native/status-bar';
import { SplashScreen } from '@ionic-native/splash-screen';
import { GooglePlus } from '@ionic-native/google-plus';
import { IntroPage } from '../pages/intro/intro';
import { NotifyPage } from '../pages/notification/notification';
import { FCM } from '@ionic-native/fcm';
@NgModule({
declarations: [
ClassetteApp,
StudentPage,
ContactPage,
TutorPage,
TabsPage,
LoginPage,
ProfilePage,
ChatPage,
IntroPage,
UserChatPage,
NotifyPage,
FCM   
],
imports: [
BrowserModule,
IonicModule.forRoot(ClassetteApp,{tabsPlacement:'top',tabsLayout:'icon-right',tabsHideOnSubPages:true})    
],
bootstrap: [IonicApp],
entryComponents: [
ClassetteApp,
StudentPage,
ContactPage,
TutorPage,
TabsPage,
LoginPage,
ProfilePage,
ChatPage,
IntroPage,
UserChatPage,
NotifyPage
],
providers: [
StatusBar,
SplashScreen,
{provide: ErrorHandler, useClass: IonicErrorHandler},
Facebook,
NativeStorage,
GooglePlus,
FCM  
]
})
export class AppModule {}

这是我的包.json

{
"name": "myapp",
"version": "0.0.1",
"author": "Ionic Framework",
"homepage": "http://ionicframework.com/",
"private": true,
"scripts": {
"clean": "ionic-app-scripts clean",
"build": "ionic-app-scripts build",
"lint": "ionic-app-scripts lint",
"ionic:build": "ionic-app-scripts build",
"ionic:serve": "ionic-app-scripts serve",
"start": "node ./bin/www"
},
"dependencies": {
"@angular/common": "4.1.2",
"@angular/compiler": "4.1.2",
"@angular/compiler-cli": "4.1.2",
"@angular/core": "4.1.2",
"@angular/forms": "4.1.2",
"@angular/http": "4.1.2",
"@angular/platform-browser": "4.1.2",
"@angular/platform-browser-dynamic": "4.1.2",
"@ionic-native/core": "3.10.2",
"@ionic-native/facebook": "^3.10.2",
"@ionic-native/fcm": "^4.1.0",
"@ionic-native/google-plus": "^3.12.1",
"@ionic-native/native-storage": "^3.10.3",
"@ionic-native/splash-screen": "3.10.2",
"@ionic-native/status-bar": "3.10.2",
"@ionic/storage": "2.0.1",
"body-parser": "^1.17.2",
"cordova-android": "^6.2.3",
"cordova-plugin-console": "^1.0.5",
"cordova-plugin-device": "^1.1.4",
"cordova-plugin-facebook4": "^1.9.0",
"cordova-plugin-fcm": "^2.1.2",
"cordova-plugin-googleplus": "^5.1.1",
"cordova-plugin-nativestorage": "^2.2.2",
"cordova-plugin-splashscreen": "^4.0.3",
"cordova-plugin-statusbar": "^2.2.2",
"cordova-plugin-whitelist": "^1.3.1",
"express": "^4.15.3",
"ionic-angular": "3.3.0",
"ionic-native": "^2.5.1",
"ionic-plugin-keyboard": "^2.2.1",
"ionicons": "3.0.0",
"mongoose": "^4.11.4",
"morgan": "^1.8.2",
"rxjs": "5.1.1",
"serve-favicon": "^2.4.3",
"socket.io": "^2.0.3",
"socket.io-client": "^2.0.3",
"sw-toolbox": "3.6.0",
"zone.js": "0.8.11"
},
"devDependencies": {
"@ionic/app-scripts": "1.3.7",
"@ionic/cli-plugin-cordova": "1.6.2",
"@ionic/cli-plugin-ionic-angular": "1.4.1",
"ionic": "3.7.0",
"typescript": "2.3.3"
},
"description": "An Ionic project",
"cordova": {
"plugins": {
"cordova-plugin-console": {},
"cordova-plugin-device": {},
"cordova-plugin-splashscreen": {},
"cordova-plugin-statusbar": {},
"cordova-plugin-whitelist": {},
"ionic-plugin-keyboard": {},
"cordova-plugin-facebook4": {
"APP_ID": "3xxxxxxxx75862",
"APP_NAME": "myapp"
},
"cordova-plugin-googleplus": {
"REVERSED_CLIENT_ID": "4xsdsdxxxxxxx7dsgct91usuntkmomme1n8rq5i7oipq8.apps.googleusercontent.com"
},
"cordova-plugin-fcm": {}
},
"platforms": [
"android"
]
},
"main": "index.js",
"keywords": [
"server"
],
"license": "ISC"
}

注意：我尝试在app.module.ts的导入下添加FCM，但随后出现不同的错误

模块">

应用模块"导入的意外值"FCM"。请补充 @NgModule注释。

Answer 1

您不需要将 FCM 导入declarations数组，在那里您只需声明模块(如页面、管道、服务等(。所有插件必须仅在提供程序中声明。