如何增加重复本地通知的应用程序徽章编号 (iPhone)

Question

我已经设置了每分钟重复一次的本地通知，但是我需要每次都增加应用程序徽章编号。当我现在运行它时，它似乎没有增加，只是保持为 1。请问有人可以帮助我吗？

以下是我创建通知的方法：

// Create the UILocalNotification
UILocalNotification *myNotification = [[UILocalNotification alloc] init];
myNotification.alertBody = @"Blah blah blah...";
myNotification.alertAction = @"Blah";
myNotification.soundName = UILocalNotificationDefaultSoundName;
myNotification.applicationIconBadgeNumber++;
myNotification.timeZone = [NSTimeZone defaultTimeZone];
myNotification.repeatInterval = NSMinuteCalendarUnit;
myNotification.fireDate = [[NSDate date] dateByAddingTimeInterval:30];
[[UIApplication sharedApplication] scheduleLocalNotification:myNotification];

Answer 1

经过大量研究后，我发现解决方案是没有解决方案：

iPhone：通过本地通知增加应用程序徽章

当您的应用程序处于后台时，无法使用本地通知动态更新徽章编号。您必须使用推送通知。

Answer 2

如果您使用外部服务（例如 Parse for Push），这应该很容易完成。只需在触发本地通知时增加解析徽章编号即可。虽然，这是一个特殊情况。

Answer 3

虽然没有简单的 applicationIconBadgeNumber++ 方法，但正如 BFar 提到的，您可以通过在添加或删除通知时更新所有计划的 UILocalNotifications 的 applicationIconBadgeNumbers 来实现您的要求。

虽然如果您有使用repeatInterval的通知，只要您调用scheduleNotification和decrementBadgeNumber，这将不起作用在适当的时候，下面的课程应该能起到作用。

@implementation NotificationScheduler

+ (void) scheduleNotification:(NSString*)message date:(NSDate*)date {
    UIApplication *app = [UIApplication sharedApplication];
    UILocalNotification *notification = [[UILocalNotification alloc] init];
    if (notification) {
        notification.fireDate = date;
        notification.timeZone = [NSTimeZone defaultTimeZone];

        notification.alertBody = message;
        notification.soundName = UILocalNotificationDefaultSoundName;
        notification.applicationIconBadgeNumber = [self getExpectedApplicationIconBadgeNumber:date];

        [app scheduleLocalNotification:notification];
        [self updateBadgeCountsForQueuedNotifiations];
    }
}

+ (void) decrementBadgeNumber:(long)amount {
    [self setCurrentBadgeNumber:([self getCurrentBadgeNumber] - amount)];
    [self updateBadgeCountsForQueuedNotifiations];
}

+ (long) getExpectedApplicationIconBadgeNumber:(NSDate*)notificationDate {
    long number = [self getCurrentBadgeNumber];
    for (UILocalNotification *notice in [self getScheduledLocalNotifications]) {
        if (notice.fireDate <= notificationDate) {
            number++;
        }
    }
    return number;
}

+ (void) updateBadgeCountsForScheduledNotifiations {
    long expectedBadgeNumber = [self getCurrentBadgeNumber];
    NSArray *allLocalNotifications = [self getScheduledLocalNotifications];
    for (UILocalNotification *notice in allLocalNotifications) {
        expectedBadgeNumber++;
        notice.applicationIconBadgeNumber = expectedBadgeNumber;
    }
    [[UIApplication sharedApplication] setScheduledLocalNotifications:allLocalNotifications];
}

+ (long) getCurrentBadgeNumber {
    return [UIApplication sharedApplication].applicationIconBadgeNumber;
}

+ (void) setCurrentBadgeNumber:(long)number {
    [UIApplication sharedApplication].applicationIconBadgeNumber = number;
}

+ (NSArray*) getScheduledLocalNotifications {
    NSSortDescriptor * fireDateDesc = [NSSortDescriptor sortDescriptorWithKey:@"fireDate" ascending:YES];
    return [[[UIApplication sharedApplication] scheduledLocalNotifications] sortedArrayUsingDescriptors:@[fireDateDesc]];
}

@end

Answer 4

我能够使用以下行来完成此操作，同时安排本地通知

localNotification.applicationIconBadgeNumber = [UIApplication sharedApplication].applicationIconBadgeNumber + 1;

并在应用程序委托的另一端

- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification {

    application.applicationIconBadgeNumber -= 1;
}

Answer 5

尝试类似的方法：

int plusOne = [myNotification.applicationIconBadgeNumber intValue];
plusOne++;

myNotification.applicationIconBadgeNumber = plusOne;

Answer 6

这应该有效。

myNotification.applicationIconBadgeNumber = [[UIApplication sharedApplication] applicationIconBadgeNumber] + 1;

Answer 7

试试这个...它在简单的场景中对我有用...

notification.applicationIconBadgeNumber = [UIApplication sharedApplication].scheduledLocalNotifications.count + 1;

并且不要忘记在应用程序启动时将徽章图标设置回 0。