当从一个页面push 到下个页面时,隐藏tabBar的方法:

如:DetailViewController

DetailViewController *detailVC =[[DetailViewController alloc] init];

//在push之前先设置hidesBottomBarWhenPushed 为 YES,表示显示tabBar;

self.hidesBottomBarWhenPushed = YES;

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

[detailVC release];

//push之后,hidesBottomBarWhenPushed 设为NO,表示隐藏tabBar

self.hidesBottomBarWhenPushed = NO;