ios - UICollectionView 没有可见接口(interface)声明选择器 indexPathForSelectedRow

Question

我正在尝试将 TableView Controller 上的代码更改为 Collection View Controller ，现在我正在尝试让 Segue 工作，但出现此错误:

No visible @interface for 'UICollectionView' declares the selector 'indexPathForSelectedRow'

这是我的 Segue:

- (void) prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
    if ( [segue.identifier isEqualToString:@"showUpcomingRelease"]){
        UpcomingReleaseViewController *upcomingReleaseViewController = (UpcomingReleaseViewController *)[segue destinationViewController];
        upcomingReleaseViewController.singleRelease = [self.upcomingReleases objectAtIndex:[[self.collectionView indexPathForSelectedRow] row]];
    }
}

谢谢。

Answer 1

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    if ([[segue identifier] isEqualToString:@"showUpcomingRelease"])
    {
        NSIndexPath *selectedIndexPath = [[self.collectionView indexPathsForSelectedItems] objectAtIndex:0];
        UpcomingReleaseViewController *upcomingReleaseViewController = [segue destinationViewController];
        upcomingReleaseViewController.singleRelease = self.upcomingReleases[selectedIndexPath.row];
    }
}