Question

嗨，我是推送通知的新手，我正在开发一个项目，推送通知已被使用，我理解所有代码，但不是[[userInfo objectForKey：@“payload”] objectForKey：@“userId”]]，它可以在userinfo中存储值??

- (void) application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary*) userInfo {
**if ([self.profileManager.profile.userId isEqualToString:[[userInfo objectForKey:@"payload"] objectForKey:@"userId"]]**) {
    if (application.applicationState == UIApplicationStateActive) {
        UIRemoteNotificationType apnsType = [application enabledRemoteNotificationTypes];   
        if(apnsType != UIRemoteNotificationTypeNone) {
            if((apnsType & UIRemoteNotificationTypeAlert) != 0) {
                [self showNotificationAlert:userInfo];
            }

            if((apnsType & UIRemoteNotificationTypeBadge) != 0) {
                NSString* badge = [userInfo valueForKey:@"badge"];  
                application.applicationIconBadgeNumber = [badge intValue];
            }
        }
    } else {
        NSString* event = [[userInfo objectForKey:@"payload"] objectForKey:@"event"];
        if ([event isEqualToString:@"QUESTION_ANSWERED"]) {
            [self presentYouAsked];
        } else if ([event isEqualToString:@"QUESTION_ASKED"]) {
            [self presentFriendsAsked];
        }
    }
 }
}

Answer 1

userInfo字典是收到的推送通知数据的一部分。您引用的行提取另一个字典，与密钥＆＃34;有效负载＆＃34;相关联。从推送通知字典中，然后查找与密钥相关的值＆＃34; userid＆＃34;在那本字典中。

猜测＆＃34;如果＆＃34;声明它确定收到的推送通知是否适用于此设备上的当前用户。

在ios中推送通知问题

1 个答案: