我没有使用过很多UICollectionView所以这可能是不可能的,但从来没有伤害过要求:)
每个单元格设置为不同的颜色。
我想要做的是点击一个单元格并推送到另一个UIViewController,它将包含与所选颜色相同的UIImageView。
现在我可以更改第二个UIViewController视图的颜色,但不能更改其中的UIImageView的颜色。
以下是我的一些代码:
- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath
{
[collectionView deselectItemAtIndexPath:indexPath animated:YES];
ImageViewController * imageVC = [[ImageViewController alloc] initWithNibName:@"ImageViewController" bundle:nil];
self.flatColor = [self colorForRow:indexPath.row];
[self.navigationController pushViewController:imageVC animated:YES];
imageVC.colorImageView.backgroundColor = _flatColor;
}
- (UIColor *)colorForRow:(NSInteger)row
{
UIColor *color;
switch (row)
{
case 0:
color = [UIColor redColor];
break;
case 2:
color = [UIColor greenColor];
break;
case 4:
color = [UIColor blueColor];
break;
default:
color = [UIColor yellowColor];
break;
}
return color;
}
编辑:
修正了问题。
我不得不重新安排一些代码。需要首先完全加载新的viewController,然后更改UIImageView的backgroundColor
答案 0 :(得分:0)
请尝试以下代码。
- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath
{
[collectionView deselectItemAtIndexPath:indexPath animated:YES];
ImageViewController * imageVC = [[ImageViewController alloc] initWithNibName:@"ImageViewController" bundle:nil];
self.flatColor = [self colorForRow:indexPath.row];
// This does not work
[imageVC.colorImageView setBackgroundColor:_flatColor];
//imageVC.colorImageView.backgroundColor = _flatColor;
// This works
//imageVC.view.backgroundColor = _flatColor;
[self.navigationController pushViewController:imageVC animated:YES];
}