UITableView reloadData automatically calls resignF

Question

I have this UITableView with custom cells that can get only predefined values, therefore I use a UIPickerView as their inputView. All is jolly good until I edit a field and need to show its updated value.

In order to make things clearer and easier to maintain, I made delegates and data sources as separate classes, and use notifications to make them interact with the tableView. So, after a value has been chosen from the UIPickerView, the tableView's data source gets notified, and in turn notifies the main ViewController that holds a reference to the tableView. From there I call

[_tableView reloadData];

and everything seems to work, except that the UIPickerView disappears, I think because the cells are regenerated and somewhere some resignFirstResponder is called, or something like that. Is there any other way to make the tableView updating its values without having to implement a custom method somewhere that does it, which would be quite ugly?

Answer 1

customTextField.canResign = NO;
[self.tableView reloadData];
customTextField.canResign = YES;

Custom text field is derived from UITextField.

.h

@interface CustomTextField : UITextField
@property (nonatomic,assign) BOOL canResign;
@end

.m

- (BOOL)canResignFirstResponder
{
    return self.canResign;
}

Make sure that your custom text field is not recreated on table view reloading.