Question

我创建了一个localNotification来启动一条消息，并且没有在好时刻调用它。奇怪的是，当我将来约会时，它永远不会开火，但如果我过去约会，它会在应用程序启动时启动...

主要功能：

...
 NSDateComponents *comps = [NSDateComponents new];
    [comps setDay:28];
    [comps setMonth:02];
    [comps setYear:2017];
    [comps setHour:16];
    [comps setMinute:50];
    [comps setSecond:00];

    NSDate *alarmDate = [[NSCalendar currentCalendar] dateFromComponents:comps];
    NSDateFormatter *dateFormatter=[[NSDateFormatter alloc] init];
    [dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"];
    // or @"yyyy-MM-dd hh:mm:ss a" if you prefer the time with AM/PM

    NSDate *currentDate= [NSDate date];
    UILocalNotification *localNotification = [[UILocalNotification alloc] init];

    // Set the fire date/time
    [localNotification setFireDate:alarmDate];
    [localNotification setTimeZone:[NSTimeZone defaultTimeZone]];

    localNotification.applicationIconBadgeNumber=1;

    // Setup alert notification
    [localNotification setAlertAction:@"Open App"];
    // [localNotification setAlertBody:[randonQuotesDic objectForKey:@"Rajneesh"]];
    [localNotification setAlertBody:@"You had set a Local Notification on this time"];

    localNotification.soundName=UILocalNotificationDefaultSoundName;
    [localNotification setHasAction:YES];
    UIApplication *app=[UIApplication sharedApplication];
    [app scheduleLocalNotification:localNotification];
...

功能接收本地通知：

- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification
{
    UIApplicationState state = [application applicationState];
    // check state here

    if(state ==UIApplicationStateBackground ){

    }
    dispatch_async(dispatch_get_main_queue(), ^{

        UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Wake" message:notification.alertBody delegate:nil cancelButtonTitle:@"OK" otherButtonTitles: nil];
        [alertView show];
    });
}

它无法正常工作......

Answer 1

以下是答案：

你必须简单地授权它。您必须在主函数初始化localNotification之前放置那些行：

 UIUserNotificationType types = UIUserNotificationTypeBadge |
    UIUserNotificationTypeSound | UIUserNotificationTypeAlert;

    UIUserNotificationSettings *mySettings =
    [UIUserNotificationSettings settingsForTypes:types categories:nil];

    [[UIApplication sharedApplication] registerUserNotificationSettings:mySettings];

localNotification运行不正常。函数didReceiveLocalNotification不会在好时刻调用

1 个答案: