可以在基础类中实现以下方法即可
- (void)viewDidAppear:(BOOL)animated{
[super viewDidAppear:YES];
self.hidesBottomBarWhenPushed = YES;//隐藏
}
- (void)viewDidDisappear:(BOOL)animated{
[super viewDidDisappear:YES];
self.hidesBottomBarWhenPushed = NO;//显示
}
原文：http://www.cnblogs.com/xiaobaichangan/p/6692265.html