Question

I am currently create a UITableViewCell with a UITextField in it.
On click of the text field, I want to bring up a number keyboard that I created. And as I type, the textfield should check the input for me; on click of other place, the keypad should be dismissed.

Code:

UITableViewCell *sizeCell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:@"sizeCell"];
sizeCell.textLabel.text = @"Size";
UITextField* sizeField = [[UITextField alloc] initWithFrame:CGRectMake(185, 10, 100, 28)];
sizeField.text = @"0";
sizeField.textAlignment = UITextAlignmentRight;
sizeField.textColor = [UIColor colorWithRed:50.0/255.0 green:79.0/255.0 blue:133.0/255.0 alpha:1.0f];
sizeField.backgroundColor = [UIColor clearColor];
sizeField.keyboardType = UIKeyboardTypeDecimalPad;

[sizeCell.contentView addSubview:sizeField]; 

rows = [[NSArray arrayWithObjects:switchCell, typeCell, sizeCell, nil] retain];

I tried to implement UITextFieldDelegate like:

-(BOOL)textFieldShouldReturn:(UITextField *)textField{
   [sizeField resignFirstResponder];
   return YES;
}

but the keyboard doesn’t go away…

How do I validate the input and dismiss the keyboard?

Answer 1

You never set the delegate on your textfield so that textFieldShouldReturn: gets called. Make sure your class conforms to UITextFieldDelegate and then do the following:

...
UITextField* sizeField = [[UITextField alloc] initWithFrame:CGRectMake(185, 10, 100, 28)];
sizeField.delegate = self; //This is important!
sizeField.text = @"0";
...