無法取消NSLocalNotification並在應用程序內調用NSLocalNotification

Question

我有以下代碼，但通知出來後，我無法取消圖標徽章。我應該添加什麼代碼才能啓動應用程序，取消通知並重置圖標徽章？

另一個問題是爲什麼通知只出現在手機的主屏幕上？在應用程序中，通知不會顯示。謝謝。

display.text=[NSString stringWithFormat:@"%@A",display.text]; 
    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Utilities" message:@"Alarm added" delegate:self cancelButtonTitle:@"Done" otherButtonTitles:nil]; 
    // optional - add more buttons: 

    [alert show]; 

    UILocalNotification *localNotification = [[UILocalNotification alloc] init]; //Create the localNotification object 

    NSDate *date = [NSDate date]; 

    // Add one minute to the current time 
    NSDate *dateToFire = [date dateByAddingTimeInterval:20]; 

    // Set the fire date/time 
    [localNotification setFireDate:dateToFire]; 
    [localNotification setTimeZone:[NSTimeZone defaultTimeZone]]; 


    [localNotification setAlertAction:@"Done"]; 
    [localNotification setAlertBody:@"(A)"]; 
    [localNotification setHasAction: YES]; 
    [localNotification setSoundName:UILocalNotificationDefaultSoundName]; 

    [localNotification setApplicationIconBadgeNumber:[[UIApplication sharedApplication] applicationIconBadgeNumber]+1]; 

    [[UIApplication sharedApplication] scheduleLocalNotification:localNotification]; 

Answer 1

要刪除的證件號碼，你可以使用這個

[UIApplication sharedApplication].applicationIconBadgeNumber = 0; 

&

取消所有本地通知與此代碼：

[[UIApplication sharedApplication] cancelAllLocalNotifications]; 

取消一個本地通知本代碼行：

[[UIApplication sharedApplication] cancelLocalNotification:theNotification];