UITextField inside UITableViewCell: becomeFirstResponder in didSelectRowAtIndexPath - ios

Question

I am currently trying to get this working. Any help is appreciated.
I have a custom UITableViewCell that has a UITextField inside. When I select the table cell, I would like to make the UITextField first Responder.
However [textField becomeFirstResponder]; returns false.
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [self tableView:tableView cellForRowAtIndexPath:indexPath];
UITextField *textField;
for (UIView *view in [cell subviews]) {
if ([view isMemberOfClass:[UITextField class]]) {
textField = ((UITextField *)view);
}
}
[textField becomeFirstResponder];
}
As requested, the initialisation of the textfield. This is done in the UITableViewCell subclass:
- (id) initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier {
self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
if (self) {
// Init Textfield
_textField = [[UITextField alloc] init];
_textField.backgroundColor = [UIColor clearColor];
_textField.delegate = self;
[self addSubview:_textField];
}
return self;
}

Answer 1

If you have a custom cell, then you can do something like this:
#implementation CustomCell
#pragma mark - UIResponder
- (BOOL)canBecomeFirstResponder
{
return YES;
}
- (BOOL)becomeFirstResponder
{
return [self.textField becomeFirstResponder];
}
#end
Then inside the table view delegate:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
if ([cell canBecomeFirstResponder]) {
[cell becomeFirstResponder];
}
}

Answer 2

Give tag for each UITextField and and use Following code:
UITableViewCell* cell = (UITableViewCell*)sender.superview.superview;
UITextField *txtField = (UITextField*)[cell viewWithTag:tag];
[txtField becomeFirstResponder];
In didSelectRowAtIndexPath method.
Its working very good.. :)

Answer 3

I believe you need to set you textField's delegate property.
Add textField.delegate = self; to your method, before you call [textField becomeFirstResponder]

Answer 4

I think you should include a tag value on the textfield when creating the cell:
- (id) initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier {
self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
if (self) {
// Init Textfield
_textField = [[UITextField alloc] init];
_textField.backgroundColor = [UIColor clearColor];
_textField.delegate = self;
_textField.tag = 999;
[self addSubview:_textField];
}
return self;
}
And on the didSelectRowAtIndexPath method use the tag value to recover the object:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [self tableView:tableView cellForRowAtIndexPath:indexPath];
UITextField *textField = (UITextField*)[cell viewWithTag:999];
if (![textField isFirstResponder]){
[textField becomeFirstResponder];
}
}
I've including a validation to control if the textfield is already the first responder.
Hope it works as you expect

Answer 5

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [self tableView:tableView cellForRowAtIndexPath:indexPath];
UITextField *textField;
for (id subV in [cell subviews]) {
if ([subV isKindOfClass:[UITextField class]]) {
textField = (UITextField *)subV;
[textField becomeFirstResponder];
break;
}
}
}
I think it will be helpful to you.

Answer 6

Updated the answer from #josh-fuggle to use Swift 2.2.
import Foundation
import UIKit
class CustomTableCell:UITableViewCell {
#IBOutlet var textValue: UITextField!
override func canBecomeFirstResponder() -> Bool {
return true
}
override func becomeFirstResponder() -> Bool {
return self.textValue.becomeFirstResponder()
}
}
And this is in your table view delegate:
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
let cell = tableView.cellForRowAtIndexPath(indexPath)
if ((cell?.canBecomeFirstResponder()) != nil) {
cell?.becomeFirstResponder()
}
}

Answer 7

You can do something like this:
class CustomCell: UITableViewCell {
#IBOutlet weak var textField: UITextField!
override func awakeFromNib() {
super.awakeFromNib()
let tapGesture = UITapGestureRecognizer(target: self, action: #selector(contentViewTapped))
self.contentView.addGestureRecognizer(tapGesture)
}
#objc func contentViewTapped() {
_ = self.textField.becomeFirstResponder()
}
}

Answer 8

[self.titleLab performSelector:#selector(becomeFirstResponder) withObject:nil afterDelay:0.2];