programming4us
programming4us
MOBILE

iPhone Developer : Assembling Views and Animations - Recipe: Swapping Views

- Free product key for windows 10
- Free Product Key for Microsoft office 365
- Malwarebytes Premium 3.7.1 Serial Keys (LifeTime) 2019

The UIView animation block doesn’t limit you to a single change. Recipe 1 combines size transformations with transparency changes to create a more compelling animation. It does this by adding several directives at once to the animation block. This recipe performs five actions at a time. It zooms and fades one view into place while zooming out and fading away another and then exchanges the two in the subview array list.

Notice how the viewDidLoad method prepares the back object for animation by shrinking it and making it transparent. When the swap: method first executes, that view will be ready to appear and zoom to size.

This recipe does wait for the animation to finish by providing a delegate and a simplified callback that ignores the parameters of the default callback invocation (animationDidStop:finished:context:). This code hides the bar button after it is pressed and does not return it to view until the animation completes.

Recipe 1. Combining Multiple View Changes in Animation Blocks
- (void) animationFinished: (id) sender
{
self.navigationItem.rightBarButtonItem =
BARBUTTON(@"Swap",@selector(swap:));
}

- (void) swap: (id) sender
{
self.navigationItem.rightBarButtonItem = nil;

UIView *frontObject = [[self.view subviews] objectAtIndex:2];
UIView *backObject = [[self.view subviews] objectAtIndex:1];

CGContextRef context = UIGraphicsGetCurrentContext();
[UIView beginAnimations:nil context:context];
[UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
[UIView setAnimationDuration:1.0];

frontObject.alpha = 0.0f;
backObject.alpha = 1.0f;
frontObject.transform = CGAffineTransformMakeScale(0.25f, 0.25f);
backObject.transform = CGAffineTransformIdentity;
[self.view exchangeSubviewAtIndex:1 withSubviewAtIndex:2];
[UIView setAnimationDelegate:self];
Other  
 
Top 10
Free Mobile And Desktop Apps For Accessing Restricted Websites
MASERATI QUATTROPORTE; DIESEL : Lure of Italian limos
TOYOTA CAMRY 2; 2.5 : Camry now more comely
KIA SORENTO 2.2CRDi : Fuel-sipping slugger
How To Setup, Password Protect & Encrypt Wireless Internet Connection
Emulate And Run iPad Apps On Windows, Mac OS X & Linux With iPadian
Backup & Restore Game Progress From Any Game With SaveGameProgress
Generate A Facebook Timeline Cover Using A Free App
New App for Women ‘Remix’ Offers Fashion Advice & Style Tips
SG50 Ferrari F12berlinetta : Prancing Horse for Lion City's 50th
- Messages forwarded by Outlook rule go nowhere
- Create and Deploy Windows 7 Image
- How do I check to see if my exchange 2003 is an open relay? (not using a open relay tester tool online, but on the console)
- Creating and using an unencrypted cookie in ASP.NET
- Directories
- Poor Performance on Sharepoint 2010 Server
- SBS 2008 ~ The e-mail alias already exists...
- Public to Private IP - DNS Changes
- Send Email from Winform application
- How to create a .mdb file from ms sql server database.......
programming4us programming4us
programming4us
 
 
programming4us