cell with imageview and button getting reused - ios

Question

I have a table view with many cells. In the first cell I placed a UIImageView to hold a pic and next to it a button that will open up a popOver.
My question is: Why is this cell is getting reused in spite of checking (cell==nil) while others are working fine.
The code is as below.
P.S. This is without using storyboard and xib only programatically.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
if (indexPath.section == 0)
{
if(indexPath.row==0)
{
if(self.imageView==nil)
{
self.imageView = [[UIImageView alloc] initWithFrame:CGRectMake(30, 2, 50, 40)];
self.imageView.image = [UIImage imageNamed:#"user.png"];
self.imageView.backgroundColor=[UIColor blackColor];
}
[cell.contentView addSubview:self.imageView];
if(self.chooseImage==nil)
{
self.chooseImage = [[UIButton alloc]initWithFrame:CGRectMake(270, 10, 80, 30)];
[self.chooseImage addTarget:self action:#selector(chooseImage:) forControlEvents:UIControlEventTouchUpInside];
self.chooseImage.backgroundColor = [UIColor blackColor];
[self.chooseImage setTitle:#"CHOOSE" forState:UIControlStateNormal];
}
[cell.contentView addSubview:self.chooseImage];
}

Answer 1

First in code add at end of the method return cell; and use following code.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
if(self.imageView==nil)
{
self.imageView = [[UIImageView alloc] initWithFrame:CGRectMake(30, 2, 50, 40)];
self.imageView.image = [UIImage imageNamed:#"user.png"];
self.imageView.backgroundColor=[UIColor blackColor];
}
[cell.contentView addSubview:self.imageView];
if(self.chooseImage==nil)
{
self.chooseImage = [[UIButton alloc]initWithFrame:CGRectMake(270, 10, 80, 30)];
[self.chooseImage addTarget:self action:#selector(chooseImage:) forControlEvents:UIControlEventTouchUpInside];
self.chooseImage.backgroundColor = [UIColor blackColor];
[self.chooseImage setTitle:#"CHOOSE" forState:UIControlStateNormal];
}
[cell.contentView addSubview:self.chooseImage];
}
return cell; // this line is not in your code so add this line.
}