Ios UICollectionviewCell图像在选择时更改

我有

UICollectionview

控制器，每个单元格中都有

UIButton

。选择按钮时，我必须更改按钮bg图像，双击时，我必须再次更改它。（在“用户兴趣”页面上，单击一次表示喜欢，双击表示喜欢的概念）。 最好的方法是什么

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

    UICollectionViewCell *cell = [interestsCollection dequeueReusableCellWithReuseIdentifier:@"Cell" forIndexPath:indexPath];

    UIButton* img=[[UIButton alloc]init];
    [img setImage:[UIImage imageNamed:[imgTitleArray objectAtIndex:indexPath.row]] forState:UIControlStateNormal];
    [img addTarget: self action: @selector(interestClicked:) forControlEvents: UIControlEventTouchUpInside] ;
    img.frame=CGRectMake(10, 10, 60, 60);
    [cell.contentView addSubview:img];

    UILabel* lbl=[[UILabel alloc]initWithFrame:CGRectMake(0, 75, 80, 20)];
    lbl.textAlignment = NSTextAlignmentCenter;
    lbl.text=[titleArray objectAtIndex:indexPath.row];
    lbl.font = [UIFont fontWithName:@"Arial" size:11];
    lbl.textColor = [UIColor colorWithRed:135.0/255.0 green:135.0/255.0 blue:135.0/255.0 alpha:1.0];
    [cell.contentView addSubview:lbl];

    return cell;
}

---

您可以使用单键和双键

tapperstate

处理这种情况。在受尊敬的选择器的帮助下，您可以更改

ui按钮的
ui图像

以下是指导您的链接。如何在
UICollectionView
上创建双击手势。借助于此，您还可以创建单点击手势

将
UITapGestureRecognitizer
添加到按钮中，并根据需要更改颜色

  UITapGestureRecognizer *tapOnce = [[UITapGestureRecognizer alloc] initWithTarget:self  action:@selector(tapOnce:)];
  UITapGestureRecognizer *tapTwice = [[UITapGestureRecognizer alloc] initWithTarget:self  action:@selector(tapTwice:)];

  tapOnce.numberOfTapsRequired = 1;
  tapTwice.numberOfTapsRequired = 2;

  //stops tapOnce from overriding tapTwice
  [tapOnce requireGestureRecognizerToFail:tapTwice];

  [self.button addGestureRecognizer:tapOnce]; //remove the other button action which calls method `button`
  [self.button addGestureRecognizer:tapTwice];

你实现了这个方法吗-（void）collectionView:（UICollectionView*）collectionView didSelectItemAtIndexPath:（NSIndexPath*）indexPath{}是的，我有这个方法，但如何在选择时更改所选单元格的子视图（按钮）背景？-（void）有趣的点击：（id）发送方{UIButton*按钮=（UIButton*）发送方；//在此处更改按钮图像[collectionView重新加载数据]；}