如何在iOS中设置闹钟？ [英] How to set an Alarm in iOS?

问题描述

我知道这个问题多次在 StackOverflow 上问过，但我无法在我的应用中设置闹钟，因为我对iOS很新？我正在按照本教程设置警报：

I know this question has asked many times on StackOverflow but i couldn't able to set alarm in my app because i am very new to iOS? I am following this tutorial to set an alarm:

使用iOS中的UILocalNotification设置提醒。

然而，它似乎对我不起作用。

However, it doesn't seems to be working for me.

我需要每天设置闹钟，让我们每天说 5.00 PM 。我不能使用日期选择器来选择时间。

I am in need to set alarm daily lets say 5.00 PM daily. I can't use date picker for choosing the time.

推荐答案

1. 首先在你的 xib ，（或代码）设置日期选择器模式：时间（默认为日期和时间）

1. First on your xib, (or code) set the date picker mode: Time (Default is date & time)

系统假定fireate是当前日期，时间是用户选择的时间。这不是问题，因为您设置了重复间隔，因此它将起作用。我测试了它。

The system assumes that the firedate is the current date, and the time is the time the user have chosen. This is not a problem because you set a repeat interval so it will work. I have tested it.

UILocalNotification *localNotif = [[UILocalNotification alloc] init];
[localNotif setFireDate:datePicker.date];
[localNotif setRepeatInterval:NSDayCalendarUnit];
[[UIApplication sharedApplication] scheduleLocalNotification:localNotif];

PS：这是一个好主意使用 NSDateComponents 类将秒设置为 0 ，以便将闹钟设置为在您的第一分钟响铃想。您可以查看：

PS: It would be a good idea to set the seconds to 0 using NSDateComponents class so as to set the alarm to ring at the first second of the minute you want. You can check the:

iOS中的本地通知。

您发布的教程关于如何做到这一点。

tutorial you posted on how to do this.

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