特定时间iPhone本地通知 [英] iPhone local notification at particular time

问题描述

我想每周晚上10点（不论国家/地区）发出通知。我需要使用timeZone吗？目前我使用下面的代码来解雇每周的通知，但是如何在晚上10点准确发布通知。

I want to fire a notification at 10PM(irrespective of country) every week. Do i need to use timeZone. Currently I am using below code to fire notification for every week but there how to fire notification exactly at 10PM.

NSDate *date = [NSDate date];
NSDate* myNewDate = [date dateByAddingTimeInterval:7*24*60*60];    
UILocalNotification *localNotification = [[UILocalNotification alloc] init];
localNotification.fireDate = myNewDate;
localNotification.timeZone = [NSTimeZone defaultTimeZone];
localNotification.repeatInterval = NSWeekCalendarUnit;
[[UIApplication sharedApplication] scheduleLocalNotification:localNotification];
[localNotification release];

推荐答案

我认为将你的fireDate设置为22:00在您想要获得通知的那一天（而不是从现在开始的一周）可以做您想要的。您可能希望使用 NSCalendar 来执行此操作。

I would think that setting your fireDate to 22:00 on the day you want to get the notification (rather than "a week from now") would do what you want. You'll probably want to use NSCalendar to do that.

NSDateComponents *dateComponents = [[NSDateComponents alloc] init];
NSDate *currentDate = [NSDate date];
NSDate *fireDate = nil;

[dateComponents setDay:3];  // ...or whatever day.
[dateComponents setHour:22];
[dateComponents setMinute:0];

fireDate = [gregorian dateByAddingComponents:dateComponents
                                      toDate:currentDate 
                                     options:0];

[localNotification setFireDate:fireDate];
[dateComponents release];

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