ios - iPhone 通知中的旧消息未删除尝试

Question

我在 ionic 3 应用程序中使用推送插件，一切正常，但从我的服务器端，我们一次发送一条消息，并且我正在向 iPhone 接收消息，但旧消息应该被新消息覆盖，或者一旦我们收到新消息消息然后旧消息会自动清除..我找不到与此相关的任何内容，请任何人帮助我解决这个问题。

 const options: PushOptions = {
 android: {},
 ios: {
   alert: 'true',
   badge: true,
   sound: 'false'
  },
 windows: {},
 browser: {
     pushServiceURL: 'http://push.api.phonegap.com/v1/push'
  }
};

const pushObject: PushObject = this.push.init(options);


pushObject.on('notification').subscribe((notification: any) => 
console.log('Received a notification', notification));

Answer 1

听起来您没有发送配置为“可折叠”的消息。默认情况下，每条消息都是不同的，不会覆盖最后一条消息。 FCM 很好地记录了这一点:

https://firebase.google.com/docs/cloud-messaging/concept-options

Non-collapsible and collapsible messages

A non-collapsible message denotes that each individual message is delivered to the device. A non-collapsible message delivers some useful content, as opposed to a collapsible message like a content-free "ping" to the mobile app to contact the server to fetch data.

...

A collapsible message is a message that may be replaced by a new message if it has yet to be delivered to the device.

...

或者，如果您不使用 FCM，here's a reference直接访问 Apple 的 APN 文档。

To allow the coalescing of similar notifications, you can include a collapse identifier within a notification request. Normally, when a device is online, each notification request that you send to APNs results in a notification delivered to the device. However, when the apns-collapse-id key is present in your HTTP/2 request header, APNs coalesces requests whose value for that key is the same. For example, a news service that sends the same headline twice could use the same collapse identifier value for both requests. APNs would then coalesce the two requests into a single notification for delivery to the device. For details on the apns-collapse-id key

更新一些代码详细信息:

public void sendMessage(String title, String body, Map<String, String> data, boolean shouldCollapse) {          

        PlatformConfiguration platformConfig = new PlatformConfiguration(30);

        if (shouldCollapse)
            messageBuilder.setAndroidConfig(platformConfig.getCollapsibleAndroidConfig("test")).setApnsConfig(platformConfig.getCollapsibleApnsConfig("test"));

...

    public ApnsConfig getCollapsibleApnsConfig(String collapseKey) {

        return getCoreApnsConfig().putHeader("apns-collapse-id", collapseKey)
                .setAps(getNonCollapsibleApsBuilder().setCategory(collapseKey).setThreadId(collapseKey).build()).build();
    }

    public AndroidConfig getCollapsibleAndroidConfig(String collapseKey) {

        return getCoreAndroidConfig().setCollapseKey(collapseKey)
                .setNotification(
                        getNonCollapsibleAndroidNotificationBuilder().setTag(collapseKey).build()).build();
    }