How to apply animation during switching images - ios

Question

I have an imageView in top of my screen, and what i want is - to switch images with specific time interval, and to make it with animation (I'm not specify what really animation should be, that could be fade for example). I have suggested to add that code snippet:
// load all the frames of our animation
self.imageSlideshow.animationImages = [NSArray arrayWithObjects:
self.firstImageIps, self.secondImageIps, self.thirdImageIps, self.fourthImageIps, self.fifthImageIps, nil];
// all frames will execute in 1.75 seconds
self.imageSlideshow.animationDuration = 1.75;
// repeat the animation forever
self.imageSlideshow.animationRepeatCount = 0;
// start animating
NSLog(#"that one called?");
[self.imageSlideshow startAnimating];
But images here only switching, without any animation.
And here is more serious issues - if i set duration to more, then 3 seconds, it start act weird (not of all images show, first image show more often then second and third. It look like it can't achieve a full cycle and move to first image after some short time again and again).
How to achieve switching images with animation, with timer interval, for example 5-7 seconds?
Any advice would be appreciated, thanks!

Answer 1

Try this one:
- (void)viewDidLoad {
[super viewDidLoad];
self.imgArr = [[NSArray alloc] initWithObjects:#"DSC06715.JPG",#"Snapshot_20121113_18.JPG",#"IMAG1689.jpg",#"IMAG1720.jpg",#"IMAG1396.jpg", nil];
[NSTimer scheduledTimerWithTimeInterval:2.5 target:self selector:#selector(performTransition) userInfo:nil repeats:YES];
}
-(void)performTransition
{
int randImg = arc4random()%self.imgArr.count;
[self.imageView1 setImage:[UIImage imageNamed:[self.imgArr objectAtIndex:randImg]]];
CATransition *transition = [CATransition animation];
transition.duration = 1;
transition.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
NSString *types[4] = {kCATransitionFade};
transition.type = types[1];
transition.delegate = self;
[self.imageView1.layer addAnimation:transition forKey:nil];
}

Answer 2

-(void)animateImages
{
count++;
[UIView transitionWithView:imageSlideshow
duration:2.0f
options:UIViewAnimationOptionTransitionCrossDissolve
animations:^{
imageSlideshow.image = [imagesArray objectAtIndex: count % [imagesArray count]];
} completion:^(BOOL finished) {
[self animateImages];
}];
}
This code snippet will help you to add any type of animation.

Answer 3

One of the simplest ways to do animation.
Code example :
[UIView animateWithDuration:0.3 animations:^{
//change alpha with animation.
self.friendsTableView.alpha = 1.f;
} completion:^(BOOL finished) {
}];
This animation could be set with delay and optionsas well. As far as i know it is the simplest way to set proper animation with less afford.

Answer 4

To make animation between 2 view you may use spacial UIView method:
- (void)makeCrossDissolveAnimation {
NSArray *images = self.imageSlideshow.animationImages;
static int counter = 0;
UIImageView *startView = [[UIImageView alloc] initWithImage:images[counter]];
counter = (counter+1) % [images count];
UIImageView *endView = [[UIImageView alloc] initWithImage:images[counter]];
[UIView transitionFromView:startView toView:endView duration:ELAnimationDuration
options:UIViewAnimationOptionTransitionCrossDissolve
completion:^(BOOL finished) {
// Your completion block
}];
}