Reputation: 418
I have a scrollview inside each cell in my tableview, although the pictures embed in my scrollview don't show up until i scroll the tableview up and down... I have a custom class with a @property for the scrollview and the cell. I have my code for setting the scrollview in the cellForRowAtIndexPath: method. This should be called upon initial creation of the cells as well? Im confused.
How can I get rid of the problem and make the images appear at first when I start the app?
Related code:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *cellID = @"CustomID";
CustomCell *cell = [tableView dequeueReusableCellWithIdentifier:cellID];
if (cell == nil) {
cell = [[CustomCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellID];
}
for (int i = 0; i < [imageArray count]; i++) {
CGRect frame;
frame.origin.x = cell.scrollView.frame.size.width * i;
frame.origin.y = 0;
frame.size = cell.scrollView.frame.size;
UIImageView *imageView = [[UIImageView alloc] initWithFrame:frame];
imageView.image = [UIImage imageNamed:[imageArray objectAtIndex:i]];
[cell.scrollView addSubview:imageView];
}
cell.scrollView.contentSize = CGSizeMake(cell.scrollView.frame.size.width * [imageArray count], cell.scrollView.frame.size.height);
return cell;
}
Upvotes: 0
Views: 563
Reputation: 14068
This is not exactly related to your question but you will run into this issue too:
Don't forget that your cells will be reused. Upon reusage (lets say the user scrolls down, a cell is moved upwards off the screen and the next that appears on the bottom will be physically the instance of CustomCell that just disappeard and was reused.)
Therefore add:
for (UIView *aView in [NSArray arrayWithArray:cell.subviews]) {
[aView removeFromSuperview];
// if you don't arc then release them and take care of their subviews - if any.
}
before adding any new UIImageView. (I thought there was a method for removing all subviews in one go but did not find it)
Upvotes: 1