- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
int newRow=[indexPath row];
int oldRow;
if(self.lastPath==nil)
{
oldRow=-1;
}else {
oldRow=[self.lastPath row];
}
if(newRow!=oldRow)
{
[tableView cellForRowAtIndexPath:indexPath].accessoryType=UITableViewCellAccessoryCheckmark;
[tableView cellForRowAtIndexPath:self.lastPath].accessoryType=UITableViewCellAccessoryNone;
self.lastPath=[indexPath copy];
}
}