不同时间的本地通知重复 [英] Local Notification repetation at different times

问题描述

我有一个应用程序可以生成祈祷时间(每天 5 次)，我想为 5 次祈祷创建通知，但问题是根据一些计算，时间每天都在变化.

I have an app that generates prayer times (5 times a day) i want to create notfication for the 5 prayers but the issue is the times change everyday based on some calculations.

计算是根据 GPS 位置完成的，因此当用户更改到另一个城市时，时间将相应更新.我将日期、时区、GPS 坐标输入到一个方法中，并以 (HH:mm) 格式获取给定日期/位置的祈祷时间值.现在我需要设置通知.我不确定在哪里设置它们.

The calculations are done based on GPS location so when the user changes to another city the times will be updated accordingly. I input the date,timezone, GPS coordinates into a method and I get prayer time values in (HH:mm) format for that given day/location. Now I need to setup the Notfications. I'm not sure where to set them up.

这是代码

#import "PrayerTimeViewController.h"
#import "PrayTime.h"

@implementation PrayerTimeViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
        UITabBarItem *tbi = [self tabBarItem];
        [tbi setTitle:NSLocalizedString(@"PrayerTimes", nil)];
        UIImage *i = [UIImage imageNamed:@"11-clock"];

        [tbi setImage:i];
        [i release];
    }
    return self;
}

- (void)didReceiveMemoryWarning
{
    // Releases the view if it doesn't have a superview.
    [super didReceiveMemoryWarning];

    // Release any cached data, images, etc that aren't in use.
}

#pragma mark - View lifecycle

- (void)viewDidLoad
{   

    [super viewDidLoad];

    // Do any additional setup after loading the view from its nib.

    UIColor *background = [[UIColor alloc] initWithPatternImage:[UIImage imageNamed:@"Madinah"]];
    self.view.backgroundColor = background;
    [background release];

    locationManager = [[CLLocationManager alloc]init];
    [locationManager setDelegate:self];
    [locationManager setDesiredAccuracy:kCLLocationAccuracyBest];
    [locationManager setDistanceFilter:kCLDistanceFilterNone];
    [locationManager startUpdatingLocation];
}

- (void)viewDidUnload
{
    [super viewDidUnload];
    // Release any retained subviews of the main view.
    // e.g. self.myOutlet = nil;
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    // Return YES for supported orientations
    return (interfaceOrientation == UIInterfaceOrientationPortrait);
}

- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
{
    NSTimeInterval t = [[newLocation timestamp] timeIntervalSinceNow];
    if (t < -180) {
        return;
    }

    PrayTime *prayerTime = [[PrayTime alloc]init];
    [prayerTime setCalcMethod:0];
    [prayerTime setFajrAngle:16];
    [prayerTime setIshaAngle:14];
    [prayerTime setAsrMethod:0];



    NSDate *curentDate = [NSDate date];
    NSCalendar* calendar = [NSCalendar currentCalendar];
    NSDateComponents* compoNents = [calendar components:NSYearCalendarUnit|NSMonthCalendarUnit|NSDayCalendarUnit fromDate:curentDate];     
    CLLocationCoordinate2D currLoc = [newLocation coordinate];


    NSMutableArray *prayerCal = [prayerTime getDatePrayerTimes:[compoNents year]  andMonth:[compoNents month] andDay:[compoNents day] andLatitude:currLoc.latitude andLongitude:currLoc.longitude andtimeZone:[[NSTimeZone localTimeZone] secondsFromGMT]/3600];
    [prayerTime release];

    [fajer setText:[prayerCal objectAtIndex:0]];
//    UILocalNotification *localNotification = [[UILocalNotification alloc] init];

    NSString *time = [prayerCal objectAtIndex:0];
    NSString *dates = [NSString stringWithFormat:@"%d-%d-%d %@",[compoNents year],[compoNents month],[compoNents day],time];


    NSDateFormatter *dateText = [[NSDateFormatter alloc]init];
    [dateText setDateFormat:@"yyyy-MM-dd HH:mm"];
    [dateText setTimeZone:[NSTimeZone timeZoneForSecondsFromGMT:[[NSTimeZone localTimeZone] secondsFromGMT]]];

    NSLog(@"%@",[dateText dateFromString:dates]);

    [shrooq setText:[prayerCal objectAtIndex:1]];

    [duhur setText:[prayerCal objectAtIndex:2]];

    [aser setText:[prayerCal objectAtIndex:3]];

    [maghreb setText:[prayerCal objectAtIndex:5]];

    [isha setText:[prayerCal objectAtIndex:6]];

    [prayerCal release];

}



@end

推荐答案

您可以使用 repeatInterval 参数重复您的五个通知，使它们每天在同一时间出现.很遗憾，如果不运行您的应用，就无法调整时间.

You can use the repeatInterval parameter to repeat your five notifications, making them appear at the same time every day. Unfortunately there's no way to adjust the time without running your app.

您可以在后台运行 GPS 应用程序，但仅设置一些计时器就会非常消耗电池电量.(这个后台进程确实是为 GPS 跟踪器应用程序设计的.我不确定 Apple 会如何将它用于稍微不同的目的.)

You can run a GPS app in the background, though that would be quite a drain on the battery just for setting some timers. (This background process is really designed for GPS tracker apps. I'm not sure what Apple would make of using it for a slightly different purpose.)

但最简单的方法是在应用启动时进行更新.当它启动时，您将获得当前通知(使用 UIApplication 的 scheduledLocalNotifications 属性)，如果它们不正确或过时则取消它们并创建新的通知.每个通知都有一个字典负载，您可以使用它来更轻松地识别您的警报.

But the easiest way would be just to update when the app is launched. When it launches you would get the current notifications (using the scheduledLocalNotifications property of UIApplication), cancel them if they're incorrect or out of date and create new ones. Each notification has a dictionary payload that you can use to make it easier to identify your alarms.

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