I'm working on UIButton animation where:
The UIButton is set in the bottom center of the screen and scaled to a small size
_menuBtn.transform = CGAffineTransformMakeScale(0.1f, 0.1f);
When the app starts it should be moving to the bottom left side of the screen as it scales or grow to its original size.
- (void)viewDidLoad
{
[super viewDidLoad];
_menuBtn.frame = CGRectMake(160, 513, 30, 30);
_menuBtn.superview.frame = CGRectMake(160, 513, 30, 30);
_menuBtn.transform = CGAffineTransformMakeScale(0.1f, 0.1f);
NSLog(#"_menuBtn: %# ; _menuBtn.superview: %#", _menuBtn, _menuBtn.superview);
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDelegate:self];
[UIView setAnimationDuration:5];
[UIView setAnimationCurve:UIViewAnimationCurveEaseOut];
CGAffineTransform scaleTrans = CGAffineTransformMakeScale(1.0f, 1.0f);
CGAffineTransform lefttorightTrans = CGAffineTransformMakeTranslation(-200.0f,0.0f);
_menuBtn.transform = CGAffineTransformConcat(scaleTrans, lefttorightTrans);
[UIView commitAnimations];
}
problem
When the animation starts the button starts moving from the bottom right side of the screen and not in the bottom center where it is and should be. Any help ?
Log Result
NSLog(#"%#", _myBtn);
2013-08-14 09:22:38.913 GJCoolNavi[339:c07] <UIButton: 0x813ea30; frame = (0 0; 0 0); opaque = NO; autoresize = TM+BM; layer = <CALayer: 0x813eaf0>>
thats before doing the animation...and the result after the animation is:
2013-08-14 09:30:25.719 GJCoolNavi[612:c07] <UIButton: 0x71206d0; frame = (160 294; 0 0); opaque = NO; autoresize = TM+BM; animations = { transform=<CABasicAnimation: 0x7536a80>; position=<CABasicAnimation: 0x7537dd0>; }; layer = <CALayer: 0x7120790>>
Why don't you do this...
_menuBtn.transform = CGAffineTransformMakeScale(0.1, 0.1);
[UIView animateWithDuration:5.0
options:UIViewAnimationOptionCurveEaseOut
animations:^(){
_menuBtn.transform = CGAffineTransformMakeScale(1.0, 1.0);
_menuBtn.center = self.view.center;
}
completion:nil];
I'd avoid moving stuff using a transform. Change the frame instead.
EDIT
- (void)viewDidLoad
{
[super viewDidLoad];
}
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
// for convenience I'm pulling these values out in to variables.
float buttonWidth = _menuBtn.frame.size.width;
float buttonHeight = _menuBtn.frame.size.height;
float viewWidth = self.view.frame.size.width;
float viewHeight = self.view.frame.size.height;
// set the button frame to be the bottom center
// note you shouldn't have to do this as Interface Builder should already place it there.
// place the button in the horizontal center and 20 points from the bottom of the view.
_menuBtn.frame = CGRectMake((viewWidth - buttonWidth) * 0.5, viewHeight - buttonHeight - 20, buttonWidth, buttonHeight);
// scale the button down before the animation...
_menuBtn.transform = CGAffineTransformMakeScale(0.1, 0.1);
// now animate the view...
[UIView animateWithDuration:5.0
delay:0.0
options:UIViewAnimationOptionCurveEaseOut
animations:^{
_menuBtn.transform = CGAffineTransformIdentity;
_menuBtn.frame = CGRectMake(viewWidth - buttonWidth - 20, viewHeight - buttonHeight - 20, buttonWidth, buttonHeight);
}
completion:nil];
}
Try this and let me know what happens.
This has solved a similar problem.
Apply a (UIButton).imageView Animation.
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDelegate:self];
[UIView setAnimationDuration:5];
[UIView setAnimationCurve:UIViewAnimationCurveEaseOut];
CGAffineTransform scaleTrans = CGAffineTransformMakeScale(1.0f, 1.0f);
CGAffineTransform lefttorightTrans = CGAffineTransformMakeTranslation(-200.0f,0.0f);
_menuBtn.imageView.transform = CGAffineTransformConcat(scaleTrans, lefttorightTrans);
[UIView commitAnimations];
This phenomenon indicates that your button's original frame is wrong, probably because of its auto-resizing. Try setting its frame to the bottom center before you start the animation.
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
_menuBtn.superview.frame = CGRectMake(0, 513, 320, 30); // This is a quick and dirty solution to make sure your button's superview is in the right place. You probably don't want to do this and are more likely to review your view hierarchy.
