UIButton on Custom UITableViewCell
I have a Custom UITableViewCell that has a couple buttons. When the code was all under on开发者_如何学运维e view controller, my button was declared like this:
myButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[myButton addTarget:self
action:@selector(myButtonAction:)
forControlEvents:UIControlEventTouchUpInside];
[myButton setTitle:@"Action" forState:UIControlStateNormal];
myButton.frame = CGRectMake(20, 80, 72, 37);
[self addSubview:myButton];
Last night I subclassed UITableViewCell, so the code became this:
myButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[myButton addTarget:viewController
action:@selector(myButtonAction:)
forControlEvents:UIControlEventTouchUpInside];
[myButton setTitle:@"Action" forState:UIControlStateNormal];
myButton.frame = CGRectMake(20, 80, 72, 37);
[self addSubview:damageButton];
Since doing this, however, pushing the button on any cell causes the action to only effect the first row in the table, and I'm not sure why.
Action code:
UIButton *button = (UIButton *)sender;
UIView *contentView = [button superview];
UITableViewCell *cell = (UITableViewCell *)[contentView superview];
NSIndexPath *indexPath = [[self tableView] indexPathForCell:cell];
//do something with objectAtIndex:indexPath.row
I understand it's common to set the Tag Property to indexPath.row for using a UIButton in a table view. However, I'm using two separate arrays in the data source to populate two different sections of the TableView, so I don't think that will work.
The problem, in the end, was that I was adding the subview to the cell object and not the contentview of the cell object. I changed the button code to this and it was resolved:
UIButton *button = (UIButton *)sender;
UITableViewCell *cell = (UITableViewCell *)[button superview];
NSIndexPath *indexPath = [[self tableView] indexPathForCell:cell];
Don't subclass UITableViewCell (or UITableView), it's usually unnecessary and can cause problems. Table cells have a contentView
which is a great place for customization.
Recommended reading:
http://cocoawithlove.com/2009/04/easy-custom-uitableview-drawing.html
and then:
http://cocoawithlove.com/2010/12/uitableview-construction-drawing-and.html
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