Ionic 6 - 无法在 Ionic Angular 应用程序中获取后台推送通知

Question

我有一个 Ionic Angular (v.6) Android 和 iOS 应用程序，我想向它们发送推送通知。我正在使用 Capacitor Push Notifications 库。我的电容版本是3.

当我的应用程序打开时，我可以从 pushNotificationReceived 侦听器获取通知。但是，当我的应用程序被杀死/后台时，我无法在系统托盘中收到任何通知。我都尝试过从 API 和 FireBase 控制台发送推送通知，但没有成功。我错过了什么？

constructor(private platform: Platform) {
    if (this.platform.is('ios') || this.platform.is('android')) {
        let permissions = await PushNotifications.checkPermissions();

        if (permissions.receive == "granted") {
            await this.setupFirebase();
        } else {
            let permissions = await PushNotifications.requestPermissions();

            if (permissions.receive == "granted") {
                await this.setupFirebase();
            } 
        }
    }
}

private async setupFirebase() {
    await PushNotifications.addListener("registration", (token) => {
        this.h.Toast(this.toastController, token.value);
    });

    await PushNotifications.addListener("registrationError", (error) => {
        this.h.Toast(this.toastController, error.error);
    });

    await PushNotifications.addListener("pushNotificationReceived", (notification) => {
        this.h.Toast(this.toastController, JSON.stringify(notification));
    });

    await PushNotifications.addListener("pushNotificationActionPerformed", (notification) => {
        this.h.Toast(this.toastController, JSON.stringify(notification));
    });

    PushNotifications.register().then(() => {
        PushNotifications.createChannel({id: "test", name: "test", importance: 5});
    });
}

Answer 1

我通过实现这两行解决了我的问题：

implementation "com.google.firebase:firebase-iid:21.1.0"
implementation "com.google.firebase:firebase-messaging:22.0.0"