_menuBtn.frame = CGRectMake(145, 0, 30, 30); // Set the frame to the bottom center, please ensure that _menuBtn's transform hasn't been changed before this step
_menuBtn.transform = CGAffineTransformMakeScale(0.1f, 0.1f);
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDelegate:self];
[UIView setAnimationDuration:5];
[UIView setAnimationCurve:UIViewAnimationCurveEaseOut];
CGAffineTransform scaleTrans = CGAffineTransformMakeScale(1.0f, 1.0f);
CGAffineTransform lefttorightTrans = CGAffineTransformMakeTranslation(-200.0f,0.0f);
_menuBtn.transform = CGAffineTransformConcat(scaleTrans, lefttorightTrans);
[UIView commitAnimations];
}
I have used your code and its moving from bottom center to to bottom left perfectly. Might be your superview isn't in proper rect. Please check.
Related
I have a CGRectMake that used to jump an image to a different position
image.frane=CGRectMake( x,y,w,h);
Then I wanted to translate and scale a Label (on the same ViewController) to another position
CGPoint newCenter = CGPointMake(x,y);
[UIView animateWithDuration: 1.0
delay: 0
options: 0
animations:^{label.center = newCenter ; label.transform = CGAffineTransformScale(CGAffineTransformIdentity, 0.2, 0.2);}
completion:^(BOOL finished) {
label.transform = CGAffineTransformMakeScale(1.0, 1.0);
label.alpha = 0;
}
];
The problem I'm having is when I use the animateWithDuration the image doesn't move but the Label does. If I comment out the animation the image moves again. Am I doing something wrong?
try this bellow code...
[UIView animateWithDuration:1.0f animations:^{
imageView.frame = CGRectMake(newCenter.x, newCenter.y, imageView.frame.size.width, imageView.frame.size.height);
}];
Also you can move UIImageView or anything else with this bellow code... i use this code for scroll the UIScrollView when keyboard appear.. i add the code with your requirement..
UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:1.0f];
imageView.frame = CGRectMake(newCenter.x, newCenter.y, imageView.frame.size.width, imageView.frame.size.height);
[UIView commitAnimations];
i hope this helpful to you...
I'd like to have an image in my iphone app "pop-in" on screen rather than just appearing. By "pop-in" I mean that it would grow from a small dot to its actual size. For reference, this is exactly the same as the "pop" animation effect in Keynote.
I'm completely new to iOS animations, so if someone could point me in the direction on the animation effects I would need to use, it would be greatly appreciated.
Thanks
Brian
UPDATE
I've added this code from the suggestions below. This works but it scales my image down, rather than up. I know that is because I have 0.01 as the transform scale size, but I would like to know how I can start out with an image of size 0.0 and scale up to 1. Is it just a matter to setting the size of my image to 0?
Thanks
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration: 0.2];
image.transform = CGAffineTransformMakeScale(0.01, 0.01);
[UIView setAnimationDelegate:self];
[UIView commitAnimations];
The effect you’re looking for is something like this:
// instantaneously make the image view small (scaled to 1% of its actual size)
view.transform = CGAffineTransformMakeScale(0.01, 0.01);
[UIView animateWithDuration:0.2 delay:0 options:UIViewAnimationOptionCurveEaseOut animations:^{
// animate it to the identity transform (100% scale)
view.transform = CGAffineTransformIdentity;
} completion:^(BOOL finished){
// if you want to do something once the animation finishes, put it here
}];
if you want something like Facebook does on liking any post then use this
-(void)animateButton:(UIButton *)sender{
UIButton * btn = (UIButton *)sender;
[UIView animateWithDuration:0.3/1.5 animations:^{
btn.transform = CGAffineTransformScale(CGAffineTransformIdentity, 1.4, 1.4); // scales up the view of button
} completion:^(BOOL finished) {
[UIView animateWithDuration:0.3/2 animations:^{
btn.transform = CGAffineTransformScale(CGAffineTransformIdentity, 0.7, 0.7);// scales down the view of button
} completion:^(BOOL finished) {
[UIView animateWithDuration:0.3/2 animations:^{
btn.transform = CGAffineTransformIdentity; // at the end sets the original identity of the button
}];
}];
}];}
just call this method when you want to animate the view
if you have text and image on the button and you just want to animate the image of the button then just replace "btn" with "btn.imageView" , this will just produce animation on the image view property of the button.
Hope it helps
All the best.
You have to animate the frame of the view, to shrink it from zero to the final state.
This can be done for example with UIView block animation.
So for example start with your view as an IBOutlet property self.myView with the final size and position, but set the hidden flag.
