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];
}