针对特定日期重复本地通知 iOS 10

Posted 2023-02-24

【中文标题】针对特定日期重复本地通知 iOS 10

【英文标题】：Repeat local notification for specific date iOS 10

【发布时间】：2017-05-11 11:54:40

【问题描述】：

我有在特定日期触发的本地通知，例如下周一。我想要的是，每周一重复这个。如何做到这一点？我目前使用的代码：

 if(SYSTEM_VERSION_GRATERTHAN_OR_EQUALTO(@"10.0")) 

        /* Trigger date */


        NSDate *date = [[NSDate date] mt_dateSecondsAfter:15];
        NSDateComponents *triggerDate = [[NSCalendar currentCalendar]
                                         components:NSCalendarUnitYear +
                                         NSCalendarUnitMonth + NSCalendarUnitDay +
                                         NSCalendarUnitHour + NSCalendarUnitMinute +
                                         NSCalendarUnitSecond fromDate:date];

        UNCalendarNotificationTrigger *trigger = [UNCalendarNotificationTrigger triggerWithDateMatchingComponents:triggerDate
                                                                                                          repeats:NO];

        /* Set notification */

        UNMutableNotificationContent *content = [UNMutableNotificationContent new];
        content.body = @"Время вставать с Ретро ФМ";
        content.categoryIdentifier = NotificationCategoryIdent;
        content.sound = [UNNotificationSound defaultSound];
        NSString *identifier = @"LocalNotification";
        UNNotificationRequest *request = [UNNotificationRequest requestWithIdentifier:identifier
                                                                              content:content
                                                                              trigger:trigger];

        UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter];
        [center addNotificationRequest:request withCompletionHandler:^(NSError * _Nullable error) 
            if (error != nil) 
                NSLog(@"Something went wrong: %@",error);
            
        ];
    
    else 

        // Code for old versions

        UILocalNotification *notification = [[UILocalNotification alloc] init];
        [notification setAlertBody:@"Время вставать с Ретро ФМ"];
        [notification setCategory:NotificationCategoryIdent];
        [[UIApplication sharedApplication] presentLocalNotificationNow:notification];
    

【问题讨论】：

这段代码有什么问题？

只是重复：NO 到重复：YES

@Koen 它的工作，我希望每个星期一/月/日重复一次

您必须从日期组件每周设置一次

repeatInterval,NSCalendarUnitWeekday 会帮助你

【参考方案1】：

你需要在你的代码中替换它

UNCalendarNotificationTrigger *trigger = [UNCalendarNotificationTrigger triggerWithDateMatchingComponents:triggerDate
                                                                                                          repeats:YES];

【讨论】：

它的重复日期和触发日期究竟是什么？开火日期之后的下一个日期？

【参考方案2】：

更改您的代码：

if(SYSTEM_VERSION_GRATERTHAN_OR_EQUALTO(@"10.0")) 

        /* Trigger date */


        NSDate *date = [[NSDate date] mt_dateSecondsAfter:15];
        NSDateComponents *triggerDate = [[NSCalendar currentCalendar]
                                         components:NSCalendarUnitYear +
                                         NSCalendarUnitMonth + NSCalendarUnitDay +
                                         NSCalendarUnitHour + NSCalendarUnitMinute +
                                         NSCalendarUnitSecond fromDate:date];

        UNCalendarNotificationTrigger *trigger = [UNCalendarNotificationTrigger triggerWithDateMatchingComponents:triggerDate
                                                                                                          repeats:YES];

        /* Set notification */

        UNMutableNotificationContent *content = [UNMutableNotificationContent new];
        content.body = @"Время вставать с Ретро ФМ";
        content.categoryIdentifier = NotificationCategoryIdent;
        content.sound = [UNNotificationSound defaultSound];
        NSString *identifier = @"LocalNotification";
        UNNotificationRequest *request = [UNNotificationRequest requestWithIdentifier:identifier
                                                                              content:content
                                                                              trigger:trigger];

        UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter];
        [center addNotificationRequest:request withCompletionHandler:^(NSError * _Nullable error) 
            if (error != nil) 
                NSLog(@"Something went wrong: %@",error);
            
        ];
    
    else 

        // Code for old versions

        UILocalNotification *notification = [[UILocalNotification alloc] init];
        [notification setAlertBody:@"Время вставать с Ретро ФМ"];
        [notification setCategory:NotificationCategoryIdent];
        [notification setRepeatCalendar:NSCalendarUnitWeekday];
        [[UIApplication sharedApplication] presentLocalNotificationNow:notification];
    

【讨论】：

有什么区别？

UNCalendarNotificationTrigger *trigger = [UNCalendarNotificationTrigger triggerWithDateMatchingComponents:triggerDate repeats:YES];

和[通知集RepeatCalendar:NSCalendarUnitWeekday];

【参考方案3】：

给出的答案适用于大于或等于的 ios。但是对于较低版本（因为问题有 if else 子句）它不起作用。对于 Bellow iOS，它将

localNotification.repeatInterval = NSCalendarUnitDay

每天设置通知