Animation and ScrollView - ios

Question

I am currently trying to build an image viewer that moves to the next photo every 30 seconds, which also allows to swipe left / right to the next/previous photo manually.
So far I have built two separate apps, one with the swiping functionality and the second with the timer. I have tried many tutorials on the web and am looking for someone to point me in the right direction.
This code switches images every thirty seconds
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
UIImageView *animatedImageView = [[UIImageView alloc]
initWithFrame:CGRectMake(0, 55, 400, 550)];
[self.view addSubview:animatedImageView];
animatedImageView.animationImages = [NSArray arrayWithObjects:
[UIImage imageNamed:#"IMG_0052.JPG"],
[UIImage imageNamed:#"IMG_0054.JPG"],
[UIImage imageNamed:#"IMG_0081.JPG"],
nil];
animatedImageView.animationDuration = 30.0 * [animatedImageView.animationImages count];
[animatedImageView startAnimating];
[self.view addSubview: animatedImageView];
}
This second piece of code has the swiping functionality, I am looking to combine the two
- (void)viewDidLoad
{
[super viewDidLoad];
UIImage *image1 = [UIImage imageNamed:#"workExample.jpg"];
UIImage *image2 = [UIImage imageNamed:#"IMG_0054.JPG"];
UIImage *image3 = [UIImage imageNamed:#"IMG_0052.JPG"];
imageArray = [NSArray arrayWithObjects:image1, image2, image3, nil];
for (int i = 0; i < [imageArray count]; i++) {
//This is to create a imageview for every single pagecontrol
CGRect frame;
frame.origin.x = self.scrollView.frame.size.width * i;
frame.origin.y = 0;
frame.size = self.scrollView.frame.size;
UIImageView *imageView = [[UIImageView alloc] initWithFrame:frame];
imageView.image = [imageArray objectAtIndex:i];
[self.scrollView addSubview:imageView];
}
scrollView.contentSize = CGSizeMake(scrollView.frame.size.width * [imageArray count], scrollView.frame.size.height);
}

Answer 1

I am not using a scrollview and implementing in a different way. I hope it suits your needs
In .h
#interface ViewController : UIViewController
{
NSMutableArray *imagesToAnimate;
UIImageView *animatedImageView;
}
#property (strong, nonatomic) IBOutlet UIView *imageGalleryView;
Im viewDidLoad
animatedImageView = [[UIImageView alloc] initWithFrame:self.imageGalleryView.bounds];
imagesToAnimate = [NSMutableArray arrayWithArray:[NSArray arrayWithObjects:
[UIImage imageNamed:#"IMG_0052.JPG"],
[UIImage imageNamed:#"IMG_0054.JPG"],
[UIImage imageNamed:#"IMG_0081.JPG"],
nil]];
[self.imageGalleryView addSubview:animatedImageView];
//Start a timer
[NSTimer scheduledTimerWithTimeInterval:30.0 target:self selector:#selector(changeImge) userInfo:nil repeats:YES];
animatedImageView.image = imagesToAnimate[0];
UISwipeGestureRecognizer *swipeGesture = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:#selector(gallerySwiped)];
swipeGesture.direction = UISwipeGestureRecognizerDirectionLeft;
[self.imageGalleryView addGestureRecognizer:swipeGesture];
//Give the gallery a border
self.imageGalleryView.layer.borderColor = [UIColor grayColor].CGColor;
self.imageGalleryView.layer.borderWidth = 2.0f;
self.imageGalleryView.layer.cornerRadius = 15.0f;
Now function to update the image as as per scheduled time
-(void)changeImge
{
int index = [imagesToAnimate indexOfObject:animatedImageView.image];
index++;
//this is for the left to right animation ;
CATransition *transition = [CATransition new];
transition.type = kCATransitionPush;
transition.subtype = kCATransitionFromRight;
if (index > imagesToAnimate.count-1) {
animatedImageView.image = imagesToAnimate [0];
}else {
animatedImageView.image = imagesToAnimate[index];
}
[animatedImageView.layer addAnimation:transition forKey:#"transition"];
}
this would handle the swipe
-(void)gallerySwiped
{
[self changeImge];
}
To stop the timer store it in a global variable and call invalidate.I hope this helps.