Iphone隐藏和显示TabBar的方法

1.隐藏TabBar：

- (void)hideTabBar { if (self.tabBarController.tabBar.hidden == YES) { return; } UIView *contentView; if ( [[self.tabBarController.view.subviews objectAtIndex:0] isKindOfClass:[UITabBar class]] ) contentView = [self.tabBarController.view.subviews objectAtIndex:1]; else contentView = [self.tabBarController.view.subviews objectAtIndex:0]; contentView.frame = CGRectMake(contentView.bounds.origin.x, contentView.bounds.origin.y, contentView.bounds.size.width, contentView.bounds.size.height + self.tabBarController.tabBar.frame.size.height); self.tabBarController.tabBar.hidden = YES; }
2.显示TabBar：

- (void)showTabBar { if (self.tabBarController.tabBar.hidden == NO) { return; } UIView *contentView; if ([[self.tabBarController.view.subviews objectAtIndex:0] isKindOfClass:[UITabBar class]]) contentView = [self.tabBarController.view.subviews objectAtIndex:1]; else contentView = [self.tabBarController.view.subviews objectAtIndex:0]; contentView.frame = CGRectMake(contentView.bounds.origin.x, contentView.bounds.origin.y, contentView.bounds.size.width, contentView.bounds.size.height - self.tabBarController.tabBar.frame.size.height); self.tabBarController.tabBar.hidden = NO; }
3.如果定义了上面两个方法，在viewDidAppear:方法里面就可以调用了

-(void)viewDidAppear:(BOOL)animated{ //[self hideTabBar]; [self showTabBar]; }