Get IndexPath of the cell which I clicked after opening the photo library and selecting a photo to set up this photo in the clicked cell

Question

I've a tableView with dynamic cells. Each section has 5 rows. In the fifth row there is a button and an imageview. When (at runtime) I click on the button, I can choose a photo from my photo library. The image should be put in imageview. This doesn't happen because I can't get the indexPath of the cell which I clicked the button to add a photo. The number of sections is decided at run-time using a stepper.

Here the code that will be executed when I click on the button (to open the photo library)

//method connected to the selected button photo
- (IBAction)selectPhoto:(id)sender{
    UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:@"Are you sure?" delegate:self cancelButtonTitle:@"Cancel" destructiveButtonTitle:nil otherButtonTitles:@"Take a photo",@"Pick from library", nil];
    [self getIndexPathAtSection:sender];
    [actionSheet showInView:self.view];
}


- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex{
    if (buttonIndex == 0) {
        [self shootPictureOrVideo];
    }

    else if (buttonIndex == 1){
        [self selectExistingPictureOrVideo];
    }
}
#pragma mark - CAMERA AND PHOTO LIBRARY    
- (void)pickMediaFromSource:(UIImagePickerControllerSourceType)sourceType
    {
    NSArray *mediaTypes = [UIImagePickerController availableMediaTypesForSourceType:sourceType];
    if ([UIImagePickerController isSourceTypeAvailable:sourceType] && [mediaTypes count]>0){
        NSArray *mediaTypes = [UIImagePickerController availableMediaTypesForSourceType:sourceType];
        UIImagePickerController *picker = [[UIImagePickerController alloc] init];
        picker.mediaTypes = mediaTypes;
        picker.delegate = self;
        picker.allowsEditing = YES;
        picker.sourceType = sourceType;
        [self presentViewController:picker animated:YES completion:NULL];
    } else {
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Error accessing media" message:@"Device doesn't support that media source" delegate:nil cancelButtonTitle:@"Drat!" otherButtonTitles:nil, nil];
        [alert show];


    }
}


- (UIImage *)shrinkImage:(UIImage *)original toSize:(CGSize)size
{
    UIGraphicsBeginImageContextWithOptions(size, YES, 0);
    [original drawInRect:CGRectMake(0, 0, size.width, size.height)];
    UIImage *final = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    return final;
}

- (void)shootPictureOrVideo
{
    [self pickMediaFromSource:UIImagePickerControllerSourceTypeCamera];
}
- (void)selectExistingPictureOrVideo
{
    [self pickMediaFromSource:UIImagePickerControllerSourceTypePhotoLibrary];
}


#pragma mark - IMPAGE PICKER CONTROLLER DELEGATE

- (void)imagePickerController:(UIImagePickerController *)picker
didFinishPickingMediaWithInfo:(NSDictionary *)info
{
    NSString *CellIdentifier = @"cellProfileSnap";
    UITableViewCell *cell = [self.tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:_indexForPicker];
    UIImageView *imgViewPhoto = (UIImageView *) [cell viewWithTag:4];
    _lastChosenMediaType = info[UIImagePickerControllerMediaType];
    UIImage *chosenImage = info[UIImagePickerControllerEditedImage];
    UIImage *shrunkenImage = [self shrinkImage:chosenImage toSize:imgViewPhoto.bounds.size];
    imgViewPhoto.image = shrunkenImage;
    NSLog(@"%ld - %ld %ld",(long)_indexForPicker.row,(long)imgViewPhoto.tag,(long)cell.tag);

    [picker dismissViewControllerAnimated:YES completion:NULL];
}


- (void)getIndexPathAtSection:(id)sender{

    UITableViewCell *uhm = [self.tableView dequeueReusableCellWithIdentifier:@"cellProfileSnap"];
    NSIndexPath *indexPath = [self.tableView indexPathForCell:uhm];
    _indexForPicker = indexPath;
    NSLog(@"%ld",(long)_indexForPicker.row);
}

The _indexPathForPicker is always 0.

Please help me!

Answer 1

You can access the NSIndexPath of the UITableViewCell selected by implementing the - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath; method.

When you touch that cell to add a photo, it will fire that method. You can then access the row via the indexPath.row argument.

edit

You should also not dequeue a cell yourself. You should acquire a cell by using tableView:cellForRowAtIndexPath:

Change

UITableViewCell *cell = [self.tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:_indexForPicker];

to

UITableViewCell *cell = [self.tableView cellForRowAtIndexPath:[self.tableView indexPathForSelectedRow]];