首先要知道你是如何处理使得UISearchBar失去焦点的，那么我的办法一会你可以看一下，同时还有一个问题解决，就是如何是的CancelButton不失去操作的功能：

代码如下

-(void) scrollViewWillBeginDecelerating:(UIScrollView *)scrollView
{
    [self.personSearch resignFirstResponder];
    
    self.personSearch.showsCancelButton=YES;
    for(id control in [self.personSearch subviews])
    {
        if ([control isKindOfClass:[UIButton class]])
        {
            UIButton * btn =(UIButton *)control;
            [btn setTitle:@"取消" forState:UIControlStateNormal ];
            btn.enabled=YES;
        }
    }
}