ios - 每个星期二的本地通知重复间隔不起作用..我错过了什么？

Question

所以，我知道星期一是 = 2，现在当我说星期二是 = 3 时，它不会触发。

要么是我没有正确设置日期，要么是 calendar components 的 NSWeekCalendarUnit 和 repeatinterval 是错误的!

现在我的奇迹是: day components 是否等于 1 到 7 从星期日开始？

另外，它应该是一个 NSDayCalendarUnit 还是我做对了？

看看我的代码，看看你能不能修复它。谢谢

-(void) tuesday {   // every tuesday
NSCalendar *calendar = [NSCalendar currentCalendar];
calendar.timeZone = [NSTimeZone timeZoneWithName:@"GMT"];

NSDateComponents *components = [calendar components:NSWeekCalendarUnit fromDate:[NSDate date]];

components.day = 1;
components.hour   = 18;
components.minute = 55;
components.second = 45;

NSDate *fireDate = [calendar dateFromComponents:components];
NSLog(@"Tuesday %@", fireDate);

UILocalNotification *notif = [[UILocalNotification alloc]  init] ;
if (notif == nil)
    return;

notif.fireDate = fireDate;
notif.repeatInterval= NSWeekCalendarUnit ;
notif.soundName = @"ring.wav";
notif.alertBody = [NSString stringWithFormat: @"Hello World"] ;
[[UIApplication sharedApplication] scheduleLocalNotification:notif] ;
}

更新:

这是我得到的日志:

2014-01-19 18:55:09.258 daily notification test[14609:c07] Tuesday 0001-01-01 18:55:45 +0000

Answer 1

您的问题似乎是，您将组件添加到 NSDate，但没有设置相关的日期参数。要触发您的通知，您需要定义下周二的 NSDate。

希望这个例子对你有所帮助:

//first you have to check what's the current weekday
NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];

//Set timezone if needed
gregorian.timeZone  = [NSTimeZone timeZoneForSecondsFromGMT:0];

NSDateComponents *comps = [gregorian components:NSWeekdayCalendarUnit fromDate:[NSDate date]];
int currentWeekday = [comps weekday] ;
NSLog(@"currentWeekDay:%d", currentWeekday);


//After you know which weekday it is, you can check how many days to add till tuesday

int daysToAdd;
switch (currentWeekday) {
        //Sunday to Tuesday
    case 1:
        daysToAdd = 2;
        break;

        //Monday to Tuesday
    case 2:
        daysToAdd = 1;
        break;

        //Tuesday to Tuesday
    case 3:
        daysToAdd = 0;
        break;

        //Wednesday to Tuesday
    case 4:
        daysToAdd = 6;
        break;

        //Thursday to Tuesday
    case 5:
        daysToAdd = 5;
        break;

        //Thursday to Tuesday
    case 6:
        daysToAdd = 4;
        break;

    case 7:
        daysToAdd = 3;
        break;

    default:
        daysToAdd = 0;
        break;
}

NSDate *firetime = [[NSDate alloc] init];
NSDateComponents *timeCorrection = [[NSDateComponents alloc] init];
[timeCorrection setHour:18];
[timeCorrection setMinute:55];
[timeCorrection setSecond:45];
firetime = [[NSCalendar currentCalendar] dateByAddingComponents:timeCorrection toDate:firetime options:0];

NSDateComponents *offsetComponents = [[NSDateComponents alloc] init];
[offsetComponents setDay:daysToAdd];
firetime = [gregorian dateByAddingComponents:offsetComponents toDate:firetime options:0];

//this should be your fire date
NSLog(@"Next tuesday:%@",firetime);

希望这就是您正在寻找的，或者给您正确的提示。尚未测试。

问候， 扎拉卡斯