特定日期的本地通知

Question

我想在每周三和下午 1 点重复本地通知消息。

但是这段代码有什么问题呢？

编辑

- (void)applicationDidEnterBackground:(UIApplication *)application {
//Calendar
NSCalendar *gregCalendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSCalendarIdentifierGregorian];
NSDateComponents *dateCompnent = [gregCalendar components:NSCalendarUnitHour | NSCalendarUnitMinute | NSCalendarUnitWeekday fromDate:[NSDate date]];

[dateCompnent setHour:18];
[dateCompnent setMinute:03];
[dateCompnent setWeekday:3];

NSDate *date = [gregCalendar dateFromComponents:dateCompnent];

//Notification
UILocalNotification *notification = [[UILocalNotification alloc] init];
[notification setAlertBody:@"Test Notification"];
[notification setFireDate:date];
[notification setSoundName:@"sound.mp3"];
[notification setTimeZone:[NSTimeZone defaultTimeZone]];
[application setScheduledLocalNotifications:[NSArray arrayWithObject:notification]];

}

Answer 1

创建一个UIDatePicker 只是为了从NSDateComponents 创建一个UIDate 在这里有点奇怪。

您可以使用NSCalendar 中的dateFromComponents 方法：

NSDate *date = [gregCalendar dateFromComponents:dateCompnent];

另外，尝试将您的 NSDateComponents 更改为仅您将使用的组件：

NSCalendar *gregCalendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSCalendarIdentifierGregorian];
NSDateComponents *dateCompnent = [gregCalendar components:NSCalendarUnitHour | NSCalendarUnitMinute | NSCalendarUnitWeekday fromDate:[NSDate date]];

[dateCompnent setWeekday:4];
[dateCompnent setHour:13];
[dateCompnent setMinute:00];

编辑

不确定什么是有效的，但我猜是重复（因为我没有看到任何与重复 UILocalNotification 相关的代码）

查看UILocalNotification 的类引用，更具体地说是属性repeatInterval