Question

如果用户将警报样式设置为横幅。他们可以收到超过1个通知，而不会提示他们清除它。然后他们去使用他们的手机，他们说3存储。如果点击最新的一个＆amp;它打开了应用程序，我只想清除这一个通知，我还需要去badgeCount--;

如何使用下面的代码实现它？（目前它已经开始清理所有我不想要的东西......）我也注意到有时它会更新徽章编号。但如果我切换回iOS主屏幕并下拉通知菜单，它仍然存在！

- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo
{
    if([[userInfo valueForKey:@"aps"] valueForKey:@"alert"] != nil) {
        NSString *message = [[userInfo valueForKey:@"aps"] valueForKey:@"alert"];
        if(message != nil) {
            UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Usage Alert"
            message:message  delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles:@"Ok", nil];
            [alertView show];
            [[UIApplication sharedApplication] setApplicationIconBadgeNumber: 0];
            [[UIApplication sharedApplication] cancelAllLocalNotifications];

        }
    }
}

Answer 1

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


 UIApplication *app = [UIApplication sharedApplication];
 NSInteger badgeNumber = [app applicationIconBadgeNumber];// Take the current badge number
 badgeNumber--;    // decrement by one 
 [app setApplicationIconBadgeNumber:badgeNumber];  // set ne badge number
 [app cancelLocalNotification:notification];    // cancel the received notification. It will clear the notification from banner alos
}

Answer 2

您可以添加

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

到你的app代表。这将被调用，你可以使用

[[UIApplication sharedApplication] cancelLocalNotification:notification];

删除特定通知并减少徽章数。

Answer 3

我想警告不要打电话

[[UIApplication sharedApplication] setApplicationIconBadgeNumber:bg_NUM]

这

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

方法！

如果您的预定本地通知带有一些徽章编号，那么徽章将异步设置<毫秒后输入-didReceiveLocalNotification

样本：

-(void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification {
    [[UIApplication sharedApplication] setApplicationIconBadgeNumber:0];
    // ^^^ maybe not reset badge to 0!! ^^^
}

另一个代码：

-(void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification {
    sleep(1); //waiting for system is set our scheduled badge
    [[UIApplication sharedApplication] setApplicationIconBadgeNumber:0];
    // ^^^ most chances for reset badge to 0 ^^^
}

测试代码，屏幕触摸安排本地通知并计算系统真实集徽章前的延迟：

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
    [[UIApplication sharedApplication] setApplicationIconBadgeNumber:0];
    UILocalNotification *localNotif = [[[UILocalNotification alloc] init] autorelease];
    localNotif.applicationIconBadgeNumber = rand()%100+1;
    localNotif.fireDate = [NSDate dateWithTimeIntervalSinceNow:1];
    [[UIApplication sharedApplication] scheduleLocalNotification:localNotif];
}
[...]
- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification {
    CFAbsoluteTime startTime = CFAbsoluteTimeGetCurrent();
    while ([UIApplication sharedApplication].applicationIconBadgeNumber == 0) sleep(0);
        NSLog(@"badge set: %d   after %f sec.", [UIApplication sharedApplication].applicationIconBadgeNumber, CFAbsoluteTimeGetCurrent()-startTime);
}

输出：

badge set: 41   after 0.000839 sec.
badge set: 9   after 0.000754 sec.
badge set: 56   after 0.076026 sec.
badge set: 17   after 0.069889 sec.
badge set: 8   after 0.056245 sec.
badge set: 71   after 0.120729 sec.
badge set: 28   after 0.122720 sec.
badge set: 17   after 0.000758 sec.

在iOS 4.2 / 4.3 / 5.0 / 6.1中在不同设备上进行此测试

在-didReceiveLocalNotification消息中重置徽章编号时要小心！ （这仅适用于LocalNotification /非远程推送/且仅在应用程序处于活动状态时才有效接受片刻）

如何清除iOS中的通知

3 个答案: