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];
Related
I have the following code to play animation with images:
-(void)playPopAnimation:(void (^)(void))completion{
__block NSMutableArray *images;
float animationDuration = 1.0f;
images = [[NSMutableArray alloc] initWithCapacity:26];
for(int i=1; i<26; i++){
NSString *fileName = [[NSBundle mainBundle] pathForResource:[NSString stringWithFormat:#"bulut_pop%d",i] ofType:#"png"];
UIImage *image = [UIImage imageWithContentsOfFile:fileName];
//UIImage* image = [UIImage imageNamed:[NSString stringWithFormat:#"bulut_pop%d.png",i]];
[images addObject:image];
}
[Helper playSound:#"button_pop"];
UIImageView* imageView = [[UIImageView alloc] initWithFrame:self.itemImage.frame];
imageView.animationImages = images;
imageView.animationDuration = animationDuration;
imageView.animationRepeatCount = 1; // 0 = nonStop repeat
[self addSubview:imageView];
[imageView startAnimating];
self.imageButton.userInteractionEnabled = NO;
[[UIApplication sharedApplication] beginIgnoringInteractionEvents];
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, animationDuration * NSEC_PER_SEC), dispatch_get_current_queue(), ^{
//[self.delegate myItemCell:self cellDidTappedFor:[self item]];
self.imageButton.userInteractionEnabled = YES;
images = nil;
});
Each time I call this function, memory increases by 10 MB. What is the good way to play animated image views?
Each time you call this method, you add a new image view (with its array of images) to your view. You should refactor your code so that the creation of the array and imageView are inside an if clause testing whether imageView is nil, so that part only runs the first time the method is called (and make imageView a property).
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];
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.
Hey guys,
So.... lets say I have an NSArray of images
NSMutableArray *images = [NSMutableArray new];
[images addObject:[UIImage imageNamed:#"line1.png"]];
[images addObject:[UIImage imageNamed:#"line2.png"]];
[images addObject:[UIImage imageNamed:#"line3.png"]];
[images addObject:[UIImage imageNamed:#"line4.png"]];
Now I would like to load all these at once using a for loop but here is the catch.... I need to be able to set the images as hidden until the user unhides through interaction.
for (UIImage *image in images) {
UIImageView *line = [[UIImageView alloc] initWithImage:image];
line.hidden = YES;
[self.view addSubview:line];
}
But then how to I set the hidden BOOL to NO using another method?
As a secondary question, how would one release *line in the code above?
Thanks,
Darren
One option is to set up your images like:
int nextTag = 1;
for (UIImage *image in images) {
UIImageView *line = [[UIImageView alloc] initWithImage:image];
line.hidden = YES;
line.tag = nextTag;
[self.view addSubview:line];
[line release];
nextTag++;
}
...and then to unhide them you can do:
UIView* imageView = [self.view viewWithTag: lineNumber];
imageView.hidden = NO;
...assuming that your user-interaction handler is able to determine what line in the UI the user is interacting with.
As a secondary question, how would one release *line in the code above?
for (UIImage *image in images) {
UIImageView *line = [[UIImageView alloc] initWithImage:image];
line.hidden = YES;
[self.view addSubview:line]; // this retains the subview.
[line release]; // release line like this.
}
**
-(IBAction)btnReviewStar:(id)sender{
for (int i =([sender tag] ==30); i<36; i++) {
btnReviewStar.selected = NO;
btnReviewStar1.selected = NO;
btnReviewStar2.selected = NO;
btnReviewStar3.selected = NO;
btnReviewStar4.selected = NO;
if([sender tag] == 31) {
btnReviewStar.selected = YES;
break;
} else if([sender tag]==32) {
btnReviewStar.selected = YES;
btnReviewStar1.selected = YES;
break;
} else if([sender tag]==33) {
btnReviewStar.selected = YES;
btnReviewStar1.selected = YES;
btnReviewStar2.selected = YES;
break;
} else if([sender tag]==34) {
btnReviewStar.selected = YES;
btnReviewStar1.selected = YES;
btnReviewStar2.selected = YES;
btnReviewStar3.selected = YES;
break;
} else {
btnReviewStar.selected = YES;
btnReviewStar1.selected = YES;
btnReviewStar2.selected = YES;
btnReviewStar3.selected = YES;
btnReviewStar4.selected = YES;
break;
}
}
}
**