ios uitableview里点击界面退出键盘的实现

①给UITableView增加一个tap的手势:

    //增加tap手势，点击使退出键盘    UITapGestureRecognizer * tapGesture = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(dismissKeyBoard)];    tapGesture.cancelsTouchesInView = NO;    [self.tableView addGestureRecognizer:tapGesture];

}-(void)dismissKeyBoard{    [self.searchBar resignFirstResponder];}

可以使得点在子控件上，不会响应手势：

tapGesture.cancelsTouchesInView = NO;