Scroll to a textfield on a table when tapped

gistfile1.m

//We need some properties
@property (nonatomic,strong) NSMutableArray *dataSource;
@property (nonatomic, strong) UITextField *currentTextField;
@property (nonatomic) CGRect originalTableFrame;
@property (nonatomic) NSIndexPath *indexForCurrentTextField;
@property (nonatomic) NSTimeInterval keyboardAnimationDuration;

//Don't forget to be delegate of UITextFieldDelegate

//Then...

#pragma mark - TextField delegate
-(BOOL)textFieldShouldBeginEditing:(UITextField *)textField
{
    if (!self.currentTextField)
    {
        self.currentTextField = textField;
        
        UITableViewCell *t = (UITableViewCell *)[[textField superview] superview];        
        self.indexForCurrentTextField = [self.tableView indexPathForCell:t];

    }
    else return NO;

    return YES;
}

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




-(BOOL)textFieldShouldEndEditing:(UITextField *)textField
{
    return YES;
}

-(void)textFieldDidEndEditing:(UITextField *)textField
{
//    self.tableView.frame= CGRectMake(self.tableView.frame.origin.x, self.tableView.frame.origin.y, self.tableView.frame.size.width, self.tableView.frame.size.height + 190);
    
    Item *i = [self.dataSource objectAtIndex:[self.indexForCurrentTextField row]];
 
 	// do some magic...
 	
    self.currentTextField = nil;


}

#pragma mark - Keyboard
- (void)registerForKeyboardNotifications
{
    
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(keyboardWillBeHidden:)
                                                 name:UIKeyboardWillHideNotification object:nil];

    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(keyboardWillShow:)
                                                 name:UIKeyboardWillShowNotification object:nil];
    
    
}

- (void)keyboardWillShow:(NSNotification*)aNotification
{
    NSDictionary* info = [aNotification userInfo];
    CGSize kbSize = [[info objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue].size;
    CGFloat height;
    CGRect f = self.originalTableFrame;
    
    NSValue* value = [info objectForKey:UIKeyboardAnimationDurationUserInfoKey];
    NSTimeInterval duration = 0;
    [value getValue:&duration];
    self.keyboardAnimationDuration = duration;
    
    
    //Están intercambiados
    if (![Misc orientationIsPortrait]) {
        height = kbSize.width;
    }
    else
    {
        height = kbSize.height;
    }
    
    f.size.height-=height;
    
    [UIView animateWithDuration:self.keyboardAnimationDuration
                          delay:0.0
                        options: UIViewAnimationCurveEaseOut
                     animations:^{
                         
                         [self.tableView setFrame:f];
                         
                         [self.tableView scrollToRowAtIndexPath:self.indexForCurrentTextField atScrollPosition:UITableViewScrollPositionBottom animated:NO];
                         
                     }
                     completion:^(BOOL finished){
                         
                     }];
    

}



// Called when the UIKeyboardWillHideNotification is sent
- (void)keyboardWillBeHidden:(NSNotification*)aNotification
{
    [UIView animateWithDuration:self.keyboardAnimationDuration
                          delay:0.0
                        options: UIViewAnimationCurveEaseOut
                     animations:^{
                          [self.tableView setFrame:self.originalTableFrame];
                         
                     }
                     completion:^(BOOL finished){
                         
                     }];
    
   
}