根据字典提取字串来加载不同的controller

NSString *className = [curDict valueForKey: @"menu_val"];

        Class ctrlClass = NSClassFromString(className);

        

　　//YBaseViewController 是父类

        YBaseViewController *ctrl = [[ctrlClass alloc] init];

        UIBarButtonItem *backItem = [[UIBarButtonItem alloc] initWithTitle:@"" style:UIBarButtonItemStylePlain target:nil action:nil];

        [self.navigationItem setBackBarButtonItem:backItem];

        ctrl.hidesBottomBarWhenPushed = YES;

 

        

        // 跳转

        [self.navigationController pushViewController: ctrl animated: YES];

 

步骤总结：

1、提取字串为NSString；

2、转化为class，Class ctrlClass = NSClassFromString(className);

3、实例化，        YBaseViewController *ctrl = [[ctrlClass alloc] init];

4、呈现。