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大家好，我是目标 c 的新手，我试图在当前时间与名为newarr我已在该数组中添加时间的数组的时间匹配时触发通知。我希望通知应该根据数组中添加的时间自动触发。现在，只要当前时间与给定数组的时间匹配，就会触发通知，我就做了一个 if 语句。但应用程序工作正常，但只有一个通知被触发。请帮我随后触发通知。

这是我到目前为止所做的：

   #import "ViewController.h"

    @interface ViewController () {
    NSUserDefaults *defaults;
    NSString *todaysjustcurrentime;
    NSMutableString *todayjusthoursplit;
    NSMutableString *todayjustmintsplit;
    NSInteger days;
    }
   @end

   bool isGrantedNotificationAccess;
   @implementation ViewController

    - (void)viewDidLoad {
     [super viewDidLoad];
    isGrantedNotificationAccess = false;
    UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter];
    UNAuthorizationOptions options = UNAuthorizationOptionAlert+UNAuthorizationOptionSound;
    [center requestAuthorizationWithOptions:options completionHandler:^(BOOL granted, NSError * _Nullable error) {
    isGrantedNotificationAccess = granted;
    }];
    }

    - (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    }

    - (IBAction)notifyButton:(id)sender {
    if (isGrantedNotificationAccess) {
    NSLog(@"clicked");
    UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter];
    UNMutableNotificationContent *content = [[UNMutableNotificationContent alloc] init];
    content.title = @"Notify me";
    content.body = @"Its change of moment in your area";
    content.sound = [UNNotificationSound defaultSound];

    NSArray *newarr =  [[NSArray alloc] initWithObjects:@"18:39",@"18:40",@"18:38",nil];

    NSDateFormatter *dateFormatter=[[NSDateFormatter alloc] init];
    [dateFormatter setDateFormat:@"dd-MM-yyyy HH:mm"];
    // or @"yyyy-MM-dd hh:mm:ss a" if you prefer the time with AM/PM
    NSLog(@"here is new current date %@",[dateFormatter stringFromDate:[NSDate date]]);
    NSDate* now = [NSDate date];
    NSLog(@"here is now date new %@", now);

    NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
    [formatter setDateFormat:@"HH:mm"];
    NSDate *currentDate = [NSDate date];
    NSString *dateString = [formatter stringFromDate:currentDate];
    NSLog(@"here is the new new date %@", dateString);
    NSArray *todayjusttimearray = [dateString componentsSeparatedByString:@":"];
    NSLog(@"here is  today new new hour split %@", todayjusttimearray);
    todayjusthoursplit = todayjusttimearray[0];
    todayjustmintsplit = todayjusttimearray[1];
    NSLog(@"here is the  today new new hour splited new try %@", todayjusthoursplit);
    NSLog(@"here is the  today today new new mint splited nee try %@", todayjustmintsplit);


    NSDateComponents* date = [[NSDateComponents alloc] init];
    NSDateFormatter *f = [[NSDateFormatter alloc] init];
    [f setDateFormat:@"dd-MM-yyyy"];
    NSDate *currentdatehere = [NSDate date];
    NSString *cureentdatestr = [f stringFromDate:currentdatehere];
    NSDate *startDate = [f dateFromString:cureentdatestr];

    NSDateComponents *components = [[NSCalendar currentCalendar] components:NSCalendarUnitDay | NSCalendarUnitMonth | NSCalendarUnitYear fromDate:startDate];
    days = [components day];

    date.day = days; //getting current day of the month
    date.hour = todayjusthoursplit.intValue;
    date.minute = todayjustmintsplit.intValue + 1;
    NSLog(@"here is setup date %@", date);

   if ([newarr containsObject: dateString])
    {
        NSLog(@"here is the current time you know ");
     }
   else {
        NSLog(@"here is the current time you dont know ");

   }

    NSLog(@"this is time right now %@", dateString);

    if ([newarr containsObject: dateString])

    {
        NSLog(@"Yes its time to do something");
        UNCalendarNotificationTrigger* trigger = [UNCalendarNotificationTrigger
                                                  triggerWithDateMatchingComponents:date repeats:YES];
        UNNotificationRequest* request = [UNNotificationRequest
                                          requestWithIdentifier:@"Notify me" content:content trigger:trigger];
        [center addNotificationRequest:request withCompletionHandler:nil];
    }
    else {

            NSLog(@"here is the current time does not match ");

    }
  }
  }

  @end
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1 回答 1

1

对于您的逻辑，我不确定您要做什么，所以我不会谈论这个。要修复警告，只需按如下方式更改您的代码，然后您将在打印时获得正确的日期：

if ([TodayTimeNoteArray containsObject: todaysjustcurrentime])
{

    date.day = days; //getting current day of the month
    date.hour = todayjusthoursplit.intValue;
    date.minute = todayjustmintsplit.intValue;
于 2018-04-05T07:45:16.547 回答