ios - 交互式推送通知 - 隐藏/显示按钮

Question

我关注了this tutorial在推送通知上显示按钮。
通过在 didFinishLaunchingWithOptions 中调用 registerNotification 来注册按钮。
然而，在少数情况下，我需要显示一个没有任何按钮的简单通知。如何显示/隐藏不同通知的按钮？

Answer 1

要添加另一种没有按钮的交互式通知，您必须更新 UIUserNotificationSettings。

创建一个没有任何按钮的新通知类别UIMutableUserNotificationCategory:

UIMutableUserNotificationCategory *newNotificationCategory = [[UIMutableUserNotificationCategory alloc] init];
newNotificationCategory.identifier = @"no_button_id";

然后，将这个新类别添加到现有的UIUserNotificationSettings:

    NSMutableArray *arrNewCategories = [NSMutableArray new];
    UIUserNotificationSettings *oldSettings = [[UIApplication sharedApplication]currentUserNotificationSettings];
    for (UIMutableUserNotificationCategory *oldCategory in oldSettings.categories)
    {
      if (![oldCategory.identifier isEqualToString:newNotificationCategory.identifier])
           [arrNewCategories addObject:oldCategory];
    }
    [arrNewCategories addObject:newNotificationCategory];

    UIUserNotificationType notificationType = UIUserNotificationTypeBadge | UIUserNotificationTypeSound | UIUserNotificationTypeAlert;
    UIUserNotificationSettings *newSettings = [UIUserNotificationSettings settingsForTypes:notificationType categories:[NSSet setWithArray:arrNewCategories]];

    [[UIApplication sharedApplication] registerUserNotificationSettings:newSettings];

只需确保 newNotificationCategory 的标识符与您的 UILocalNotification 的类别匹配，您不需要任何按钮。

然后安排通知:

UILocalNotification* localNotification = [[UILocalNotification alloc] init];
localNotification.fireDate = [NSDate dateWithTimeIntervalSinceNow:afireDate];
localNotification.alertBody = @"alert body text";
localNotification.category = @"no_button_id"; //  Same as category identifier
localNotification.timeZone = [NSTimeZone systemTimeZone];
localNotification.soundName = SOUND_FILE;
localNotification.repeatInterval = 0;
[[UIApplication sharedApplication]scheduleLocalNotification:localNotification];