Question

推送通知仅在应用程序处于后台时才有效，但是当它从背景中删除时它也无效，当它返回到后台时，我没有收到任何推送通知。我不得不删除应用程序并从testflight再次下载以便能够接收推送通知。

这是代码

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

#if !TARGET_IPHONE_SIMULATOR
   //Do stuff that you would do if the application was not active

    NSLog(@"remote notification: %@",[userInfo description]);
    NSDictionary *apsInfo = [userInfo objectForKey:@"aps"];
    NSLog(@"Aps Info : %@",apsInfo);


    NSString *alert = [apsInfo objectForKey:@"alert"];
    NSLog(@"Received Push Alert: %@", alert);

    NSString *sound = [apsInfo objectForKey:@"sound"];
    NSLog(@"Received Push Sound: %@", sound);
    AudioServicesPlaySystemSound(kSystemSoundID_Vibrate);

    NSString *badge = [apsInfo objectForKey:@"badge"];
    NSLog(@"Received Push Badge: %@", badge);
    application.applicationIconBadgeNumber = [[apsInfo objectForKey:@"badge"] integerValue];


#endif
}

- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo fetchCompletionHandler:(void (^)(UIBackgroundFetchResult result))completionHandler

{
    NSInteger pushCode = [userInfo[@"pushCode"] integerValue];
    NSLog(@"Silent Push Code Notification: %i", pushCode);
    NSDictionary *aps = userInfo[@"aps"];
    NSString *typeID = userInfo[@"type_id"];

    NSString *alertMessage = aps[@"alert"];
    NSLog(@"Type ID %@",typeID);

    NSArray * array =[typeID componentsSeparatedByString:@","];

    NSLog(@"Item %@,Item2 %@",[array objectAtIndex:0],[array objectAtIndex:1]);
    [self typeID:[array objectAtIndex:0] userID:[array objectAtIndex:1] message:alertMessage];
    NSLog(@"apss%@,alert%@,%@",aps,alertMessage,userInfo);

}

Answer 1

问题在于方法：

- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo fetchCompletionHandler:(void (^)(UIBackgroundFetchResult result))completionHandler 
{
}

你应该用这种方法“捕捉”到达后台的通知：

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

fetchCompletionHandler 方法用于接收“静默”推送消息，该消息在 didReceiveRemoteNotification 之前被调用（如果已实现）。

推送通知仅适用一次

1 个答案: