The didSelectRowAtIndexPath
method doesn't work in my app. I don't get printed any output with NSLog
:
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
PhotoCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"Cell" forIndexPath:indexPath];
PFObject *imageObject = [self.imageFilesArray objectAtIndex:indexPath.row];
PFFile *imageFile = [imageObject objectForKey:@"file"];
[imageFile getDataInBackgroundWithBlock:^(NSData *data, NSError *error) {
if (!error) {
cell.imageView.image = [UIImage imageWithData:data];
}
}];
return cell;
}
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
PhotoCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"Cell" forIndexPath:indexPath];
NSLog(@"didSelectRowAtIndexPath");
cell.imageView.image = self.image;
return cell;
}
I would like that when I tap on a cell, that take the image selected, and give the image to self.image
.
Can we make that in segue? Because my didSelectRowAtIndexPath
method doesn't work at all.
-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if ([segue.identifier isEqualToString:@"showPhotoDetail"]) {
NSLog(@"SEGUE showPhotoDetail");
UICollectionViewCell *cell = sender;
NSIndexPath *indexPath = [self.collectionView indexPathForCell:cell];
PhotoDetailViewController *photoDetailViewController = (PhotoDetailViewController *)segue.destinationViewController;
photoDetailViewController.truckImage = self.image;
//[UIImage imageNamed:[self.imageFilesArray objectAtIndex:indexPath.row] ];
NSLog(@"%@", photoDetailViewController.truckImage);
}
}
Your method signature of selecting Item is wrong, the correct method signature is this
- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath
More Info here
try this code to get the selected image.
- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath {
PhotoCell *cell = [collectionView cellForItemAtIndexPath:indexPath];
self.image = cell.imageView.image;
}
-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if ([segue.identifier isEqualToString:@"showPhotoDetail"]) {
// get index path of selected cell
NSIndexPath *indexPath = [collectionView.indexPathsForSelectedItems objectAtIndex:0];
// get the cell object
PhotoCell *cell = [collectionView cellForItemAtIndexPath:indexPath];
// get image from selected cell
self.image = cell.imageView.image;
}
}
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