UITableView change image on cell select and reset others

Question

I'd like to change a UIImage which is inside a UITableViewCell when the user selects the row. Thats now too dificult. I can do this in didSelectRowAtIndex just fine. However, and heres the problem, I want the other cells (each cell has standard image) to have the standard image again. (If the cells have the standard image again, the selected image should be "marked" (meaning the non-marked image will be replaced by the marked image, which I already have the code for)

See it as a Checkbox that you know from HTML.

Here is my attempt:

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    [tableView cellForRowAtIndexPath:indexPath];
    [tableView reloadRowsAtIndexPaths:@[indexPath] withRowAnimation:YES];

    //Little flashing animation
    [tableView deselectRowAtIndexPath:indexPath animated:YES];
    [UIView animateWithDuration:2.0f animations:^{

    } completion:^(BOOL finished) {
        ;
    }];

    //Mark the selected cell
    UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
    ALog(@"%i", cell.imageView.tag);
    ALog(@"%i", [[[tableView cellForRowAtIndexPath:indexPath] imageView] tag]);

    UIImageView *iconimgView = (UIImageView *)[[tableView cellForRowAtIndexPath:indexPath] viewWithTag:TAG_IMAGEMARKERCELL];
    [iconimgView setImage:[UIImage imageNamed:@"circle-answer-marked.png"]];

    //..
}

The UIImageView is defined here:

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    static NSString *CellIdentifier = @"Cell";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
        //Add this to cell only once, not everytime a cell is displayed! (Everyhing goes in here)
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
        [[cell textLabel] setNumberOfLines:0]; // unlimited number of lines
        [[cell textLabel] setLineBreakMode:NSLineBreakByWordWrapping];
        [[cell textLabel] setFont:[UIFont fontWithName:@"PTSans-Regular" size:33 / 2]];
        [[cell textLabel] setTextColor:[self colorFromHexString:COLOR_DEFAULT_TEXT_COLOR]];
        cell.indentationLevel = cell.indentationLevel + 2;

        //        //Marker image
        imgCell_Marker = [[UIImageView alloc]initWithFrame:CGRectMake(10, 22, 20, 20)];
        imgCell_Marker.image=[UIImage imageNamed:@"circle-answer.png"];
        imgCell_Marker.tag = TAG_IMAGEMARKERCELL;
        ALog(@"%@", imgCell_Marker);
        [cell.contentView addSubview:imgCell_Marker];
    }

        //..
        return cell;
}

Odd thing is, the UIImageViews have a predefined tag but if I want to get my hands on that in the didSelectRowAtIndexPath its always "0". (the default value of the tag)

Thanks in advance.

Answer 1

Use this block of code:

-(void) tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{   
    [tableView reloadData];
    UITableViewCell *cell = (UITableViewCell *)[tableView cellForRowAtIndexPath:indexPath];
    cell.imageView.image = [UIImage imageNamed:@"image.png"];
}

At first, you set all of your cells to their default condition, and then you change the image of your current cell.