是否可以在iPhone中更新本地通知 [英] Is it possible to update the local notification in iPhone

问题描述

我已经按以下方式添加了本地通知：

I have added a local notification programmatically like below:

UILocalNotification *eventLocalNotification=[[UILocalNotification alloc]init];
eventLocalNotification.fireDate=myDate;
eventLocalNotification.timeZone=[NSTimeZone defaultTimeZone];
eventLocalNotification.alertBody=@"My notification";
eventLocalNotification.soundName=UILocalNotificationDefaultSoundName;

我可以更改firingDate，timeZone，alertBody或任何其他财产吗？

Can I change the firingDate, timeZone, alertBody, or any other property?

推荐答案

经过互联网搜索后，我得到的一件事我们不能编辑 a UILocal通知一旦添加。但确定我找到了另一种方式。

After searching a lot over internet, I got a thing that we can't edit a UILocal Notification once added. But sure there is another way that I have found.

1. 获取设备的所有本地通知。


2. 搜索相应的本地通知


3. 取消该通知


4. 创建新通知

1. Get all the Local notification of your device.
2. Search the respective local notification
3. Cancel that notification
4. Create a New one

以下是添加通知的方法。

-(void)setLocalNotification
{
    UILocalNotification *eventLocalNotification =   [[UILocalNotification alloc]init];

    eventLocalNotification.fireDate     =   //set firing Date of NSDate type
    eventLocalNotification.timeZone     =   [NSTimeZone defaultTimeZone];
    eventLocalNotification.alertBody    =   [NSString stringWithFormat:@"An event has arrived\n Event Name: %@",notificationName.Text];
    eventLocalNotification.soundName    =   UILocalNotificationDefaultSoundName;

    if ([repeat isEqualToString:@"Once"]){

        eventLocalNotification.repeatInterval   =   0;

    }else if ([repeat isEqualToString:@"Daily"]){

        eventLocalNotification.repeatInterval   =   NSDayCalendarUnit;

    }else if ([repeat isEqualToString:@"Weekly"]){

        eventLocalNotification.repeatInterval   =   NSWeekCalendarUnit;

    }else if ([repeat isEqualToString:@"Monthly"]){

        eventLocalNotification.repeatInterval   =   NSMonthCalendarUnit;

    }else if ([repeat isEqualToString:@"Yearly"]){

        eventLocalNotification.repeatInterval   =   NSYearCalendarUnit;
    }

    NSDictionary *info  =   [NSDictionary dictionaryWithObject:[NSString stringWithFormat:@"%@",notificationName.text] forKey:@"name"];
    eventLocalNotification.userInfo =   info;
    NSLog(@"notification userInfo gets name : %@",[info objectForKey:@"name"]);
    [[UIApplication sharedApplication] scheduleLocalNotification:eventLocalNotification];
    NSLog(@"Notification created");
}

以下是取消通知的功能

-(void)cancelLocalNotification
{
    UILocalNotification * notificationToCancel=nil;
    for(UILocalNotification * aNotif in [[UIApplication sharedApplication] scheduledLocalNotifications])
    {
        NSLog(@"%@",[aNotif.userInfo objectForKey:@"name"]);
        if([[aNotif.userInfo objectForKey:@"name"] isEqualToString:notificationName ])
        {
            notificationToCancel    =   aNotif;
            [[UIApplication sharedApplication] cancelLocalNotification:notificationToCancel];
            NSLog(@"Notification Cancelled");
            break;
        }
    }

}

希望你会从中受益。运气最佳

Hope you will get benefit from it. Best of Luck

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