Then when you want it to appear use the following:
// Save old frame as final stater and set it to zero size for the start of the animation
// But keep the same center position, so it just grows and don't move around
CGRect oldFrame = self.myView.frame;
CGRect oldCenter = self.myView.center;
self.myView.frame = CGRectZero;
self.myView.center = oldCenter;
self.myView.hidden = NO;
NSTimeInterval duration = 0.3;
[UIView animateWithDuration:duration delay:0.0 options:UIViewAnimationOptionAllowUserInteraction animations:^{
// New position and size after the animation should be the same as in Interface Builder
self.myView.frame = oldFrame
}
completion:^(BOOL finished){
// You can do some stuff here after the animation finished
}];
Swift 2.0 version
view.transform = CGAffineTransformMakeScale(0.01, 0.01);
UIView.animateWithDuration(0.2, delay: 0, options: .CurveEaseOut, animations: { () -> Void in
// animate it to the identity transform (100% scale)
self.view.transform = CGAffineTransformIdentity;
}) { (finished) -> Void in
// if you want to do something once the animation finishes, put it here
}
For that you will have to use a simple UIView
Add the UIview to your current view.
- (void) initPopUpView
{
popup.alpha = 0;
popup.frame = CGRectMake (160, 240, 0, 0);
[self.view addSubview:popup];
}
- (void) animatePopUpShow
{
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:0.3];
[UIView setAnimationDelegate:self];
[UIView setAnimationWillStartSelector:#selector(initPopUpView)];
popup.alpha = 1;
popup.frame = CGRectMake (20, 40, 300, 400);
[UIView commitAnimations];
}
I have a UIButton somewhere on my view. On touch event of button I making a UIView appear. The UIAnimation I have used make the view appear from top of window. But I want it to appear from button.frame.origin.y . Before touching the button the view is not visible. On touching the button view should start appearing from above position.
Here is the code :
-(IBAction) ShowInfowView:(id)sender{
CGRect rect = viewInfo.frame;
rect.origin.y = rect.size.height - rect.size.height+58.0;
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:0.70];
[UIView setAnimationDelay:0.0];
[UIView setAnimationCurve:UIViewAnimationCurveEaseOut];
viewInfo.frame = rect;
[UIView commitAnimations];
}
This is how I am hiding the view again :
-(IBAction) HideInfoView:(id)sender{
CGRect rect = viewInfo.frame;
rect.origin.y = -rect.size.height;
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:0.70];
[UIView setAnimationDelay:0.0];
[UIView setAnimationCurve:UIViewAnimationCurveEaseOut];
viewInfo.frame = rect;
[UIView commitAnimations];
}
In viewDidLoad I am doing the following :
CGRect rect = viewInfo.frame;
rect.origin.y = -rect.size.height;
viewInfo.frame = rect;
UPDATE:
Please see this example. Here view is appearing from top of screen. I want it to appear from button y axis. For that matter please consider button y position a bit upwards.
So you want a slide-in effect, but not from the top of the screen, just some arbitrary value?
One way to do it:
1) You should create a view that has the dimensions and position of your desired view AFTER animation finishes, we'll call it baseview.
2) Set this baseview property clipsToBounds to YES. This will make all subviews that are outside of the baseview's frame invisible.
3) Add your animating view as a subview of the baseview, but set the frame so it is invisible (by plcacing it above the baseview):
frame = CGRectMake(0, -AnimViewHeight, AnimViewWidth, AnimViewHeight);
4) Animate the animview frame:
//put this inside of an animation block
AnimView.frame = CGRectMake(0, 0, AnimViewWidth, AnimViewHeight);
EDIT:
Example:
//define the tags so we can easily access the views later
#define BASEVIEW_TAG 100
#define INFOVIEW_TAG 101
- (void) showInfo
{
//replace the following lines with preparing your real info view
UIView * infoView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 100, 100)];
[infoView setBackgroundColor: [UIColor yellowColor]];
[infoView setTag: INFOVIEW_TAG];
//this is the frame of the info view AFTER the animation finishes (again, replace with real values)
CGRect targetframe = CGRectMake(100, 100, 100, 100);
//create an invisible baseview
UIView * baseview = [[UIView alloc] initWithFrame:targetframe];
[baseview setBackgroundColor: [UIColor clearColor]];
[baseview setClipsToBounds: YES]; //so it cuts everything outside of its bounds
[baseview setTag: BASEVIEW_TAG];
//add the nfoview to the baseview, and set it above the bounds frame
[baseview addSubview: infoView];
[infoView setFrame:CGRectMake(0, -infoView.bounds.size.height,
infoView.bounds.size.width, infoView.bounds.size.height)];
//add the baseview to the main view
[self.view addSubview: baseview];
//slide the view in
[UIView animateWithDuration: 1.0 animations:^{
[infoView setFrame: baseview.bounds];
}];
//if not using ARC, release the views
[infoview release];
[baseview release];
}
- (void) hideinfo
{
//get the views
UIView * baseView = [self.view viewWithTag: BASEVIEW_TAG];
UIView * infoView = [baseView viewWithTag: INFOVIEW_TAG];
//target frame for infoview - slide up
CGRect out_frame = CGRectMake(0, -infoView.bounds.size.height,
infoView.bounds.size.width, infoView.bounds.size.height);
//animate slide out
[UIView animateWithDuration:1.0
animations:^{
[infoView setFrame: out_frame];
} completion:^(BOOL finished) {
[baseView removeFromSuperview];
}];
}
I have done exactly what you're trying in my recent project.
