I have a UIImageView on my storyboard, which is linked to an outlet in the code. When I run the code, it only shows the static picture that the storyboard shows, not the animation that I create programmatically. Any ideas?
for(int i=0; i<4; i++) {
UIImage *image = [UIImage imageNamed:[NSString stringWithFormat:#"loading%d",i]];
[self.images addObject:image];
}
self.loadingView.animationImages = self.images;
self.loadingView.animationDuration = 2;
self.loadingView.animationRepeatCount = 1;
[self.loadingView startAnimating];
Note: loadingView is the UIImageView, images is an NSMutableArray.
If you want to make run time array you can use like this way.
NSMutableArray *images = [[NSMutableArray alloc] init];
for (int i = 1 ; i < 4; i++) {
[images addObject:[UIImage imageNamed:[NSString stringWithFormat: #"loading%d.jpg", i]]];
}
self.loadingView.animationImages = images;
self.loadingView.animationDuration = 2;
self.loadingView.animationRepeatCount = 1;
[self.loadingView startAnimating];
Hope this will help you. It's working fine for me.
I recommend you to use array directly like this.
NSArray *images = [[NSArray alloc] initWithObjects:
[UIImage imageNamed:#"1.jpg"],
[UIImage imageNamed:#"2.jpg"],
nil];
self.loadingView.animationImages = images;
self.loadingView.animationDuration = 2;
self.loadingView.animationRepeatCount = 1;
[self.loadingView startAnimating];
Related
I am trying to so a simple UIImageView animation. I have 11 images of .png type. The animation is just a rabbit blinking. I am having issues with the array:
UIImageView *animationView = [[UIImageView alloc] initWithFrame:CGRectMake(self.view.bounds.size.width/2-123/2, self.view.bounds.size.height/2-278/2, 123, 278)];
NSArray *imageNames = [NSArray arrayWithObjects:#"rabbit-1.png",#"rabbit-2.png",#"rabbit-3.png",#"rabbit-4.png",#"rabbit-5.png",#"rabbit-6.png",#"rabbit-7.png",#"rabbit-8.png",#"rabbit-9.png",#"rabbit-10.png",#"rabbit-11.png", nil];
NSMutableArray *images = [[NSMutableArray alloc] init];
for(int x =0; x==[imageNames count]; x++){
UIImage *image = [UIImage imageNamed: [imageNames objectAtIndex:x]];
[images addObject:image];
}
NSLog(#"image name array length is : %d",[images count]);
animationView.animationImages=images;
animationView.animationDuration=10;
[self.view addSubview:animationView];
[animationView startAnimating];
Nothing is appearing on the screen because the images array is empty. Not sure why this is. I did init and alloc in it but when I check the length it comes back as zero. Any ideas what is going on here? Any pointers would be appreciated. Thanks
x == [imageNames count] is always false, so the for loop won't get executed.
Change the line
for(int x =0; x==[imageNames count]; x++)
to
for(int x = 0; x < [imageNames count]; x++)
Is there a better way to iterate the following images?
NSArray *imageNames = #[#"MyImage-0.png", #"MyImage-1.png", #"MyImage-2.png",#"MyImage-3.png",#"MyImage-4.png", #"MyImage-5.png", #"MyImage-6.png", #"MyImage-7.png"];
NSMutableArray *images = [[NSMutableArray alloc] init];
for (int i = 0; i < imageNames.count; i++) {
[images addObject:[UIImage imageNamed:[imageNames objectAtIndex:i]]];
}
mImageView.animationImages = images;
mImageView.animationDuration = 1.5;
[self.view mImageView];
[mImageView startAnimating];
NSInteger imagesCount = 7;
NSMutableArray *images = [[NSMutableArray alloc] init];
for (int i = 0; i <= imagesCount; i++) {
[images addObject:[UIImage imageNamed:[NSString stringWithFormat:#"MyImage-%d", i]]];
}
mImageView.animationImages = images;
mImageView.animationDuration = 1.5;
[self.view mImageView];
[mImageView startAnimating];
You can use enumeration
for(NSString *imageStr in imageNames)
{
[images addObject:[UIImage imageNamed:imageStr]];
}
This takes less time to iterate.
Hope it helps you...!
The better way will be not using for loop. Try this code
+(NSArray*)getSortedArray:(NSMutableArray*)arrayToSort
{
return [arrayToSort sortedArrayUsingSelector:#selector(compare:)];
}
Hope this class method will help you.
You might want to use some handy library, like this one. Look, it even supports GIF!
NSString *urlString = #"http://raphaelschaad.com/static/nyan.gif";
NSData *data = [NSData dataWithContentsOfURL:[NSURL URLWithString:urlString]];
FLAnimatedImage *image = [FLAnimatedImage animatedImageWithGIFData:data];
FLAnimatedImageView *imageView = [[FLAnimatedImageView alloc] init];
imageView.animatedImage = image;
imageView.frame = CGRectMake(0.0, 0.0, 100.0, 100.0);
[self.view addSubview:imageView];
I've downloaded animated bonfire from the internet. My image sequence is "*.png" and I can't get it work. It keeps looping to the end. It does not show image. How come I can't animate this code? What did I do wrong?
