iOS 3 types of crossfade animations

gistfile1.m

    [UIView animateWithDuration:0.3 animations:^() {
        self.commentContentLabel.alpha = (editing)? 0.0 : 1.0;
    }];
    
////////////////

    [UIView beginAnimations:nil context:nil];
    [UIView setAnimationDuration:1.0];
    [UIView setAnimationTransition:UIViewAnimationTransitionFlipFromRight forView:self.commentContentLabel cache:YES];
    
    self.commentContentLabel.hidden = editing;   
    
    [UIView commitAnimations];

    
    ///////////////////
    
    
    UIViewAnimationOptions options = UIViewAnimationOptionBeginFromCurrentState | UIViewAnimationOptionTransitionCrossDissolve;  
    
    [UIView transitionWithView:self.bottomScrollView 
                      duration:0.3
                       options:options  
                    animations:^{
                        self.commentContentLabel.hidden = editing;
                        self.commentContentTextView.hidden = !editing;
                    
                    }  
                    completion:NULL];  



//////// CORE ANIMATION
#import <QuartzCore/QuartzCore.h>


    CATransition *transition = [CATransition animation];
    transition.duration = 0.8;
    transition.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
    transition.type = kCATransitionPush;
    transition.subtype = kCATransitionFromLeft;
    transition.delegate = self;        
    
    [[[[[self view] subviews] objectAtIndex:0] layer] addAnimation:transition forKey:nil];
    [currentVC viewWillAppear:YES];
    [destinationVC viewWillDisappear:YES];
    [destinationVC viewDidDisappear:YES];
    [currentVC viewDidAppear:YES];