问题
I am creating an application for the iPad, and I want to show an UIPopoverController
with an arrow pointing to the detail disclosure button for the row it belongs to. I want to do this in the tableView:accessoryButtonTappedForRowWithIndexPath:
method. Currently I have this, with a dummy CGRect
:
- (void)tableView:(UITableView *)tableView accessoryButtonTappedForRowWithIndexPath:(NSIndexPath *)indexPath {
// Dismiss in the case it shows itself somewhere else
[addFeedPopup dismissPopoverAnimated:YES];
// Set up
TNSubscribeToFeedController *subscribeToFeedController = [[TNSubscribeToFeedController alloc] initWithNibName:@"SubscribeToFeed" bundle:nil];
UINavigationController *subscribeToFeedNavigationController = [[UINavigationController alloc] initWithRootViewController:subscribeToFeedController];
subscribeToFeedController.title = @"Subscribe to feed";
subscribeToFeedController.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCancel target:self action:nil];
subscribeToFeedController.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:nil];
/*
* Note that we use the UINavigationController pure for the nices UINavigationBar.
*/
// Show in popup
addFeedPopup = [[UIPopoverController alloc] initWithContentViewController:subscribeToFeedNavigationController];
addFeedPopup.popoverContentSize = CGSizeMake(480, 320);
[addFeedPopup presentPopoverFromRect:CGRectMake(0, 0, 20, 20) inView:self.view permittedArrowDirections:UIPopoverArrowDirectionLeft animated:YES];
// Memory
[subscribeToFeedNavigationController release];
[subscribeToFeedController release];
}
Also, when the UITableView
is in editing mode, the detail disclosure button is about 60 pixels to the left, since I use this to set up my rows:
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:@"SectionTwoCell"] autorelease];
}
cell.textLabel.text = [NSString stringWithFormat:@"Feed %d", indexPath.row];
cell.detailTextLabel.text = @"Description";
cell.accessoryType = UITableViewCellAccessoryDetailDisclosureButton;
cell.editingAccessoryType = cell.accessoryType;
//^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^//
// TWO LINES BACK DEAR SO USER //
Can anyone help me with this problem? Thanks.
Oh, and is it also possible to disable scrolling and disable selecting anything until the UIPopoverController
is closed (perfectionism)?
回答1:
To do what you want, you need an accessoryView and setting the accessoryType does not create one. However, it will work if you create a button and set it as the cell.accessoryView.
Create and set the accessoryView when the cell is created:
...
UIButton *disclosureButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
[disclosureButton addTarget:self action:@selector(discloseDetails:) forControlEvents:UIControlEventTouchUpInside];
cell.accessoryView = disclosureButton;
...
Replace tableView:accessoryButtonTappedForRowWithIndexPath: with discloseDetails:. This looks much like what you have before so I've only put the changes below:
- (void) discloseDetails:(UIButton *)sender {
...
UITableViewCell *cell = (UITableViewCell *) sender.superview;
NSIndexPath *indexPath = [self.tableView indexPathForCell:cell]; // if needed
[addFeedPopup presentPopoverFromRect:cell.accessoryView.bounds inView:cell.accessoryView permittedArrowDirections:UIPopoverArrowDirectionLeft animated:YES];
...
}
If you don't need the cell, it can be made even simpler:
- (void) discloseDetails:(UIButton *)sender {
...
[addFeedPopup presentPopoverFromRect:sender.bounds inView:sender permittedArrowDirections:UIPopoverArrowDirectionLeft animated:YES];
...
}
Here's what it looks like
来源:https://stackoverflow.com/questions/3171637/show-a-uipopovercontroller-from-a-detail-disclosure-button-in-a-uitableviewcell