UITableView, how to handle when rows are clicked? - ios

Question

I can't seem to find how to display another 'UIViewController' view when one row is clicked. So like when the row is clicked it goes to the next view and displays more information about row.
I think I need to use something like the - (void) tableView: (UITableView *) tableView didSelectRowAtIndexPath: (NSIndexPath *) indexPath delegate. Then my second question is how do I pass the data that was in that row, like the title, to the next view controller?
Thanks

Answer 1

If you are using a storyboard:
.h
#interface YourTableViewController : UIViewController
{
// you just need int selectedRow inside of #interface
int selectedRow;
}
.m
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
// this method is going to give you NSIndexPath *indexPath
selectedRow = indexPath;
[self performSegueWithIdentifier:#"nameOfYourSegue" sender:self];
}
You might already have this method, add the code inside of it if that's the case. This method is called when a segue is about to perform.
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if([[segue identifier] isEqualToString:#"nameOfYourSegue"]){
//Pass data from one controller to the next
[[segue destinationViewController] setRowIndex:selectedRow];
}
}
selectedRow is going to have the index of which row was selected with 0 being the first row.
In your next view controller's class:
.h
- (void)setRowIndex:(int)rowIndex;
.m
- (void)setRowIndex:(int)rowIndex
{
//assign your variable to rowIndex
}
Once you have this working, you can edit this code to pass an array of information.

Answer 2

CGPoint buttonPosition = [sender convertPoint:CGPointZero toView:self.tableView];
NSIndexPath *indexPath = [self.tableView indexPathForRowAtPoint:buttonPosition];
UITableViewCell *cell = [self.tableView cellForRowAtIndexPath:indexPath];
NSString *title = cell.textLabel.text;
Like #rmaddy said, Its better if you do some research, This is very basic, I would recommend you the:
http://www.raywenderlich.com/
Site for great tutorial, they really have every thing you need there.

Answer 3

Here is a hypothetical example:
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *selectedCell = [tableView cellForRowAtIndexPath:indexPath];
MyCustomViewController *vc = [[MyCustomViewController alloc]initWithTitle:selectedCell.textLabel.text];
// Assuming your UITableViewDelegate has a navigationController
[self.navigationController presentViewController:vc animated:YES completion:nil];
}

Answer 4

use the method:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
you can get the cell by the index path:
UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
the code:
- (void)tableView:(UITableView *)tblView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
}
after getting the cell data youc can use it
answer to question 2:
you can connect in the interface builder your cell with the next vc by seque and in the method prepareforseque just pass the data to the
segue.destenationViewController.yourPoperty
now in the viewdidload method:
self.title = self.property