sequencing image using core animation, Recieving memory warnings - ios

Question

I am recieving memory warning using 100 of animating images so I tried to use Core Animation instead but that gives me the same problem. This is because I don't know how to use replaceSublayer in my current code
UIView* upwardView=[[UIView alloc]init];
[upwardView setFrame:CGRectMake(0, 0, 1024, 768)];
[self.view addSubview:upwardView];
NSArray *animationImages=[NSArray arrayWithObjects:[UIImage imageNamed:#"001.png"],[UIImage imageNamed:#"001.png"],[UIImage imageNamed:#"002.png"],[UIImage imageNamed:#"003.png"],....,nil];
CAKeyframeAnimation *animationSequence = [CAKeyframeAnimation animationWithKeyPath: #"contents"];
animationSequence.calculationMode = kCAAnimationLinear;
animationSequence.autoreverses = YES;
animationSequence.duration = 5.00;
animationSequence.repeatCount = HUGE_VALF;
NSMutableArray *animationSequenceArray = [[NSMutableArray alloc] init];
for (UIImage *image in animationImages)
{
[animationSequenceArray addObject:(id)image.CGImage];
}
CALayer *layer = [upwardView layer];
animationSequence.values = animationSequenceArray;
[layer addAnimation:animationSequence forKey:#"contents"];

Answer 1

I guess you need to add a few lines more. Just replace the last three lines and add the following line.
//Prepare CALayer
CALayer *layer = [CALayer layer];
layer.frame = self.view.frame;
layer.masksToBounds = YES;
[layer addAnimation:animationSequence forKey:#"contents"];
[upwardView.layer addSublayer:layer]; // Add CALayer to your desired view
For detail implementation check this reference