Two warnings on - (NSInteger)tableView:(UITableView *)tableView indentationLevelForRowAtIndexPath:(NSIndexPath *)indexPath method - xcode

Question

Am getting two warnings on this method which I have commented out.
How can I fix this? Code below.
Thanks in advance.
#import "ViewController.h"
#interface ViewController ()
#end
#implementation ViewController
#synthesize listData;
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
NSArray *array = [[NSArray alloc] initWithObjects:#"Sleepy", #"Sneezy", #"Bashful", #"Happy", #"Doc", #"Grumpy", #"Dopey", #"Thorin", #"Dorin", #"Nori", #"Ori", #"Balin", #"Dwalin", #"Fili", #"Kili", #"Oin", #"Gloin", #"Bifur", #"Bofur", #"Bombur", nil];
self.listData = array;
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
self.listData = nil;
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}
#pragma mark -
#pragma mark Table View Data Source Methods
- (NSInteger)tableView:(UITableView *)tableView
numberOfRowsInSection:(NSInteger)section
{
return [self.listData count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *SimpleTableIdentifier = #"SimpleTableIdentifier";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:SimpleTableIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc]
initWithStyle:UITableViewCellStyleDefault
reuseIdentifier:SimpleTableIdentifier];
}
UIImage *image = [UIImage imageNamed:#"star.png"];
cell.imageView.image = image;
NSUInteger row = [indexPath row];
cell.textLabel.text = [listData objectAtIndex:row];
if (row < 7)
cell.detailTextLabel.text = #"Mr. Disney";
else
cell.detailTextLabel.text = #"Mr.Tolkien";
return cell;
}
#pragma mark -
#pragma mark Table Delegate Methods
- (NSInteger)tableView:(UITableView *)tableView indentationLevelForRowAtIndexPath:(NSIndexPath *)indexPath
{
NSUInteger row = [indexPath row];
if (row == 0)
return nil; /* Incompatible pointer to integer conversion returning ‘void *' from a function with result type 'NSInteger' (aka 'int').*/
return indexPath; /* Incompatible pointer to integer conversion returning ‘NSIndexPath*_strong' from a function with result type 'NSInteger' (aka 'int').*/
}
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
NSUInteger row = [indexPath row];
NSString *rowValue = [listData objectAtIndex:row];
NSString *message = [[NSString alloc]
initWithFormat:#"You selected %#", rowValue];
UIAlertView *alert = [[UIAlertView alloc]
initWithTitle:#"Row selected"
message:message
delegate:nil
cancelButtonTitle:#"Yes I Did"
otherButtonTitles: nil];
[alert show];
}
#end

Answer 1

The function specifies it will return an NSInteger, returning nil or NSIndexPath will break that promise. What about:
NSInteger row = (NSInteger)[IndexPath row]; //casts the NSUInteger to NSInteger
if (row == 0)
{
return 0;
}
return row;