Question

I am wondering why this is not working please help me.
Here is my code

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath 

*)indexPath
{
    if (selectedIndexPath == indexPath) {
        selectedIndexPath = nil;
    } else {
        selectedIndexPath = indexPath;
    }
    [self.tableView deselectRowAtIndexPath : indexPath animated : NO];
    [tableView beginUpdates];
    [tableView endUpdates];
}

Answer 1

Make sure you retain your selectedIndexPath so it is not set to nil inadvertently.

@interface YourClass

@property (nonatomic, strong) NSIndexPath *selectedIndexPath;

@end

Then refer to the variable as self.selectedIndexPath and you should be fine.

But there is a second caveat. NSIndexPath is an object, so the operator == will just compare the pointer addresses. Clearly, those will always be different because one is your variable and the other one is the method’s private variable! What you want to use is either

if ([indexPath isEqualTo:selectedIndexPath]) // not tested

or

if (indexPath.row == selectedIndexPath.row && 
    indexPath.section == selectedIndexPath.section)