iOS 10-仅首次调用didRegisterForRemoteNotificationsWithDevice [英] iOS 10 - didRegisterForRemoteNotificationsWithDevice only called the first time

问题描述

我遇到的问题是，在iOS 10上重新安装应用程序后，我第一次调用registerForRemoteNotifications时，didRegisterForRemoteNotificationsWithDevice仅在第一次调用时被调用.

I'm having a problem where didRegisterForRemoteNotificationsWithDevice only gets called the first time I call registerForRemoteNotifications after reinstalling the app, on iOS 10.

发生了什么:卸载该应用程序，然后从XCode调试运行该应用程序后，我在应用程序内弹出窗口上点击允许"，并收到了是否已注册带有设备令牌的远程通知"的日志消息！ ，我得到了一个设备令牌.这让我犹豫地认为我的证书/设置配置文件还可以.但是，此设备令牌似乎不适用于发送推送通知(可能是服务器上的一个单独问题)，并且在关闭应用程序并重新打开它之后，我仅看到已授予推送授权:1"和推送注册开始."但没有允许推送通知的弹出窗口，也没有didRegister回调/令牌.

What's happening: after uninstalling the app and then running the app in debug from XCode, I tap "allow" on the in-app popup and I do get my log message for "did register for remote notifications with device token!", and I get a device token. This makes me hesitantly think that my certificate / provisioning profiles are OK. However, this device token doesn't seem to work for sending push notifications (might be a separate issue on the server), and after closing the app and reopening it, I only see "Push authorization granted: 1" and "Push registration starting." but no popup to allow push notifications, and no didRegister callback/token.

我尝试查找解决方案，但找不到didRegister函数仅针对其第一次显示的任何人，因此我不确定是什么原因引起的.

I tried finding solutions, but I couldn't find anyone for whom the didRegister function only shows the first time so I'm not sure what could be causing it.

这是应用程序正在使用的代码:

This is the code that the app is using:

-(void)registerForNotifications
{
#if !TARGET_IPHONE_SIMULATOR
if(SYSTEM_VERSION_LESS_THAN(@"10.0")) {
    // This part is irrelevant, doesn't get called on iOS 10
    -> some code for push notifications
}
else {
    UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter];
    center.delegate = self;
    [center requestAuthorizationWithOptions:(UNAuthorizationOptionSound | UNAuthorizationOptionAlert | UNAuthorizationOptionBadge) completionHandler:^(BOOL granted, NSError * _Nullable error)
     {
         NSLog(@"push authorization granted: %d", granted);
         if(!error)
         {
             [[UIApplication sharedApplication] registerForRemoteNotifications];
             NSLog(@"Push registration starting.");
         }
         else
         {
             NSLog(@"Push registration FAILED");
             NSLog(@"ERROR: %@ - %@", error.localizedFailureReason, error.localizedDescription);
             NSLog(@"SUGGESTIONS: %@ - %@", error.localizedRecoveryOptions, error.localizedRecoverySuggestion);
         }  
     }];
}
#endif
}

-(void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDevice :(NSData *)deviceToken
{
    NSLog(@"did register for remote notifications with device!");
    [self handleNewDeviceToken:deviceToken];
}
-(void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(nonnull NSData *)deviceToken
{
    NSLog(@"did register for remote notifications with device token!");
    [self handleNewDeviceToken:deviceToken];
}

我希望这只是愚蠢的事/带有配置文件或证书，我对iOS开发还不太熟悉.如果您可以使用其他任何信息，请告诉我.

I'm hoping this is just something stupid on my side / with provisioning profiles or certificates, I'm not too experienced with iOS development yet. Do let me know if you could use any additional information.

编辑 好的，根本的问题是我的代码每次在调用register之前都调用unregisterForRemoteNotifications.显然，iOS10发生了更改，其中调用取消注册会导致注册在一段时间后无法正常工作.

EDIT Alright, the underlying issue was that my code was calling unregisterForRemoteNotifications every time before calling register. Apparently, iOS10 had a change where calling unregister causes register not to work for a bunch of time after.

推荐答案

这似乎是一个iOS 10错误，还有更多开发人员抱怨在这里遇到类似的问题:

This looks lie an iOS 10 bug and couple of more developers are complaining to experience similar issue here: https://forums.developer.apple.com/thread/63038.

据我所见，在您调用unregisterForRemoteNotifications之后，随后尝试调用registerForRemoteNotifications的尝试将不调用以下任何一种方法:

From what I see, the subsequent attempts to call registerForRemoteNotifications after you have called unregisterForRemoteNotifications will not invoke any of:

• didRegisterForRemoteNotificationsWithDeviceToken
• 也didFailToRegisterForRemoteNotificationsWithError

• didRegisterForRemoteNotificationsWithDeviceToken
• nor didFailToRegisterForRemoteNotificationsWithError

方法.基本上，您不会从iOS收到任何回调.

methods on AppDelegate. Basically you don't receive any callback from the iOS.

我目前知道的唯一解决方法是向您的Info.plist添加后台获取功能.我可以确认这为我解决了这个问题，但是您需要评估该解决方案是否对您有意义.

The only workaround that I am currently aware of, is to add background fetch capability to you Info.plist. I can confirm that this solved the issue for me, but you would need to evaluate whether that solution os plausible for you.

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