如果应用程序已在运行，如何处理推送通知？

如果应用程序已运行，我们如何处理推送通知？如果应用程序正在运行（而不是推送通知警报），我想显示警报。只有在应用程序未运行时，才显示推送通知警报。如果应用程序已在运行，如何处理推送通知？

此外，如果我向APN发送有效载荷，如何使用取消按钮创建警报？

2009-10-12 Rahul Vyas

您可以实现application:didReceiveRemoteNotification:

这里是一个可能的示例代码：

- (void)application:(UIApplication *)application 
    didReceiveRemoteNotification:(NSDictionary *)userInfo 
{ 
    NSString *message = nil; 
    id alert = [userInfo objectForKey:@"alert"]; 
    if ([alert isKindOfClass:[NSString class]]) { 
    message = alert; 
    } else if ([alert isKindOfClass:[NSDictionary class]]) { 
    message = [alert objectForKey:@"body"]; 
    } 
    if (alert) { 
    UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Title" 
             message:@"AThe message." delegate:self 
          cancelButtonTitle:@"button 1" 
          otherButtonTitles:@"button", nil]; 
    [alertView show]; 
    [alertView release]; 
    }

来源

2009-10-12 14:12:40 notnoop

谢谢。 Apple对此很不方便。 – DGund 2013-01-17 02:54:39

@DGund真的吗？如果您尝试编写Android的推送（GCM/C2DM），您会发现它更加复杂。 – Raptor 2013-08-09 07:57:08

@notnoop代码有问题。应该用'if（message）'替换'if（alert）' – Raptor 2013-08-09 08:29:05

“警报”键不会在那里直属用户信息字典，你需要得到另一个字典名称为“APS “然后从”aps“字典中获得”alert“或”body“。

来源

2010-09-28 12:45:43

您可以检查UIApplication的状态。只要做到这样

- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo 
{ 

    UIApplicationState state = [application applicationState]; 
    if (state == UIApplicationStateActive) 
    { 

      UIAlertView *alert = [[[UIAlertView alloc] initWithTitle:@"xxx" message:yourMessage delegate:self cancelButtonTitle:@"Done" otherButtonTitles: @"Anzeigen", nil] autorelease]; 
      [alert setTag: 2]; 
      [alert show]; 
    } 
    else { 
     // Push Notification received in the background 
    } 
}

来源

2011-04-30 14:15:08 TomTom

很好的答案，谢谢。 – filou 2012-05-20 23:41:49

'yourMessage'没有被定义。您至少应该说明如何从'userInfo'获取消息。 – Raptor 2013-08-09 08:22:55

@ShivanRaptor - 我不认为这是问题的关键？这是做这件事的好方法 - 不是像检查userInfo是字符串还是字典那样的破解。 – Geebs 2013-08-18 03:17:27

迭代检查的3个级别的有效载荷

- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo { 

for (id key in userInfo) { 
    NSLog(@"key: %@, value: %@", key, [userInfo objectForKey:key]); 
    NSString *message = nil; 

NSDictionary *aps = [NSDictionary dictionaryWithDictionary:(NSDictionary *) [userInfo objectForKey:key] ]; 
    for (id key1 in aps){ 
     NSLog(@"key1: %@", key1); 
     id alert = [aps objectForKey:key1]; 
     if ([alert isKindOfClass:[NSDictionary class]]) { 
      message = [alert objectForKey:@"body"]; 
      NSLog(@"body: %@, value: %@", key1, message); 
      message = [alert objectForKey:@"loc-args"]; 
      NSLog(@"loc-args: %@, value: %@", key1, message); 
      NSArray *args = (NSArray *) [alert objectForKey:@"loc-args"] ; 
       for (id key2 in args){ 
        NSLog(@"key2: %@, value: ", key2); 
       } 
      message = [alert objectForKey:@"action-loc-key"]; 
      NSLog(@"action-loc-key: %@, value: %@", key1, message); 

     } 
     else if ([alert isKindOfClass:[NSArray class]]) { 
      for (id key2 in key1){ 
       NSLog(@"key2: %@, value: %@", key2, [key1 objectForKey:key2]); 
      } 
     } 
     else if([key1 isKindOfClass:[NSString class]]) { 
      message = [aps objectForKey:key1]; 
      NSLog(@"key1: %@, value: %@", key1, message); 
     } 

    } 
    }

}

结果是：

2012-01-27 20:38:09.599 SPush[4181:707] key: aps, value: { 
alert =  { 
    "action-loc-key" = Open; 
    body = test; 
    "loc-args" =   (
     1000, 
     2000 
    ); 
}; 
badge = 0; 
"content-available" = 10; 
sound = default; 
} 
2012-01-27 20:38:13.133 SPush[4181:707] key1: alert 
2012-01-27 20:38:13.134 SPush[4181:707] body: alert, value: test 
2012-01-27 20:38:13.137 SPush[4181:707] loc-args: alert, value: (
1000, 
2000 
) 
2012-01-27 20:38:13.138 SPush[4181:707] key2: 1000, value: 
2012-01-27 20:38:13.139 SPush[4181:707] key2: 2000, value: 
2012-01-27 20:38:13.140 SPush[4181:707] action-loc-key: alert, value: Open 
2012-01-27 20:38:13.141 SPush[4181:707] key1: sound 
2012-01-27 20:38:13.143 SPush[4181:707] key1: sound, value: default 
2012-01-27 20:38:13.144 SPush[4181:707] key1: badge 
2012-01-27 20:38:13.145 SPush[4181:707] key1: badge, value: 0 
2012-01-27 20:38:13.146 SPush[4181:707] key1: content-available 
2012-01-27 20:38:13.147 SPush[4181:707] key1: content-available, value: 10

来源

2012-01-27 15:56:18 Fahar

如果应用程序已在运行，如何处理推送通知？

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