UIImageView* campFireView = [[UIImageView alloc] initWithFrame:screenx.frame];
int j;
int i;
for (j = 1, i = 0; i < 28; i =1)
{
NSLog( #"%i.png", i);
campFireView.animationImages = [NSArray arrayWithObjects:
[UIImage imageNamed:[NSString stringWithFormat:#"%i.png",i]], nil];
}
// all frames will execute in 1.75 seconds
campFireView.animationDuration = .15;
// repeat the annimation forever
campFireView.animationRepeatCount = 1;
// start animatinganimationRepeatCount:1];
[campFireView startAnimating];
// add the animation view to the main window
[self.view addSubview:campFireView];
[campFireView release];
Every time you call:
campFireView.animationImages = [NSArray arrayWithObjects:
[UIImage imageNamed:[NSString stringWithFormat:#"%i.png",i]], nil];
You are setting the animationImages to a one-item array. What you probably meant to do instead:
NSMutableArray *animationImages = [NSMutableArray array];
for (i = 0; i < 28; i++)
{
[animationImages addObject:[UIImage imageNamed:[NSString stringWithFormat:#"%i.png",i]]];
}
campfireView.animationImages = animationImages;
Also - I don't know what was going on with your for loop but I fixed it.
When u r looping then providing one image every time to animationImages
NSMutableArray *arrImgs = [NSMutableArray array];
for (i = 0; i < 28; i++)
{
[arrImgs addObject:[UIImage imageNamed:[NSString stringWithFormat:#"%i.png",i]]];
}
campfireView.animationImages = [NSArray arrayWithArray:arrImgs];
This is what I currently have:
NSMutableArray *images = [[NSMutableArray alloc] initWithCapacity:21];
for(int count = 1; count <= 21; count++)
{
NSString *fileName = [NSString stringWithFormat:#"dance2_%03d.jpg", count];
UIImage *frame = [UIImage imageNamed:fileName];
[images addObject:frame];
}
UIImage imageNamed is causing me some memory issues and I would like to switch to imageWithContentsOfFile.
I can make it work with a single image, but not the whole array:
NSMutableArray *images = [[NSMutableArray alloc] initWithCapacity:21];
for(int count = 1; count <= 21; count++)
{
NSString *fileName = [[[NSBundle mainBundle] bundlePath] stringByAppendingString:#"/dance2_001.jpg"];
UIImage *frame = [UIImage imageWithContentsOfFile:fileName];
[images addObject:frame];
}
Any help is greatly appreciated! Thanks!
for(int i = 1; i <= 21; i++)
{
[images addObject:[UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:[NSString stringWithFormat:#"dance2_%03d", i] ofType:#"jpg"]]];
}
what you should do first is create an array with the images for your animation like something like this:
NSMutableArray* images = [[NSMutableArray alloc] initWithObjects:
[UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:#"image1" ofType:#"jpg"]],
[UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:#"image2" ofType:#"jpg"]],
nil];
then you can add it to an UIImageView to animate it like this:
UIImageView* animationImagesView = [[UIImageView alloc] initWithFrame:CGRectMake(posX, posY, frameWidth, frameHeight)];
animationImagesView.animationImages = images; //array of images to be animate
animationImagesView.animationDuration = 1.0; //duration of animation
animationImagesView.animationRepeatCount = 1; //number of time to repeat animation
[self.view addSubview:animationImagesView];
now you can start and stop the animation using these two calls:
[animationImagesView startAnimating]; //starts animation
[animationImagesView stopAnimating]; //stops animation
hope this helps. also remember to release and nil your Array and UIImageView when done.
I'm trying to free up my apps memory and want to completely remove loadingImageView from memory when I tap a button. How do I do this?
-(IBAction)animationOneStart {
NSMutableArray *images = [[NSMutableArray alloc] initWithCapacity:88];
for(int count = 1; count <= 88; count++)
{
NSString *fileName = [NSString stringWithFormat:#"testPic1_%03d.jpg", count];
UIImage *frame = [UIImage imageNamed:fileName];
[images addObject:frame];
}
loadingImageView.animationImages = images;
loadingImageView.animationDuration = 5;
loadingImageView.animationRepeatCount = 1; //Repeats indefinitely
[loadingImageView startAnimating];
[images release];
}
-(IBAction)removeFromMemory {
//What do I add here?
}
Thanks!
Ok. If you want to remove UIImageView animation try this:
-(IBAction)removeFromMemory {
[loadingImageView stopAnimating]; //here animation stops
[loadingImageView removeFromSuperview]; // here view removes from view hierarchy
[loadingImageView release]; loadingImageView = nil; //clean memory
}
For remove CoreAnimation from UIView instance use method:
[view.layer removeAllAnimations];