UITableView -cell buttons not showing up - objective-c

Question

At one point my cell buttons were showing up when my scroll view was much wider. I made it smaller and my buttons have disappeared. I've played around with the frame but it doesn't seem to work. Any suggestions?
- (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]autorelease];
UIButton*button= [UIButton buttonWithType:UIButtonTypeCustom];
button.frame = CGRectMake(10.0, 0.0, 20,20);
[button setTitle:#"Tap" forState:UIControlStateNormal];
button.backgroundColor= [UIColor blackColor];
[button addTarget:self action:#selector(buttonTapped:) forControlEvents:UIControlEventTouchUpInside];
cell.accessoryView = button;
[cell.contentView addSubview:button];
}
NSString *cellValue = [selection objectAtIndex:indexPath.row];
cell.textLabel.text = cellValue;
return cell;

Answer 1

you have to implement custom button outside if condition as u wrote. you will have to write - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath method as below:
- (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];
}
//custom button outside if condition
UIButton*button= [UIButton buttonWithType:UIButtonTypeCustom];
button.frame = CGRectMake(10.0, 0.0, 20,20);
[button setTitle:#"Tap" forState:UIControlStateNormal];
button.backgroundColor= [UIColor blackColor];
[button addTarget:self action:#selector(buttonTapped:) forControlEvents:UIControlEventTouchUpInside];
cell.accessoryView = button;
[cell.contentView addSubview:button];
return cell;
}

Answer 2

For the moment get rid of this statement:
cell.accessoryView = button;