//默认选中某个cell
[self.searchResultTV selectRowAtIndexPath:[NSIndexPath indexPathForRow:0 inSection:0] animated:YES scrollPosition:UITableViewScrollPositionNone];
//实现该cell的didSelectRowAtIndexPath方法
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:0 inSection:0];
if ([self.searchResultTV.delegate respondsToSelector:@selector(tableView:willSelectRowAtIndexPath:)]) {
[self.searchResultTV.delegate tableView:self.searchResultTV willSelectRowAtIndexPath:indexPath];
}
[self.searchResultTV selectRowAtIndexPath:indexPath animated:YES scrollPosition: UITableViewScrollPositionNone];
if ([self.searchResultTV.delegate respondsToSelector:@selector(tableView:didSelectRowAtIndexPath:)]) {
[self.searchResultTV.delegate tableView:self.searchResultTV didSelectRowAtIndexPath:indexPath];
}