设置UITableView中单元格的默认选中

-(void)viewWillAppear:(BOOL)animated

{

           [super viewWillAppear:animated];

          NSInteger selectedIndex=0;

          NSIndexPath *seletedIndexPath=[NSIndexPath indexPathForRow:selectedIndex inSection:0];

          [tableView selectRowAtIndexPath:seletedIndexPath animated:YES scrollPosition:UITableViewScrollPositionNone];

}