Iphone 奇数行为UIActionSheet+；UITableView：行消失

我有一个UITableView，里面有一些静态单元格。其中一个触摸时显示UIActionSheet。下面是它的代码：

viewDidLoad：初始化控件

- (void)viewDidLoad
{
    [super viewDidLoad];

    [self initializeControls];
}

InitializeControl：将手势识别器添加到单元格内的标签，以显示UIActionSheet

- (void)initializeControls {
    [...]

    // Places Label
    self.placeNamesLabel.userInteractionEnabled = YES;
    tapGesture = \
    [[UITapGestureRecognizer alloc]
     initWithTarget:self action:@selector(didPlaceNamesLabelWithGesture:)];
    [self.placeNamesLabel addGestureRecognizer:tapGesture];
    tapGesture = nil;

    [...]
}

-(void)dismissPlacesActionSheet:(id)sender {
    [placesActionSheet dismissWithClickedButtonIndex:0 animated:YES]; }

DidPlaceNamesLabelWith手势：初始化UIActionSheet，从情节提要添加UITableView和关闭按钮

- (void)didPlaceNamesLabelWithGesture:(UITapGestureRecognizer *)tapGesture
{
    // Show UITableView in UIActionView for selecting Place objects.
    placesActionSheet = [[UIActionSheet alloc] initWithTitle:nil
                                                      delegate:nil
                                             cancelButtonTitle:nil
                                        destructiveButtonTitle:nil
                                             otherButtonTitles:nil];

    [placesActionSheet setActionSheetStyle:UIActionSheetStyleBlackTranslucent];

    CGRect tableFrame = CGRectMake(0, 40, 0, 0);

    UIStoryboard *storyBoard = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil];
    AddArticlesPlacesViewController *placesView = [storyBoard instantiateViewControllerWithIdentifier:@"PlacesForArticle"];
    placesView.managedObjectContext = self.managedObjectContext;
    placesView.view.frame = tableFrame;
    [placesActionSheet addSubview:placesView.view];
    placesView = nil;

    UISegmentedControl *closeButton = [[UISegmentedControl alloc] initWithItems:[NSArray arrayWithObject:@"Close"]];
    closeButton.momentary = YES;
    closeButton.frame = CGRectMake(260, 7.0f, 50.0f, 30.0f);
    closeButton.segmentedControlStyle = UISegmentedControlStyleBar;
    closeButton.tintColor = [UIColor blackColor];
    [closeButton addTarget:self action:@selector(dismissPlacesActionSheet:) forControlEvents:UIControlEventValueChanged];
    [placesActionSheet addSubview:closeButton];
    closeButton = nil;

    [placesActionSheet showInView:[[UIApplication sharedApplication] keyWindow]];

    [placesActionSheet setBounds:CGRectMake(0, 0, 320, 485)];
}

dismissPlacesActionSheet：关闭UIActionSheet

- (void)initializeControls {
    [...]

    // Places Label
    self.placeNamesLabel.userInteractionEnabled = YES;
    tapGesture = \
    [[UITapGestureRecognizer alloc]
     initWithTarget:self action:@selector(didPlaceNamesLabelWithGesture:)];
    [self.placeNamesLabel addGestureRecognizer:tapGesture];
    tapGesture = nil;

    [...]
}

-(void)dismissPlacesActionSheet:(id)sender {
    [placesActionSheet dismissWithClickedButtonIndex:0 animated:YES]; }

一切正常，UITableView可以从核心数据中很好地填充。那么问题出在哪里呢？关键是当点击任何一行时，整个表都会变空（对不起，我还不能发布图像）

我尝试添加一个新的自定义行，该行带有一个按钮，可以向AddArticlesPlacesViewController触发一个推送序列；这工作正常，行为符合预期。因此，问题在于UIActionSheet和UITableView之间

以下是两个视图控制器的界面：

梅因

@接口AddArticleViewController:UITableViewController
[...]
@属性（弱，非原子）IBUILabel*placeNamesLabel；
@属性（强，非原子）NSManagedObjectContext*managedObjectContext；
[...]
@结束

次要的

@interface AddArticlesPlacesViewController : UITableViewController <NSFetchedResultsControllerDelegate>

@property (strong, nonatomic) NSFetchedResultsController *fetchedResultsController;
@property (strong, nonatomic) NSManagedObjectContext *managedObjectContext;

@end

@interface AddArticlesPlacesViewController:UITableViewController
@属性（强，非原子）NSFetchedResultsController*fetchedResultsController；
@属性（强，非原子）NSManagedObjectContext*managedObjectContext；
@结束

我卡住了。我做错了什么

问候

---

Pedro Ventura.

您可以使用tableview的委托方法：

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath

        NSLog(@"indexpath-->%d",indexPath.row);
        if (indexPath.row==0 || indexPath.row == 2 ) 
        {

            NSLog(@"row %d",indexPath.row);

        }

        if (indexPath.row==1)
     {

            actionsheet=[[UIActionSheet alloc]initWithTitle:@"Sample" delegate:self cancelButtonTitle:@"Cancel" destructiveButtonTitle:nil otherButtonTitles:nil, nil];
               [actionsheet showInView:self.view];

        }
    }

您可以对所选按钮使用UIActionsheetDelegate的方法：

- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
    {

         NSLog(@"index==>%d",buttonIndex);
           NSLog(@"cancel");
    }

---

是因为placesView托管对象上下文和placesView=nil吗？@verbumdei：我想不是，UITableView在两种解决方案（UIActionSheet内部和外部）中都显示了核心数据中的数据。我这样做了，在UIActionSheet中不会触发此事件。-（void）tableView:（UITableView*）tableView DidSelectRowatineXpath:（NSIndexPath*）indexPath{NSLog（@“Selected row%@”，indexPath）；}应在使用UIActionSheet时不调用HighlightRowatineXpath、DidSelectRowatineXpath和DidSelectRowatineXpath；但是，是的，还有其他一些：numberOfSectionsInTableView，sectionIndexTitlesForTableView，numberOfRowsInSection，cellForRowAtIndexPath。