我正在嘗試使用此代碼每5秒觸發一次本地通知

Question

UILocalNotification *localNotification = [[UILocalNotification alloc] init];
if (localNotification == nil)
    return;
//localNotification.fireDate = [NSDate dateWithTimeInterval:timeInterval sinceDate:now];
localNotification.fireDate = [NSDate date];
localNotification.repeatInterval = 5*NSSecondCalendarUnit;
localNotification.alertBody = @"Your alert message";
[[UIApplication sharedApplication] cancelAllLocalNotifications];
[[UIApplication sharedApplication] scheduleLocalNotification:localNotification];

此代碼在前5秒后會生成通知，然后返回NSMinuteCalendarUnit，我一直在嘗試解決此問題，但沒有幫助。

我想每5秒設置一次通知，然后它將觸發它，直到我強制要停止它為止。

有人可以幫忙嗎？

Answer 1

UILocalNotification的repeatInterval的類型為NSCalendarUnit而不是時間間隔。 您只能為NSCalendarUnit枚舉分配一個值。

如果您想每5秒觸發一次本地通知，則需要設置多個通知。

Answer 2

這是代碼。 每隔5分鍾而不是每周使用一次。

-(void)setLocalNotificationwithOptions :(NSDictionary *)launchOptions
{
     UILocalNotification *localNoti = [launchOptions  objectForKey:UIApplicationLaunchOptionsLocalNotificationKey];
if (localNoti) {
    NSLog(@"Notification:%@",localNoti);
}

[[UIApplication sharedApplication] cancelAllLocalNotifications];

NSCalendar *gregCalendar12 = [[NSCalendar alloc]initWithCalendarIdentifier:NSGregorianCalendar];

NSDateComponents *dateComponent12 = [gregCalendar12 components:NSWeekdayCalendarUnit | NSHourCalendarUnit | NSMinuteCalendarUnit fromDate:[NSDate date]];


[dateComponent12 setWeekday:7];
[dateComponent12 setHour:14];
[dateComponent12 setMinute:46];

UILocalNotification *notification12 = [[UILocalNotification alloc]init];
[notification12 setAlertBody:@"ENJOY YOUR WEEKEND!"];
[notification12 setFireDate:[gregCalendar12 dateFromComponents:dateComponent12]];
notification12.repeatInterval = NSMinuteCalendarUnit;
[notification12 setTimeZone:[NSTimeZone defaultTimeZone]];
[[UIApplication sharedApplication] scheduleLocalNotification:notification12];
}

希望這對您有所幫助。 謝謝..

Answer 3

如果您想每5秒重復一次計時器，則UILocalNotification允許每一種聲音持續30秒。 因此，在您的目錄中放30秒的聲音，然后

[[UIApplication sharedApplication] cancelAllLocalNotifications];
NSDate *date = "set your notification date"
for (int i = 0; i < 10; i++){
    NSDate *repeatTime = [date dateByAddingTimeInterval:300 * i];
    notification.fireDate = repeatTime;
    [[UIApplication sharedApplication] scheduleLocalNotification:localNotification];
}