[英]Highlight cells in CollectionView
我正在iOS中构建一个应用程序,我希望我的CollectionView中的单元格在触摸时突出显示,就像普通按钮一样。 如何在didSelectItemAtIndexPath:(NSIndexPath *)indexPath方法中实现此目的 ?
尝试这样的事情:
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath{
.....
if (cell.selected) {
cell.backgroundColor = [UIColor colorWithRed:255/255.0 green:255/255.0 blue:153/255.0 alpha:1]; // highlight selection
}
else
{
cell.backgroundColor = [UIColor clearColor]; // Default color
}
return cell;
}
- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath{
UICollectionViewCell* cell = [collectionView cellForItemAtIndexPath:indexPath];
cell.backgroundColor = [UIColor colorWithRed:255/255.0 green:255/255.0 blue:153/255.0 alpha:1]; // //cell.lblImgTitle.text = @"xxx";
}
- (void)collectionView:(UICollectionView *)collectionView didDeselectItemAtIndexPath:(NSIndexPath *)indexPath{
UICollectionViewCell* cell = [collectionView cellForItemAtIndexPath:indexPath];
cell.backgroundColor = [UIColor clearColor];
}
如果您将单元类子类化,请将其放在.m文件中
- (void)setSelected:(BOOL)selected
{
if(selected)
{
self.backgroundColor = [UIColor colorWithWhite:0.1 alpha:0.5];
}
else
{
self.backgroundColor = [UIColor whiteColor];
}
}
尝试这个
cell.selectedBackgroundView.backgroundColor = [UIColor greenColor];
为什么不能通过可可豆荚改变背景颜色?我新增了一个用户定义的collectionView单元类`
- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath{
CHSMenuControlCell *cell = (CHSMenuControlCell*)[collectionView cellForItemAtIndexPath:indexPath];
cell.backgroundColor = [UIColor colorWithRed:255/255.0 green:255/255.0 blue:153/255.0 alpha:1]; // //cell.lblImgTitle.text = @"xxx";
}
- (void)collectionView:(UICollectionView *)collectionView didDeselectItemAtIndexPath:(NSIndexPath *)indexPath{
CHSMenuControlCell *cell = (CHSMenuControlCell *)[collectionView cellForItemAtIndexPath:indexPath];
cell.backgroundColor = [UIColor clearColor];
}
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.