返回指定的 的界面控制器

- (void)Backbtnclick:(UIButton *)button {
    NSLog(@"qqqqqqq");
    if ([_fanhuiBiaoZhi isEqualToString:@"1"]) {
        for (UIViewController *vc in self.navigationController.viewControllers) {
            if ([vc isKindOfClass:[PerSonViewController class]]) {
                [self.navigationController popToViewController:vc animated:YES];
            }
        }
    } else {
        
        [self.navigationController popViewControllerAnimated:YES];
    }
}