第一次没有收到推送通知

Question

我正在从节点服务器向 iPhone 和 Android 发送推送通知。它已成功发送到 APNS/GCM 并成功接收到移动设备的通知。但是，在 iPhone 6 中，推送通知在收到通知后并不是第一次收到。它发生在以下阶段：

正在安装应用程序并首次打开。
如果应用程序不再使用。

提前致谢..

Answer 1

有时可能不会收到推送通知。
代码是为所有场合写的？（应用关闭/活动/非活动/后台）
该代码针对相同的场合进行了测试？

Answer 2

Apple 在 Local and Push Notification Programming Guide and Troubleshooting Push Notifications

中说

Delivery of notifications is a “best effort”, not guaranteed. It is not intended to deliver data to your app, only to notify the user that there is new data available.

更新：

问题是 Apple 在无法处理消息时会关闭连接。因此，如下更新节点推送通知 server.js 中的代码，它运行良好：

var connectCallback = function (err) {
  // gracefully handle auth problems
  if (err && err.name === 'GatewayAuthorizationError') {
    console.log('Authentication Error: %s', err.message);
    process.exit(1);
  }

  // handle any other err (not likely)
  else if (err) {
    throw err;
  }

  // it worked!
  var env = agent.enabled('sandbox')
    ? 'sandbox'
    : 'production';

  console.log('apnagent [%s] gateway connected', env);
};

agent.connect(connectCallback);

setInterval(function(){
  agent.close(function(param1){
    agent.connect(connectCallback);
  });
}, 20 * 60 * 1000);

Answer 3

我遇到了同样的问题，我通过以下方式解决了它：-

在 didFinishLaunchingWithOptions 方法中写这个

if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0) {
            [[UIApplication sharedApplication] registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:(UIUserNotificationTypeSound | UIUserNotificationTypeAlert | UIUserNotificationTypeBadge) categories:nil]];
            [[UIApplication sharedApplication] registerForRemoteNotifications];
        } else {
            [[UIApplication sharedApplication] registerForRemoteNotificationTypes:UIRemoteNotificationTypeAlert | UIRemoteNotificationTypeSound | UIRemoteNotificationTypeBadge];
        }

它将向用户触发权限警报。如果他允许，则在成功方法中发送设备令牌：-

#pragma PushNotification delegation

- (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken {

    NSString *device = [deviceToken description];
    device = [device stringByTrimmingCharactersInSet:[NSCharacterSet characterSetWithCharactersInString:@"<>"]];
    device = [device stringByReplacingOccurrencesOfString:@" " withString:@""];
    NSLog(@"My deviceToken is: %@", device);

    NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults];
    [prefs setObject:device forKey:@"deviceToken"];

     // Now send device token to server
}

第一次没有收到推送通知

Push notification is not receiving very first time

push-notification

apple-push-notifications

node.js

ios