我在一个角度项目上有一个奇怪的错误，这些是代码片段
@Injectable()
export class FirebaseMessagingService {
public tokenReceivedEmitter: any = new EventEmitter();
public messageReceivedEmitter: any = new EventEmitter();
constructor(
private angularFireMessaging: AngularFireMessaging) {
this.angularFireMessaging.messaging.subscribe(
(messaging) => {
messaging.onMessage = messaging.onMessage.bind(messaging);
messaging.onTokenRefresh = messaging.onTokenRefresh.bind(messaging);
}
);
}
/**
* request permission for notification from firebase cloud messaging
*
* @param userId userId
*/
requestPermission(userId) {
this.angularFireMessaging.requestToken.subscribe(
(token) => {
this.tokenReceivedEmitter.emit({status: true, result: token});
},
(err) => {
this.tokenReceivedEmitter.emit({status: false, result: err});
}
);
}
/**
* hook method when new notification received in foreground
*/
receiveMessage() {
this.angularFireMessaging.messages.subscribe(
(payload) => {
this.messageReceivedEmitter.emit(payload);
});
}
这就是 firebase 消息服务，它在收到推送通知时发出令牌接收事件。
现在在组件中
ngOnInit(){
// Subscribing to firebase token receive
this.firebaseTokenSubscription = this.messagingService.tokenReceivedEmitter.subscribe(
(message) => {
if (message.status) {
const token = message.result;
this.sendNotificationToken(token);
} else {
this.snackBar.open(message.result, this.translate.instant('CLOSE')
{duration:3000});
}
}
);
}
开满天机
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