当我打开通知托盘查看通知时，UILocalNotification会触发

Question

我使用了本地通知并安排了开火日期，但是当应用程序处于后台并且我打开通知托盘以查看通知时，本地通知会自动触发，但是火灾日期仍然存在..是否有任何解决方案可以解决该问题

Answer 1

This sounds like you have two issues. First, the local notification has been created with a fire date set in the past - that's why its appearing as soon as you open the app.

Secondly, you may be setting the notification's repeatInterval to a non-zero value, which will cause it to come up more than once.

See the below code for setting a local notification to fire at 3pm:

UILocalNotification *localNotification = [[UILocalNotification alloc] init];
localNotification.alertBody = @"This is a test alert";
NSCalendar *currentCalendar = [NSCalendar currentCalendar];

NSDateComponents *comps = [[NSDateComponents alloc] init];
[comps setHour: 15];
[comps setMinute: 0];
[comps setSecond: 0];
NSDate *threePM = [currentCalendar dateFromComponents:comps];

// Test if the current time is after three or not:
if(threePM != [threePM earlierDate: [NSDate date]])
{
  comps = [[NSDateComponents alloc] init];
  [comps setDay: 1];
  threePM = [currentCalendar dateByAddingComponents: comps toDate: threePM options: 0];
}

localNotification.fireDate = threePM;
localNotification.repeatInterval = 0;

[[UIApplication sharedApplication] scheduleLocalNotification: localNotification];