暂停UILocalNotification

Question

我正在制作一个计时器应用程序。用户设置时间，应用程序从那里开始计数。我添加了一个UILocalNotification，这样即使你不在应用程序中告诉你计时器已经完成，它也会弹出：

在我看来，控制器：

- (void)setupLocalNotifications {
[[UIApplication sharedApplication] cancelAllLocalNotifications];

UILocalNotification *localNotification = [[UILocalNotification alloc] init];

totalSeconds = (setHour * 60 * 60) + (setMinute * 60) + (setSecond);

NSDate *now = [NSDate date];
NSDate *dateToFire = [now dateByAddingTimeInterval:totalSeconds];

localNotification.fireDate = dateToFire;
localNotification.alertBody = @"Timer Done";
localNotification.soundName = UILocalNotificationDefaultSoundName;
localNotification.applicationIconBadgeNumber = 1; // increment

NSDictionary *infoDict = [NSDictionary dictionaryWithObjectsAndKeys:@"Object 1", @"Key 1", @"Object 2", @"Key 2", nil];
localNotification.userInfo = infoDict;

[[UIApplication sharedApplication] scheduleLocalNotification:localNotification];
}

在我的APPDELEGATE中：

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.;

ScrollViewController *sv = [[ScrollViewController alloc] init];

UILocalNotification *notification = [launchOptions objectForKey:UIApplicationLaunchOptionsLocalNotificationKey];

if (notification) {
    [self showAlarm:notification.alertBody];
    NSLog(@"AppDelegate didFinishLaunchingWithOptions");
    application.applicationIconBadgeNumber = 0;
}

self.window.rootViewController = sv; // Make tab bar controller the root view controller
[self.window makeKeyAndVisible];
return YES;
}

- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification {
[self showAlarm:notification.alertBody];
application.applicationIconBadgeNumber = 0;
NSLog(@"AppDelegate didReceiveLocalNotification %@", notification.userInfo);
}

- (void)showAlarm:(NSString *)text {
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Timer"
                                                    message:text
                                                   delegate:self
                                          cancelButtonTitle:@"Stop Timer"
                                          otherButtonTitles:nil];
[alertView show];
}

所发生的情况是，在用户定义的秒数过去之后，我设置了一个UILocalNotification。然而，我的应用程序允许您暂停计时器。当暂停时，UILocalNotification将继续进行，并在秒过后离开。有没有办法暂停本地通知？

Answer 1

不能暂停本地通知。如果应用程序中暂停了计时器，则应取消通知，并在恢复计时器时创建/调度一个新的通知。