ipad-how to open a popup view controller in a UITableViewCell - ios

Question

These are the files I am working on:
ChecklistViewController.h
ChecklistViewController.m
ChecklistTableViewCell.h
ChecklistTableViewCell.m
ChecklistTableViewCell.xib
DetailViewController.h
DetailViewController.m
DetailViewController.xib
I have a ChecklistViewController which displays a UITableView. Because I needed a different layout for the UITableViewCell, I have subclass UITableViewCell. I have created a nib file ChecklistTableViewCell.xib which has a UITableViewCell that contains a label, button and switch view. i have linked the UITableViewCell to a custom class ChecklistTableViewCell.
I have linked up the necessary outlets from the nib file to ChecklistTableViewCell class, and in ChecklistViewController cellForRowAtIndexPath I'm able to display label text.
In the UITableViewCell class file ChecklistTableViewCell, I have also linked and implemented a IBAction method that will be called when the button is clicked. When this method is called, how do I open DetailViewController as a popup?
Here is the snippet of my IBAction method:
-(IBAction)showPopup:(id)sender
{
NSLog(#"popup");
DetailViewController *vp = [[DetailViewController alloc] init];
vp.modalPresentationStyle = UIModalPresentationFormSheet;
vp.modalTransitionStyle = UIModalTransitionStyleCoverVertical;
vp.view.superview.frame = CGRectMake(0, 0, 540, 620);
}

Answer 1

rdelmar is spot on with his comment. Because presentViewController:animated:completion is a method in the view controller, your ChecklistTableViewCell needs to make the view controller aware of the button click.
You have 2 choices:
Assuming your data source is your view controller, in your view controller:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
ChecklistTableViewCell *cell = ...;
cell.button.tag = indexPath.row; // or whatever appropriate
[cell.button addTarget:self action:#selector(buttonTapped:) forControlEvents:UIControlEventTouchUpInside];
return cell;
}
- (void)buttonTapped:(UIButton *)button
{
DetailViewController *vc = ...; // get your "popup" accordingly using button.tag
[self presentViewController:vc animated:YES completion:nil];
}
Or you can declare a protocol that your view controller adheres to:
// ChecklistTableViewCell.m
#protocol ChecklistTableViewCellDelegate
- (void)buttonTapped:(ChecklistTableViewCell *)sender;
#end
#implementation ChecklistTableViewCell : UITableViewCell
{
...
- (IBAction)showPopup:(id)sender // maybe change the name to something more appropriate
{
if ([self.delegate respondsToSelector:#selector(buttonTapped:)])
{
[self.delegate buttonTapped:self];
}
}
...
}
// ChecklistViewController.m
#implementation ChecklistViewController : ChecklistTableViewCellDelegate
{
...
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
ChecklistTableViewCell *cell = ...;
cell.tag = indexPath.row; // or whatever appropriate
cell.delegate = self;
...
return cell;
}
- (void)buttonTapped:(ChecklistTableViewCell *)sender
{
DetailViewController *vc = ...; // get your "popup" accordingly using sender.tag
[self presentViewController:vc animated:YES completion:nil];
}
...
}

Answer 2

If you want to show a detail view controller as pop up in iPad there is a control called UIPopoverController.
How to use UIPopoverController?
In .h file
UIPopoverController *popoverController;
In .m file
DetailviewController * objViewController = [[DetailviewController alloc]initWithNibName:#"DetailviewController" bundle:nil];
obj.delegate = (id )self; // if DetailViecontroller has any delegate.
popoverController = [[UIPopoverController alloc] initWithContentViewController:objViewController];
popoverController.popoverContentSize = CGSizeMake(320.0, 400.0);
UITableViewCell *cell = [tableView cellForRowAtIndexPath:[NSIndexPath indexPathForRow:theRow inSection:1]];
CGRect rect=CGRectMake(cell.bounds.origin.x+600, cell.bounds.origin.y+10, 50, 30);
[popoverController presentPopoverFromRect:rect inView:self.view permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];