本文介绍了未处理的承诺拒绝:this._next不是函数:@ angular/fire/messaging中的区域的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

限时删除!!

使用@angular/fire/messaging在前台接收Firebase推送通知时.方法是:

When I am receiving firebase push notifications in the foreground, by using @angular/fire/messaging. The method is:

  this.angularFireMessaging.messages.subscribe(
      (payload) => {
        console.log("new message received. ", payload);
        this.currentMessage.next(payload);
      })

让我分享我的完整代码: PushNotificationsService代码我已编写.

Let me share my complete code: PushNotificationsService Code I have written.

我的Angular-cli版本:

Angular CLI: 8.1.3
Node: 12.4.0
OS: linux x64
Angular: 8.1.3
... animations, cli, common, compiler, compiler-cli, core, forms
... language-service, platform-browser, platform-browser-dynamic
... router

Package                           Version
-----------------------------------------------------------
@angular-devkit/architect         0.801.3
@angular-devkit/build-angular     0.801.3
@angular-devkit/build-optimizer   0.801.3
@angular-devkit/build-webpack     0.801.3
@angular-devkit/core              8.1.3
@angular-devkit/schematics        8.1.3
@angular/fire                     5.3.0
@ngtools/webpack                  8.1.3
@schematics/angular               8.1.3
@schematics/update                0.801.3
rxjs                              6.4.0
typescript                        3.4.5
webpack                           4.35.2

让我分享我的package.json文件: package.json

Let me share my package.json files: package.json

当我在前台收到消息时,出现以下错误:

Unhandled Promise rejection: this._next is not a function ; Zone: <root> ; Task: ServiceWorkerContainer.addEventListener:message ; Value: TypeError: "this._next is not a function"
    next RxJS
    messageEventListener index.esm.js:1046
    step tslib.es6.js:99
    verb tslib.es6.js:80
    __awaiter tslib.es6.js:73
    ZoneAwarePromise Angular
    __awaiter tslib.es6.js:69
    messageEventListener index.esm.js:1035
    WindowController index.esm.js:876
    Angular 5
 next@http://localhost:4200/vendor.js:111323:18
./node_modules/@firebase/messaging/dist/index.esm.js/WindowController.prototype.messageEventListener/</<@http://localhost:4200/firebase-messaging.js:2418:34
step@http://localhost:4200/vendor.js:127272:23
verb/<@http://localhost:4200/vendor.js:127253:53
__awaiter/<@http://localhost:4200/vendor.js:127246:71
ZoneAwarePromise@http://localhost:4200/polyfills.js:3882:29
__awaiter@http://localhost:4200/vendor.js:127242:12
./node_modules/@firebase/messaging/dist/index.esm.js/WindowController.prototype.messageEventListener@http://localhost:4200/firebase-messaging.js:2407:71
WindowController/<@http://localhost:4200/firebase-messaging.js:2248:26
invokeTask@http://localhost:4200/polyfills.js:3397:31
runTask@http://localhost:4200/polyfills.js:3174:47
invokeTask@http://localhost:4200/polyfills.js:3471:34
invokeTask@http://localhost:4200/polyfills.js:4609:14
globalZoneAwareCallback@http://localhost:4200/polyfills.js:4635:27

任何帮助都是非常重要的! 代码:GITHUB REPO LINK

Any help is highly appreciable! CODE: GITHUB REPO LINK

我已经在GitHub代码中从firebase更新了我的密钥

I have update my secret key from firebase in the GitHub code

推荐答案

是的我意识到我使用了错误版本的"@ angular/fire":"^ 5.3.0",该版本与"firebase"不兼容:" ^ 7.6.2,位于我的package.json中.

Yes What I have realized that i had using the wrong version of "@angular/fire": "^5.3.0" which is not compatible with "firebase": "^7.6.2", in my package.json.

所以,我做了什么-

在firebase-messaging-sw.js或服务工作者文件中?

In firebase-messaging-sw.js or the service worker file?

importScripts('https://www.gstatic.com/firebasejs/5.0.0/firebase-app.js');importScripts('https://www.gstatic.com/firebasejs/5.0.0/firebase-messaging.js');

importScripts('https://www.gstatic.com/firebasejs/5.0.0/firebase-app.js');importScripts('https://www.gstatic.com/firebasejs/5.0.0/firebase-messaging.js');

应与package.json上的Firebase具有相同的版本

should have the same version with your firebase on package.json

"dependencies": {..."firebase": "^5.0.0","@angular/fire": "^5.0.0",...}

"dependencies": {..."firebase": "^5.0.0","@angular/fire": "^5.0.0",...}

它的工作就像一种魅力.

And it is working like a charm.

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09-06 23:12