为什么我没有收到本地通知。当我在目标 c 中为一周中的一天设置提醒时

Question

我正在开发一个应用程序，我需要在其中设置特定日期的提醒。我正在使用本地通知并查找所选本周日期的日期。

这是我的代码：

在viewController.m

    NSArray* components12 = [self.LblTime.text componentsSeparatedByString:@":"];
    NSString *Hours = [components12 objectAtIndex:0];
    NSString *Minutes =[components12 objectAtIndex:1];
    NSDate *currentDate  = [NSDate date];
    NSCalendar *gregorianCalendar = [[NSCalendar alloc]  initWithCalendarIdentifier:NSGregorianCalendar];
    [gregorianCalendar setTimeZone:[NSTimeZone timeZoneWithAbbreviation:@"GMT"]];
    NSDateComponents *components = [gregorianCalendar components:(NSYearCalendarUnit| NSMonthCalendarUnit
                                                                  | NSDayCalendarUnit| NSWeekdayCalendarUnit|NSWeekCalendarUnit)  fromDate:currentDate];
    NSLog(@"Current week day number %ld",(long)[components weekday]);
    NSLog(@"Current week number %ld",(long)[components week]);
    NSLog(@"Current month's day %ld",(long)[components day]);
    NSLog(@"Current month %ld",(long)[components month]);
    NSLog(@"Current year %ld",(long)[components year]);
    NSDateComponents *dt=[[NSDateComponents alloc]init];
    //Passing the Time (hours and minutes ) and Selected day with date
    [dt setHour: [Hours integerValue]];
    [dt setMinute:[Minutes integerValue]];
    [dt setSecond:0];
    [dt setWeek:[components week]];
    [dt setWeekday:selecteddayValue];/// set the week Selected ay from picker
    [dt setMonth:[components month]];
    [dt setYear:[components year]];
    NSDate *Date=[gregorianCalendar dateFromComponents:dt];// get the date of selected day of week
    NSLog(@"Sunday date :%@",Date);
    //Adding the reminder through Local notifiction
    [[UIApplication sharedApplication] cancelAllLocalNotifications];
    UILocalNotification *localNotification = [[UILocalNotification alloc] init];
    localNotification.fireDate =Date;
    localNotification.alertBody = @"Ready For Next Workout!";
    localNotification.soundName = UILocalNotificationDefaultSoundName;
    //    localNotification.applicationIconBadgeNumber = 1; // increment
    NSDictionary *infoDict = [NSDictionary dictionaryWithObjectsAndKeys:@"Object 1", @"Key 1", @"Object 2", @"Key 2", nil];
    localNotification.userInfo = infoDict;
    [[UIApplication sharedApplication] scheduleLocalNotification:localNotification];
    [self showAlert:@"Reminder set Successfully"];

在appDelegate：

 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
if ([application respondsToSelector:@selector(registerUserNotificationSettings:)]) {
    [application registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeAlert|UIUserNotificationTypeBadge|UIUserNotificationTypeSound categories:nil]];
}
// Handle launching from a notification
UILocalNotification *locationNotification = [launchOptions objectForKey:UIApplicationLaunchOptionsLocalNotificationKey];
if (locationNotification) {
    // Set icon badge number to zero
    application.applicationIconBadgeNumber = 0;
}
return YES;
}
- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification
{
// Set icon badge number to zero
   application.applicationIconBadgeNumber = 0;
}

现在我没有收到通知。任何人请帮忙，这将是非常满意的。

Answer 1

 if ([UIDevice currentDevice].systemVersion.floatValue >= 8.0)
{
    UIUserNotificationSettings *settings = [UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeBadge | UIUserNotificationTypeAlert | UIUserNotificationTypeSound categories:nil];
    [application registerUserNotificationSettings:settings];
}