Get button click inside UITableViewCell

Question

I have a view controller with a table view and a separate nib for the table cell template. The cell template has some buttons. I want to access the button click along with the index of the cell clicked inside the view controller where I have defined the Table view.

So I have ViewController.h and ViewController.m where I have the UITableView and TableTemplate.h, TableTemplate.m and TableTemplate.xib where I have the nib defined. I want the button click event with cell index in ViewController.m.

Any help on how can I do that?

Answer 1

cell.show.tag=indexPath.row;
     [cell.show addTarget:self action:@selector(showdata:) forControlEvents:UIControlEventTouchUpInside];

-(IBAction)showdata:(id)sender
{
    UIButton *button = (UIButton *)sender;

    UIStoryboard *storyBoard;
    storyBoard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
    SecondViewController *detailView = [storyBoard instantiateViewControllerWithIdentifier:@"SecondViewController"];

    detailView.string=[NSString stringWithFormat:@"%@",[_array objectAtIndex:button.tag]];

    [self presentViewController:detailView animated:YES completion:nil];

}

Answer 2

Swift 3 with a Closure

A nice solution is using a closure in a custom UITableViewCell to callback to the viewController for an action.

In cell:

final class YourCustomCell: UITableViewCell {

    var callbackClosure: (() -> Void)?

    // Configure the cell here
    func configure(object: Object, callbackClosure: (() -> Void)?) {
       self.callbackClosure = callbackClosure
    }


// MARK: - IBAction
extension YourCustomCell {
    @IBAction fileprivate func actionPressed(_ sender: Any) {
        guard let closure = callbackClosure else { return }
        closure()
    }
}

In View Controller: Tableview Delegate

extension YourViewController: UITableViewDelegate {

    func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
        guard let cell: YourCustomCell = cell as? YourCustomCell else { return }
        cell.configure(object: object, callbackClosure: { [weak self] in
            self?.buttonAction()
        })
     }
 }

fileprivate extension YourViewController {

    func buttonAction() {
        // do your actions here 
    }
}

Answer 3

Use Swift closures :

class TheCell: UITableViewCell {

    var tapCallback: (() -> Void)?

    @IBAction func didTap(_ sender: Any) {
        tapCallback?()
    }
}

extension TheController: UITableViewDataSource {
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
            let cell = tableView.dequeueReusableCell(withIdentifier: TheCell.identifier, for: indexPath) as! TheCell {
            cell.tapCallback = {
                //do stuff
            }
            return cell
    }
}

Answer 4

Its Work For me.

 - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
     UIButton *Btn_Play = (UIButton *)[cell viewWithTag:101];
     [Btn_Play addTarget:self action:@selector(ButtonClicked:) forControlEvents:UIControlEventTouchUpInside];
}
-(void)ButtonClicked:(UIButton*)sender {
     CGPoint buttonPosition = [sender convertPoint:CGPointZero toView:self.Tbl_Name];
     NSIndexPath *indexPath = [self.Tbl_Name indexPathForRowAtPoint:buttonPosition];
}

Answer 5

@Mani answer is good, however tags of views inside cell's contentView often are used for other purposes. You can use cell's tag instead (or cell's contentView tag):

1) In your cellForRowAtIndexPath: method, assign cell's tag as index:

cell.tag = indexPath.row; // or cell.contentView.tag...

2) Add target and action for your button as below:

[cell.yourbutton addTarget:self action:@selector(yourButtonClicked:) forControlEvents:UIControlEventTouchUpInside];

3) Create method that returns row of the sender (thanks @Stenio Ferreira):

- (NSInteger)rowOfSender:(id)sender
{
    UIView *superView = sender.superview;
    while (superView) {
        if ([superView isKindOfClass:[UITableViewCell class]])
            break;
        else
            superView = superView.superview;
    }

    return superView.tag;
}

4) Code actions based on index:

-(void)yourButtonClicked:(UIButton*)sender
{
     NSInteger index = [self rowOfSender:sender];
     // Your code here
}

Answer 6

Tarun's code doesnt work on iOS7, since the UITableViewCell structure changed and now he would get "UITableViewCellScrollView" instead.

This post Getting UITableViewCell with superview in iOS 7 has a good solution creating a loop to find the correct parent view, regardless of any future changes in the structure. It boils down to creating a loop:

    UIView *superView = [sender superview];
    UIView *foundSuperView = nil;

    while (nil != superView && nil == foundSuperView) {
        if ([superView isKindOfClass:[UITableViewCell class]]) {
            foundSuperView = superView;
        } else {
            superView = superView.superview;
        }
    }

The link has code for a more reusable solution, but this should work.