iOS开发小知识--页面跳转后隐藏Tabbar视图

在有Tabbar的页面A跳转到需要隐藏Tabbar的页面B，需要在B页面实现以下几个方法：

// 进入界面

- (void)viewWillAppear:(BOOL)animated {

    [self setTabBarHidden:YES];

}

//离开界面

- (void)viewWillDisappear:(BOOL)animated {

    [self setTabBarHidden:NO];

}

// 实现

- (void)setTabBarHidden:(BOOL)hidden{

UIView *tab = self.tabBarController.view;

if ([tab.subviews count] < 2) {

return;

}

UIView *view;

if ([[tab.subviews objectAtIndex:0] isKindOfClass:[UITabBar class]]) {

view = [tab.subviews objectAtIndex:1];

} else {

view = [tab.subviews objectAtIndex:0];

}

if (hidden) {

view.frame = tab.bounds;

} else {

view.frame = CGRectMake(tab.bounds.origin.x, tab.bounds.origin.y, tab.bounds.size.width, tab.bounds.size.height);

}

self.tabBarController.tabBar.hidden = hidden;

}