Question

因此,我基本上试图制定一种能够不断向当地通知的信号。

到目前为止,我已经:

- (void)scheduleNotification {

    [reminderText resignFirstResponder];
    [[UIApplication sharedApplication] cancelAllLocalNotifications];

    Class cls = NSClassFromString(@"UILocalNotification");
    if (cls != nil) {

        UILocalNotification *notif = [[cls alloc] init];
        notif.fireDate = [datePicker date];
        notif.timeZone = [NSTimeZone defaultTimeZone];

        notif.alertBody = @"Your building is ready!";
        notif.alertAction = @"View";
        notif.soundName = UILocalNotificationDefaultSoundName;
        notif.applicationIconBadgeNumber = 1;

        NSInteger index = [scheduleControl selectedSegmentIndex];
        switch (index) {
            case 1:
                notif.repeatInterval = NSMinuteCalendarUnit;
                break;
            case 2:
                notif.repeatInterval = NSMinuteCalendarUnit*2;
                break;
            default:
                notif.repeatInterval = 0;
                break;
        }

        NSDictionary *userDict = [NSDictionary dictionaryWithObject:reminderText.text
                                                forKey:kRemindMeNotificationDataKey];
        notif.userInfo = userDict;

        [[UIApplication sharedApplication] scheduleLocalNotification:notif];
        [notif release];
    }
}

我试图这样做,我可以每2分钟(当我确定案件2时)和每1分钟(当我确定案件1时)收到通知。唯一的问题是...... 页: 1 我怎么会这样做,以便每2分钟通知它?

Answer 1

只有当你确定当地统一私法协会的重复间财产时,你才能使用NSCalendarUnit确定的日历单位。你可以不使用习俗单位或操纵这些单位,因此,你无法利用通知重复间隔财产做你想要做的事情。

为了每2分钟安排通知,你很可能在不同时间安排多次通知(2分钟)。您可以设立地方情报处,然后安排:

[[UIApplication sharedApplication] scheduleLocalNotification: localNotification];

then modify the fireDate property (by adding your repeat interval), and then schedule it again with the same code. You can repeat this in a loop however many times you need to repeat the notification.

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