第三天

代码摘录一:
- (void)viewDidLoad {
	
	MainViewController *viewController = [[MainViewController alloc] initWithNibName:@"MainView" bundle:nil];
	self.mainViewController = viewController;
	[viewController release];
	
	[self.view insertSubview: mainViewController.view belowSubview: infoButton];
}

- (void)loadFlipsideViewController 
{
	
	FlipsideViewController *viewController = [[FlipsideViewController alloc] initWithNibName:@"FlipsideView" bundle:nil];
	self.flipsideViewController = viewController;
	[viewController release];
	
	// Set up the navigation bar
	UINavigationBar *aNavigationBar = [[UINavigationBar alloc] initWithFrame:CGRectMake(0.0, 0.0, 320.0, 44.0)];
	aNavigationBar.barStyle = UIBarStyleBlackOpaque;
	self.flipsideNavigationBar = aNavigationBar;
	[aNavigationBar release];
	
	UIBarButtonItem *buttonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(toggleView)];
	UINavigationItem *navigationItem = [[UINavigationItem alloc] initWithTitle:@"openURL"];
	navigationItem.rightBarButtonItem = buttonItem;
    
    //显示Item.
	[flipsideNavigationBar pushNavigationItem: navigationItem animated:NO];
	[navigationItem release];
	[buttonItem release];
    
}

- (IBAction)toggleView {	
	/*
	 This method is called when the info or Done button is pressed.
	 It flips the displayed view from the main view to the flipside view and vice-versa.
	 */
	if (flipsideViewController == nil)
    {
		[self loadFlipsideViewController];
	}
	
	UIView *mainView = mainViewController.view;
	UIView *flipsideView = flipsideViewController.view;
	
	[UIView beginAnimations:nil context:NULL];
	[UIView setAnimationDuration:1];
	[UIView setAnimationTransition:([mainView superview] ? UIViewAnimationTransitionFlipFromRight : UIViewAnimationTransitionFlipFromLeft) forView:self.view cache:YES];
	
	if ([mainView superview] != nil) {
		[flipsideViewController viewWillAppear:YES];
		[mainViewController viewWillDisappear:YES];
		[mainView removeFromSuperview];
        [infoButton removeFromSuperview];
		[self.view addSubview:flipsideView];
		[self.view insertSubview:flipsideNavigationBar aboveSubview:flipsideView];
		[mainViewController viewDidDisappear:YES];
		[flipsideViewController viewDidAppear:YES];
	} else {
		[mainViewController viewWillAppear:YES];
		[flipsideViewController viewWillDisappear:YES];
		[flipsideView removeFromSuperview];
		[flipsideNavigationBar removeFromSuperview];
		[self.view addSubview:mainView];
		[self.view insertSubview:infoButton aboveSubview:mainViewController.view];
		[flipsideViewController viewDidDisappear:YES];
		[mainViewController viewDidAppear:YES];
	}
	[UIView commitAnimations];
}

设置背影颜色:
	self.view.backgroundColor = [UIColor viewFlipsideBackgroundColor];	

// Call Google 411
	[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"tel://8004664411"]];