推送通知不在后台iOS中接收 [英] Push notification not receiving in background iOS

问题描述

我正在通过GCM在我的项目中推送通知。我的应用程序能够在前台接收通知，但不能在后台接收通知。

我在方法中收到一条消息

  func application（application ：UIApplication，didReceiveRemoteNotification userInfo：[NSObject：AnyObject]）
  

当应用程序处于前台时，没有得到任何调用方法

  func application（application：UIApplication，
 didReceiveRemoteNotification userInfo：[NSObject：AnyObject] ，
 fetchCompletionHandler处理程序：（UIBackgroundFetchResult） - >无效）
  

模式。

我在互联网上搜索了很长时间，才知道这是我收到的有效载荷格式的问题。我收到的有效载荷看起来像

[notification：{body：anything，title：any title}， priority：high，content_available：true，to：kcF23gblKok ....，collapse_key：do_not_collapse，from：7812 ....]

任何人都可以向我推荐正确的有效载荷格式吗？

解决方案

使用此有效内容

  {
aps：{
alert：Hello World，
sound：default
content-available：1 
} 
} 
  

已启用：

1应用程序处于前台状态

未显示系统警报

应用程序：didReceiveRemoteNotification：fetchCompletionHandler：被称为

<2>应用程序在后台

显示系统警报

应用程序：didReceiveRemoteNotification：fetchCompletionHandler：被称为

3A pp已暂停

应用程序状态更改为后台

显示系统警报

应用程序：didReceiveRemoteNotification：fetchCompletionHandler：被称为

4应用程序未运行，因为用户死亡

显示系统警报

没有回叫

I am doing push notification in my project through GCM. My Application is able to receive notification in foreground but not in background.

I receive a message inside the method

func application(application: UIApplication, didReceiveRemoteNotification userInfo: [NSObject : AnyObject])  

when the application is in foreground but I am not getting any call to the method

func application( application: UIApplication,
    didReceiveRemoteNotification userInfo: [NSObject : AnyObject],
    fetchCompletionHandler handler: (UIBackgroundFetchResult) -> Void)

when the application in background mode.

I had a long search in Internet and came to know that it's the problem with the payload format I receive. The payload I received looks like

[notification: {"body":"anything","title":"any title"}, priority: high, content_available: true, to: kcF23gblKok...., collapse_key: do_not_collapse, from: 7812....]

Can anyone suggest me the correct format of payload?

解决方案

use this payload

{
    "aps": {
        "alert": "Hello World",
        "sound": "default"
        "content-available" :1
    }
}

With content-available enabled:

1 App is in Foreground

No system alert shown

application:didReceiveRemoteNotification:fetchCompletionHandler: is called

2 App is in Background

System alert is shown

application:didReceiveRemoteNotification:fetchCompletionHandler: is called

3App is in Suspended

App state changes to Background

System alert is shown

application:didReceiveRemoteNotification:fetchCompletionHandler: is called

4 App is Not Running because killed by user

System alert is shown

No callback is called

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