为iOS应用程序每天设置84天的本地通知

Question

我正在开发具有显示本地通知功能的应用程序。

在那里，我设置了特定日期的本地通知，之后我想连续显示84天（12周）。为此我使用NSDayCalendarUnit重复类型。但这些提醒仍然在84天后显示出来。

我尝试使用- (void)applicationDidBecomeActive:(UIApplication *)application方法取消通知，但在84天之后需要至少与app进行一次互动才能知道系统日期。

请提供一些解决方案或指南。以下代码我用来设置提醒。

NSCalendar *calendar = [NSCalendar autoupdatingCurrentCalendar];


// Break the date up into components
NSDateComponents *dateComponents = [calendar components:( NSYearCalendarUnit | NSMonthCalendarUnit |  NSDayCalendarUnit )
                                               fromDate:cDate];
NSDateComponents *timeComponents = [calendar components:( NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit )
                                               fromDate:cDate];
// Set up the fire time
NSDateComponents *dateComps = [[NSDateComponents alloc] init];
[dateComps setDay:[dateComponents day]];
[dateComps setMonth:[dateComponents month]];
[dateComps setYear:[dateComponents year]];
[dateComps setHour:[timeComponents hour]];
// Notification will fire in one minute
[dateComps setMinute:[timeComponents minute]];
[dateComps setSecond:0];

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

    UILocalNotification *notif = [[cls alloc] init];
    notif.fireDate = [calendar dateFromComponents:dateComps];;
    notif.timeZone = [NSTimeZone defaultTimeZone];

    notif.alertBody =@"take your medicine";
    notif.alertAction = @"View";


    NSLog(@"SOUND=%d",[[NSUserDefaults standardUserDefaults] boolForKey:SWITCH_SOUND]);

    if([[NSUserDefaults standardUserDefaults] boolForKey:SWITCH_SOUND]||cId>=100)
    notif.soundName = UILocalNotificationDefaultSoundName;

    notif.repeatInterval=NSCalendarUnitDay;
    NSDictionary *userDict = [NSDictionary dictionaryWithObject:[NSString stringWithFormat:@"%d",cId]
                                                         forKey:NOTIFICATION_KEY];
    notif.userInfo = userDict;


    [[UIApplication sharedApplication] scheduleLocalNotification:notif];

    NSLog(@"Set reminder %d For Date =%@",cId,cDate);
}