当应用在后台运行时，Google Firebase远程通知不会弹出 [英] Google Firebase remote notifications not popping up when app is running in background

问题描述

我正在使用Google Firebase向用户发送通知。当时我试图发送通知单个设备（我的）。

遇到接收通知时出现问题 - 而我的应用程序正在后台横幅中运行时不会显示。但是，如果我打开我的应用程序，方法didReceiveRemoteNotification：触发我的警报视图：

   - （空）应用程序：（UIApplication的*）应用程序didReceiveRemoteNotification：（的NSDictionary *）USERINFO 
 fetchCompletionHandler：（无效（^）（UIBackgroundFetchResult））completionHandler {
 
 UIAlertView中*警报= [[UIAlertView中的alloc] initWithTitle：用户信息[@ 通知] [@body] 
 message：@More info ...
 delegate：self 
 cancelButtonTitle：@Cancel
 otherButtonTitles：@Open，nil] ; 
 [alert show]; 
 
 
 
 
 
 
 
但是，由于它是在Google Firebase文档中编写的，因此此方法触发应用程序打开后，所以它是有道理的。
 
 
所以消息传递到我的设备，如果应用程序在后台，我不能触发通知横幅。
 
 
 
我读了关于将消息优先级设置为高和自定义数据密钥内容 - 可用于1，但没有运气。
 
 
 
我在代码中缺少其他东西来触发通知？ 
我已经使用Google Firebase Guide实现了这个功能。
我开始再次下云端通讯阅读谷歌文档火力地堡我发现这个：
 
在setAPNSToken：type：中提供您的APNs令牌和令牌类型。确保正确设置类型的值：沙箱环境的FIRInstanceIDAPNSTokenTypeSandbox或生产环境的FIRInstanceIDAPNSTokenTypeProd。如果您没有设置正确的类型，消息不会传递到您的应用 
 
 
 
所以我错过了把这个声明方法：didRegisterForRemoteNotificationsWithDeviceToken：
   - （无效）应用：（UIApplication的*）申请
 didRegisterForRemoteNotificationsWithDeviceToken：（NSData的*）deviceToken {
 
 [FIRInstanceID instanceID] setAPNSToken：deviceToken type：FIRInstanceIDAPNSTokenTypeSandbox]; 
 
 
 
 
 
 
 
不要忘记把type：FIRInstanceIDAPNSTokenTypeProd生产。
 
I am using Google Firebase to send notifications to users. At the time I am trying to send notification to single device (mine). 

Having a problem with receiving notifications - while my app is running in background banner not appears. But if I open my app, method didReceiveRemoteNotification: triggers my alert view:
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo
fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler {

UIAlertView *alert = [[UIAlertView alloc] initWithTitle:userInfo[@"notification"][@"body"]
                                                message:@"More info..."
                                               delegate:self
                                      cancelButtonTitle:@"Cancel"
                                      otherButtonTitles:@"Open",nil];
[alert show];

}
But as it's written in Google Firebase documentation, this method triggers after app opens, so it make sense.

So message is delivered to my device, I just can't trigger a notification banner if app is in background.

I read about setting message priority to High and custom data key content-available to 1, but no luck.

Am I missing something else in my code to trigger notification?
I have done this with Google Firebase Guide to implement Notifications.
解决方案
I resolved my problem. I started reading documentation on Google Firebase once again and under Cloud Messaging I found this:

Provide your APNs token and the token type in setAPNSToken:type:. Make sure that the value of type is correctly set: FIRInstanceIDAPNSTokenTypeSandbox for the sandbox environment, or FIRInstanceIDAPNSTokenTypeProd for the production environment. If you don't set the correct type, messages are not delivered to your app.

So I missed to put this statement in method :didRegisterForRemoteNotificationsWithDeviceToken:
 - (void)application:(UIApplication *)application
didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken {

[FIRInstanceID instanceID] setAPNSToken:deviceToken type:FIRInstanceIDAPNSTokenTypeSandbox];

}
Don't forget to put type: "FIRInstanceIDAPNSTokenTypeProd" for production.

                        
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