某些集合视图单元 didSelectItemAtIndexPath 不起作用

Posted 2023-03-14

【中文标题】某些集合视图单元 didSelectItemAtIndexPath 不起作用

【英文标题】：some of the collection view cell didSelectItemAtIndexPath not working

【发布时间】：2014-06-25 12:05:38

【问题描述】：

我已经被这个震惊了一段时间。我的错误是时间表中的某些单元格 didSelectItemAtIndexPath 没有调用。我在该方法上保留了一个断点，当我单击某些单元格时，该方法没有被调用。可能是什么问题呢。请看下面的代码

- (NSInteger)collectionView:(UICollectionView *)view numberOfItemsInSection:(NSInteger)section;


       return 25;



- (NSInteger)numberOfSectionsInCollectionView: (UICollectionView *) collectionView


          return 1;



-(void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath

    NSLog(@"item clicked");
    CGRect rect = [collectionData layoutAttributesForItemAtIndexPath:indexPath].frame;

    UIStoryboard* storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
    UIViewController* vc = [storyboard instantiateViewControllerWithIdentifier:@"note"];

    pc = [[UIPopoverController alloc] initWithContentViewController:vc];

    [pc presentPopoverFromRect:rect inView:collectionData
      permittedArrowDirections:UIPopoverArrowDirectionAny
                      animated:YES];
    NSLog(@" The index path is %@", indexPath);



- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath



    // we're going to use a custom UICollectionViewCell, which will hold an image and its label
    Cell *myCell = [collectionData dequeueReusableCellWithReuseIdentifier:@"TableCell"
                                                       forIndexPath:indexPath];

    if (indexPath.row < 20 || indexPath.row == 22 )
    
    myCell.roomLabel.text = [NSString stringWithFormat:@"%ld,%ld", (long)indexPath.row, (long)indexPath.section];

    NSLog(@"cell no %ld" ,(long)indexPath.row );
    myCell.subjectLabel.text =@"English";
    myCell.cellView.backgroundColor= [UIColor grayColor];

    [myCell.redXbuttonOutlet addTarget:self action:@selector(buttonPressed:) forControlEvents:UIControlEventTouchUpInside];

    if(isLongPressed)
    
        [myCell.redXbuttonOutlet setHidden:NO];
    
    else
    
       [myCell.redXbuttonOutlet setHidden:YES];
    
    
     else
    

        myCell.userInteractionEnabled = NO;
      [myCell.redXbuttonOutlet setHidden:YES];
       myCell.cellView.backgroundColor= [UIColor whiteColor];
      myCell.subjectLabel.text =@"";
       myCell.roomLabel.text = @"";

    
    return myCell;


-(void)buttonPressed:(id)sender

    NSLog(@"Button");
    UIAlertView *alert =[[UIAlertView alloc]initWithTitle:@"Delete session" message:@"Do you want to delete this session" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];
    [alert show];

【参考方案1】：

老兄，您已禁用某些单元格的用户交互。 检查下面的代码在 cellForItemAtIndexPath 内

else


  myCell.userInteractionEnabled = NO; // <-----Note this Line

  [myCell.redXbuttonOutlet setHidden:YES];
  myCell.cellView.backgroundColor= [UIColor whiteColor];
  myCell.subjectLabel.text =@"";
  myCell.roomLabel.text = @"";

【讨论】：

你是对的，但如果我删除这一行，即 myCell.userInteractionEnabled = NO;下面的白色单元格，即 (20,0) ， (21,0)， (23,0) 和 (24,0) 被启用.. 我只希望这些单元格不应该有用户交互......

我为此添加了一些代码...我添加了 if (indexPath.row

nandri bro... 很高兴看到一个拥有 14.5k 声望的塔米兰人 :-)

非常感谢您的问候，伙计，但我希望我们应该停止此聊天，因为在 Stack Over Flow 中，超出主题将被视为冒犯。