IOS设置app图标未读消息个数

UIUserNotificationSettings *settings = [UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeBadge | UIUserNotificationTypeSound | UIUserNotificationTypeAlert categories:nil];    // 进行注册    [[UIApplication sharedApplication] registerUserNotificationSettings:settings];        [UIApplication sharedApplication].applicationIconBadgeNumber=10;