Question

When i scroll the tableview up and down the content in the cells gets overlapped, Why is this and how can i correct it ?

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NS

IndexPath *)indexPath
    {

        static NSString *CellIdentifier = @"Cell";

        UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

        if (cell == nil) {

            cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:CellIdentifier] ;

        }

            UITextField* tf = nil ;

                switch ( indexPath.row ) {

                    case 0: {

                        cell.textLabel.text = @"First Name" ;

                        tf = firstNameTextField = [self makeTextField:self. placeholder:@"F name"];

                        [cell.contentView addSubview:firstNameTextField];

                        break ;

                    }

                    case 1: {

                        cell.textLabel.text = @"Last Name" ;

                        tf = lastNameTextField = [self makeTextField:self.lastName placeholder:@"L name"];

                        [cell.contentView addSubview:lastNameTextField];

                        break ;

                    }

                    case 2: {

                        cell.textLabel.text = @"age" ;

                        tf = agetextfield = [self makeTextField:self.password placeholder:@"Age"];

                        [cell.contentView addSubview:agetextfield];


                        break ;

                    }


                }
                return cell;

Answer 1

The cells were reused in this case. So the cells are overlapped on others. Just modify your code to resolve this.

  - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{

    static NSString *CellIdentifier = @"Cell";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

    if (cell == nil) {

        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:CellIdentifier] ;
        UITextField* tf = nil ;
        for(UIView *view in [cell subViews]){

            if([view isKindOfClass:[UITextFiel class]]){

                  [view removeFromSuperView];
                 }
        }
            switch ( indexPath.row ) {

                case 0: {

                    cell.textLabel.text = @"First Name" ;

                    tf = firstNameTextField = [self makeTextField:self. placeholder:@"F name"];

                    [cell.contentView addSubview:firstNameTextField];

                    break ;

                }

                case 1: {

                    cell.textLabel.text = @"Last Name" ;

                    tf = lastNameTextField = [self makeTextField:self.lastName placeholder:@"L name"];

                    [cell.contentView addSubview:lastNameTextField];

                    break ;

                }

                case 2: {

                    cell.textLabel.text = @"age" ;

                    tf = agetextfield = [self makeTextField:self.password placeholder:@"Age"];

                    [cell.contentView addSubview:agetextfield];


                    break ;

                }


            }
    }


            return cell;