How to call an action from a Custom UITableViewCell for reload tableView

Question

I have a simple problem: I can't call "[tableView reloadData]" from a UIButton in an UITableViewCell .m.

I have a tableView that show the UITableViewCell that contain a UIButton on each row. When I click on the button of the cell, I want to reloadData from my tableView.

Answer 1

As long as you hold a reference to your tableView, you should be able to reload the data by hitting a button. The easiest way to do this is to make a reference in your header file

@interface MyClass ... {
    UITableView *myTableView;
    // all your other stuff;
}
// any methods and properties you want to declare;
@end

Then when you put your buttons into the cell in your - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath method, do something like the following

UIButton *myButton = [UIButton buttonWithType:whateverTypeYouPick];
[myButton addTarget:self action:@selector(reloadTableView) forControlEvents:UIControlEventTouchUpInside];
[cell addSubview:myButton];  // or cell.contentView or wherever you want to place it

Then simply set up your action method

- (IBAction)reloadTableView {
    [myTableView reloadData];
    // anything else you would like to do;
}

I tested this out and it works fine for me, so hopefully it does the trick for you as well