ios - 如何在iOS中仅清除通知

Question

如果用户将警报样式设置为横幅。他们可以收到多个通知，而不会提示他们清除通知。然后他们去使用电话，并且说了3个。如果单击最新的它并打开应用程序，则我只想清除此一条通知，我还需要输入badgeCount--;
如何使用下面的代码实现它？ (此刻将清除所有我不想要的内容...)我还注意到有时它确实会更新徽章编号。但是，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
}