Question

In my iPhone application, I have a UITableView and this contains a UIImageView, button and Label. I am updating my database as per the values from the server and updating the details in the tableview. If I run the app for second time, after some modification at the server, the imageview is not getting updated. Button and label are updating. When I checked the local path for the image from the database, it shows the new image in the documents folder but the table cell still shows the old one. To the see the updated image, I should reinstall the app. What should I do to fix this issue?

Here is the work flow of what I did:

1. Loading new values from the database, and keeping all the values in an array
2. Removing the tableview
3. Creating the tableview again
4. Reload tableview.

Edit
//creating custom cell for the table view for displaying different objects

- (UIMenuItemCell *) getCellContentView:(NSString *)cellIdentifier {

    CGRect CellFrame = CGRectMake(0, 0, 150, 60);
    CGRect Label1Frame = CGRectMake(20, 23, 98, 30);
    CGRect imgFrame = CGRectMake(20, 48, 110, 123);
    CGRect btnFrame = CGRectMake(25, 136, 100, 30);

    UILabel *lblTemp;
    UIImageView *itemImg;
    UIButton *itemBtn;

    UIMenuItemCell *cell = [[UIMenuItemCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier];
    cell.frame = CellFrame;

    //Initialize Label with tag 1.  
    lblTemp = [[UILabel alloc] initWithFrame:Label1Frame];
    lblTemp.tag = 1;
    lblTemp.textColor=[UIColor colorWithRed:139.0f/255.0f green:69.0f/255.0f blue:19.0f/255.0f alpha:1.0f];
    lblTemp.textAlignment = UITextAlignmentCenter;
    lblTemp.backgroundColor = [UIColor clearColor];
    lblTemp.font = [UIFont systemFontOfSize:13.0];
    [cell.contentView addSubview:lblTemp];
    [lblTemp release];

    //Initialize ImageView
    itemImg = [[UIImageView alloc]initWithFrame:imgFrame];
    itemImg.tag = 2;
    [cell.contentView addSubview:itemImg];
    [itemImg release];

    //Initialize Button
    itemBtn = [[UIButton alloc]initWithFrame:btnFrame];
    itemBtn.frame = btnFrame;
    itemBtn.tag = 3;
    itemBtn.titleLabel.textColor = [UIColor blueColor];
    itemBtn.titleLabel.font = [UIFont systemFontOfSize:9.0];
    [cell.contentView addSubview:itemBtn];
    [itemBtn release];


    return cell;
}

// Customize the appearance of table view cells.

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

        NSString *CellIdentifier = [NSString stringWithFormat:@"Cell%d", indexPath.row];

        UIMenuItemCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];


        if(cell == nil){
            cell = [self getCellContentView:CellIdentifier];

            cell.transform = CGAffineTransformMakeRotation(M_PI_2);
            cell.selectionStyle = UITableViewCellSelectionStyleNone;

            cell.cellItemName = (UILabel *)[cell viewWithTag:1];
            cell.cellitemImage = (UIImageView *)[cell viewWithTag:2];
            cell.cellItemButton = (UIButton *)[cell viewWithTag:3];

            DataBaseClass *itemObj = [appDelegate.itemArray objectAtIndex:indexPath.row];

            NSString *imageLocalFilePath = nil;
            if ([[tempitemStatusArray objectAtIndex:indexPath.row] isEqualToString:@"NotAvailable"]) {
                cell.cellItemProgress.hidden = YES;
                cell.cellItemButton.hidden = NO;
                imageLocalFilePath = [NSString stringWithFormat:@"%@",[tempItemLocalNotAvailPath objectAtIndex:indexPath.row]];
                NSString *date = [self changeDateFormat:itemObj.itemReleaseDate];          
                [cell.cellItemButton setTitle:date forState:UIControlStateNormal]; 
                cell.cellItemButton.userInteractionEnabled = NO;
                cell.userInteractionEnabled = NO;
                [cell.cellItemButton removeTarget:nil action:NULL forControlEvents:UIControlEventAllEvents];
                [cell.cellItemButton setBackgroundImage:[UIImage imageNamed:@"not_available_bttn_bck_img"] forState:UIControlStateNormal];
            }else if ([[tempitemStatusArray objectAtIndex:indexPath.row] isEqualToString:@"Available"]){
                cell.cellItemButton.userInteractionEnabled = YES;
                cell.userInteractionEnabled = YES;
                cell.cellItemProgress.hidden = YES;
                [cell.cellItemButton setTitle:@"" forState:UIControlStateNormal];
                [cell.cellItemButton setBackgroundImage:[UIImage imageNamed:@"available_bttn_img_normal"] forState:UIControlStateNormal];
                [cell.cellItemButton setBackgroundImage:[UIImage imageNamed:@"available_bttn_img_pressed"] forState:UIControlStateHighlighted];
                [cell.cellItemButton removeTarget:nil action:NULL forControlEvents:UIControlEventAllEvents];
                [cell.cellItemButton addTarget:self action:@selector(confirmationAlert:) forControlEvents:UIControlEventTouchUpInside];
                imageLocalFilePath = [NSString stringWithFormat:@"%@",[tempItemLocalAvailPath objectAtIndex:indexPath.row]];
            }
            if ([imageLocalFilePath isEqualToString:@""]) {
                [cell.cellitemImage setImage:[UIImage imageNamed:@"item01.png"]];
            }else {
                [cell.cellitemImage setImageWithURL:[NSURL fileURLWithPath:imageLocalFilePath] placeholderImage:[UIImage imageNamed:@"item01.png"]];
            }        
            cell.cellItemName.text = [NSString stringWithFormat:@"%@",[tempItemNameArray objectAtIndex:indexPath.row]];
        }

        return cell;
    }

Please help.

Answer 1

I found the issue, in the cellForRowAtIndexPath method, for setting the image, I used the code

[cell.cellitemImage setImageWithURL:[NSURL fileURLWithPath:imageLocalFilePath] placeholderImage:[UIImage imageNamed:@"item01.png"]];

I used a external classes calls ImageLoading for loading the images and that classes included some cache methods, and that caused the issue. So I changed that line to

[cell.cellitemImage setImage:[UIImage imageWithContentsOfFile:imageLocalFilePath]];

that solved the issue.

Thanks for your support 🙂