应用未运行时如何处理远程通知

Question

如果我的应用程序在前台或后台运行，这工作正常。我正在接收通知并将其保存在本地数据库中。但是，如果应用程序从后台终止，它会收到远程通知，但不会调用以下方法。问题是如果我点击任何一个通知，只有该通知会保存在本地数据库中。

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

    [PFPush handlePush:userInfo];
    NSLog(@"Received notification: %@", userInfo);
    NSString *alertString = [[userInfo objectForKey:@"aps"]valueForKey:@"alert"];


    NSLog(@"%@",alertString);
    NSString *msgType = [userInfo objectForKey:@"messageType"];
    NSString *senderId = [userInfo objectForKey:@"senderId"];
    NSString *receverId = [userInfo objectForKey:@"receverId"];
    NSString *msg = [userInfo objectForKey:@"message"];
    NSString *timeStr = [userInfo objectForKey:@"Time"];
    NSLog(@"msg type%@ senderId %@ receverId %@ message %@",msgType,senderId,receverId,msg);


    if ([AppDelegate isNetworkReachable]){
        if ([msgType isEqualToString:@"CHAT"]) {
            Chatmessage *Cmsg=[[Chatmessage alloc]init];
            Cmsg.chat_date =timeStr;
            Cmsg.chat_image =@"";
            Cmsg.chat_message = msg;
            Cmsg.chat_Receiver_Id = receverId;
            Cmsg.chat_Sender_Id = senderId;
            NSLog(@"recid%@",Cmsg.chat_Receiver_Id);

            NSMutableArray *arryMsg = [[NSMutableArray alloc]init];
            arryMsg = [[DBModelNew database]getChatMessageBasedOnTime:receverId SenId:senderId time_stamp:timeStr message:msg];

            if (arryMsg.count == 0) {
                [[DBModelNew database]insertmsg:Cmsg];
            }

            [[NSNotificationCenter defaultCenter]postNotificationName:@"receivedmessage" object:nil];

            chatHistory *chatObj = [[chatHistory alloc]init];
            chatObj.chat_meta_id = [NSString stringWithFormat:@"%@",senderId];
            chatObj.last_send_message = msg;
            NSDateFormatter* dateFormatter = [[NSDateFormatter alloc] init];
            dateFormatter.dateFormat = @"yyyy-MM-dd HH:mm:ss";
            NSString *str=[dateFormatter stringFromDate:[NSDate date]];
            chatObj.last_time_stamp = [self dateformat:str];
            PFQuery *query = [PFUser query];
            [query whereKey:@"objectId" equalTo:senderId];
            [query findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
                if (!error) {
                    for (NSDictionary *dict in objects) {

                        [[dict objectForKey:@"ProfilePic"] getDataInBackgroundWithBlock:^(NSData *data, NSError *error) {

                            if (!error) {

                                if (data) {
                                    UIImage *image = [UIImage imageWithData:data];
                                    if (image) {
                                        chatObj.fndimage = image;
                                        chatObj.name = [dict objectForKey:@"name"];
                                        [[DBModelNew database]insertChat:chatObj];
                                        [[NSNotificationCenter defaultCenter]postNotificationName:@"receivedNewMessage" object:nil];                            
                                    }
                                }
                            }

                        }];
                    }
                }
            }];

        }
    }
}

Answer 1

根据 Apple 文档，如果用户硬关闭应用程序，它不会调用该方法。

此外，如果您启用了远程通知后台模式， 系统启动您的应用程序（或将其从挂起状态唤醒） 并在收到远程通知时将其置于后台状态 到达。 但是，如果出现以下情况，系统不会自动启动您的应用 用户已强制退出。 在这种情况下，用户必须重新启动 您的应用程序或在系统尝试启动之前重新启动设备 您的应用会再次自动自动运行。

Answer 2

如果您想从viewDidLoad 启动特定的有效负载字典，那么您只需调用以下命令：

UILocalNotification *localNotif =
[launchOptions objectForKey:UIApplicationLaunchOptionsLocalNotificationKey];

这样你就可以得到userInfo：

NSString *msgType = [localNotif objectForKey:@"messageType"];

现在你可以采取相应的行动了。这仅适用于您在标题中所述的情况。当应用程序未“运行”（终止）时