How do I programmatically select a UITableView
row so that
- (void)tableView:(UITableView *)tableView
didSelectRowAtIndexPath:(NSIndexPath *)indexPath
gets executed? selectRowAtIndexPath
will only highlight the row.
This question is related to
iphone
objective-c
cocoa-touch
uitableview
There are two different methods for iPad and iPhone platforms, so you need to implement both:
segue.
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:0 inSection:0];
[self.tableView selectRowAtIndexPath:indexPath animated:NO scrollPosition:UITableViewScrollPositionNone];
// Selection handler (for horizontal iPad)
[self tableView:self.tableView didSelectRowAtIndexPath:indexPath];
// Segue (for iPhone and vertical iPad)
[self performSegueWithIdentifier:"showDetail" sender:self];
Like Jaanus told:
Calling this (-selectRowAtIndexPath:animated:scrollPosition:) method does not cause the delegate to receive a tableView:willSelectRowAtIndexPath: or tableView:didSelectRowAtIndexPath: message, nor will it send UITableViewSelectionDidChangeNotification notifications to observers.
So you just have to call the delegate
method yourself.
For example:
Swift 3 version:
let indexPath = IndexPath(row: 0, section: 0);
self.tableView.selectRow(at: indexPath, animated: false, scrollPosition: UITableViewScrollPosition.none)
self.tableView(self.tableView, didSelectRowAt: indexPath)
ObjectiveC version:
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:0 inSection:0];
[self.tableView selectRowAtIndexPath:indexPath
animated:YES
scrollPosition:UITableViewScrollPositionNone];
[self tableView:self.tableView didSelectRowAtIndexPath:indexPath];
Swift 2.3 version:
let indexPath = NSIndexPath(forRow: 0, inSection: 0);
self.tableView.selectRowAtIndexPath(indexPath, animated: false, scrollPosition: UITableViewScrollPosition.None)
self.tableView(self.tableView, didSelectRowAtIndexPath: indexPath)
Swift 3/4/5 Solution
Select Row
let indexPath = IndexPath(row: 0, section: 0)
tblView.selectRow(at: indexPath, animated: true, scrollPosition: .bottom)
myTableView.delegate?.tableView!(myTableView, didSelectRowAt: indexPath)
DeSelect Row
let deselectIndexPath = IndexPath(row: 7, section: 0)
tblView.deselectRow(at: deselectIndexPath, animated: true)
tblView.delegate?.tableView!(tblView, didDeselectRowAt: indexPath)
Use this category to select a table row and execute a given segue after a delay.
Call this within your viewDidAppear
method:
[tableViewController delayedSelection:withSegueIdentifier:]
@implementation UITableViewController (TLUtils)
-(void)delayedSelection:(NSIndexPath *)idxPath withSegueIdentifier:(NSString *)segueID {
if (!idxPath) idxPath = [NSIndexPath indexPathForRow:0 inSection:0];
[self performSelector:@selector(selectIndexPath:) withObject:@{@"NSIndexPath": idxPath, @"UIStoryboardSegue": segueID } afterDelay:0];
}
-(void)selectIndexPath:(NSDictionary *)args {
NSIndexPath *idxPath = args[@"NSIndexPath"];
[self.tableView selectRowAtIndexPath:idxPath animated:NO scrollPosition:UITableViewScrollPositionMiddle];
if ([self.tableView.delegate respondsToSelector:@selector(tableView:didSelectRowAtIndexPath:)])
[self.tableView.delegate tableView:self.tableView didSelectRowAtIndexPath:idxPath];
[self performSegueWithIdentifier:args[@"UIStoryboardSegue"] sender:self];
}
@end
UITableView's selectRowAtIndexPath:animated:scrollPosition: should do the trick.
Just pass UITableViewScrollPositionNone
for scrollPosition and the user won't see any movement.
You should also be able to manually run the action:
[theTableView.delegate tableView:theTableView didSelectRowAtIndexPath:indexPath]
after you selectRowAtIndexPath:animated:scrollPosition:
so the highlight happens as well as any associated logic.
if you want to select some row this will help you
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:0 inSection:0];
[someTableView selectRowAtIndexPath:indexPath
animated:NO
scrollPosition:UITableViewScrollPositionNone];
This will also Highlighted the row. Then delegate
[someTableView.delegate someTableView didSelectRowAtIndexPath:indexPath];
Source: Stackoverflow.com