ios - 没有导航栏时，如何在 EKEventViewController 中获取 "Done"或 "Back"按钮？

Question

我的 iOS 应用程序中有一个日历事件列表，单击时将在 EKEventViewController 中打开。这是我的代码:

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    EKEventViewController *eventViewController = [EKEventViewController new];
    eventViewController.event = [self.events objectAtIndex:[indexPath row]];
    [self presentViewController:eventViewController animated:YES completion:nil];
}

事件 View 从屏幕底部正确弹出，但我无法返回到事件列表!

我正在使用导航 Controller (但没有导航栏!)，所以添加此代码使我能够返回到列表:

-(void)viewDidAppear:(BOOL)animated
{
    [self.navigationController setNavigationBarHidden:YES];
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    EKEventViewController *eventViewController = [EKEventViewController new];
    eventViewController.event = [self.events objectAtIndex:[indexPath row]];
    [self.navigationController setNavigationBarHidden:NO];
    [self.navigationController pushViewController:eventViewController animated:YES];
}

但是这个解决方案不是很优雅，因为当我在事件 View 中按下“后退”按钮时，在事件 View 全部退出之前，导航栏并没有被删除(它显示在我的事件 ListView 的顶部)屏幕。

如何解决这个问题？最好的选择是以某种方式在事件 View 中得到一个后退按钮，我可以在这里使用第一个代码(这样我就可以避免显示导航栏)，并且 View 可以滑回屏幕底部按下时。

解决方案:最终得到以下代码:

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    EKEventViewController *eventViewController = [EKEventViewController new];
    eventViewController.event = [self.events objectAtIndex:[indexPath row]];
    eventViewController.delegate = self;
    UINavigationController *navBar = [[UINavigationController new] initWithRootViewController:eventViewController];
    [self presentViewController:navBar animated:YES completion:nil];
}

- (void)eventViewController:(EKEventViewController *)controller didCompleteWithAction:(EKEventViewAction)action
{
    [self dismissViewControllerAnimated:YES completion:nil];
}

Answer 1

看起来您根本不需要隐藏导航栏!你能解释更多为什么你需要隐藏或显示导航栏吗？这将是隐藏或显示模型 View 的简单解决方案。

//EKEventListVC.m

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
            EKEventViewController *pms = [EKEventViewController new];
            UINavigationController *nav = [[UINavigationController alloc]
                                           initWithRootViewController:pms];
            [self presentViewController:nav animated:YES completion:nil];
}

//EKEventViewController.m

- (void)addRightButton
{
    UIButton *rightButton = // make your button
    [rightButton addTarget:self action:@selector(rightBtnActionDone:) forControlEvents:UIControlEventTouchUpInside];

    UIBarButtonItem *barButtonItem = [[UIBarButtonItem alloc] initWithCustomView:rightButton];
    [self.navigationItem setRightBarButtonItem:barButtonItem];
}

//

- (void)rightBtnActionDone:(UIButton *)sender
{
    [self dismissViewControllerAnimated:YES completion:nil];
}

//为 EKEventKitUI 编辑

-(void)eventEditViewController:(EKEventEditViewController *)controller
         didCompleteWithAction:(EKEventEditViewAction)action {

    switch (action) {
       case EKEventEditViewActionCanceled:
           // User tapped "cancel"
           break;
       case EKEventEditViewActionSaved:
           // User tapped "save"
           break;
       case EKEventEditViewActionDeleted:
           // User tapped "delete"
           break;
       default:
           break;
    }

    [self dismissModalViewControllerAnimated:YES];
}

Code Example -