The following steps should make this work:
1. In your viewDidLoad: you init your viewToFadeIn like this:
viewToFadeIn = [[UIView alloc] initWithFrame:CGRectMake(20,self.view.frame.size.height+10, self.view.frame.size.widh-40, 200)];
//its important to initalize it outside your view
//your customization of this view
[self.view addSubview:viewToFadeIn];
2.your ShowInfowView: Method should look like this:
` -(IBAction) ShowInfowView:(id)sender{
[UIView beginAnimations:#"fadeIn" context:NULL];
[UIView setAnimationDuration:0.25];
[UIView setAnimationDelegate:self];
[UIView setAnimationDidStopSelector:#selector(animationFinished:finished:context:)];
viewToFadeIn.transform = CGAffineTransformMakeTranslation(0, -290);
//290 is in my case, try a little for your correct value
[UIView commitAnimations];
}
3.yourHideInfoView:` Method looks like this
-(IBAction) HideInfoView:(id)sender{
[UIView beginAnimations:#"fadeOut" context:NULL];
[UIView setAnimationDuration:0.25];
[UIView setAnimationDelegate:self];
viewToFadeIn.transform = CGAffineTransformMakeTranslation(0, 0);
[UIView commitAnimations];
}
EDIT:
4. animationFinishedMethod:
- (void)animationFinished:(NSString *)animationID finished:(BOOL)finished context:(void *)context{
if ([animationID isEqual:#"fadeIn"]) {
//Do stuff
}
if ([animationID isEqual:#"fadeOut"]) {
//Do stuff
}
}
SEE THIS
This should do the trick. Good luck
Your problem is not clear (for me).
What is this?
rect.origin.y = rect.size.height - rect.size.height+58.0;
Is 58 origin of your UIButton?
You should use sender.frame etc
Use blocks to animate like this
[UIView animateWithDuration:0.5f animations:^{
// Animation here
} completion:^(BOOL finished) {
// onComplete
}];
- (void) slideIn{
//This assumes the view and the button are in the same superview, if they're not, you'll need to convert the rects
//I'm calling the animated view: view, and the button: button...easy enough
view.clipToBounds = YES;
CGRect buttonRect = button.frame;
CGRect viewRect = CGRectMake(buttonRect.origin.x, buttonRect.origin.y + buttonRect.size.height, view.bounds.size.width, 0);
CGFloat intendedViewHeight = view.height;
view.frame = viewRect;
viewRect.size.height = intendedViewHeight;
[UIView animateWithDuration:.75 delay:0.0f options:UIViewAnimationOptionCurveEaseOut animations:^{
view.frame = viewRect;
}completion:nil];
}
This will cause the the view to appear to slide out from under the button. To slide the view back in, you just reverse the animations. If you wish to slide it up from the button, you'll need to make sure your starting 'y' is the 'y' value of the button (rather than the 'y' + 'height') and animate both the height and y values of the view that needs animating.
How do I animate and resize a UIImageView? I tried doing this and it didn't work out for me:
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:1.0];
imgView.frame = CGRectMake(0, 0, 320, 480);
[UIView commitAnimations];
Try using a block animation:
[UIView animateWithDuration:1.0f // This can be changed.
animations:^{
CGRect frame = imageView.frame;
frame.size.width += 100.0f; // This is just for the width, but you can change the origin and the height as well.
imageView.frame = frame;
}
completion:^(BOOL finished){
}];
Hope that Helps!
Try this code. This works fine for me,
CGPoint newLogoutCenter = CGPointMake(160, 364);
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:1.0f];
twitterBarVIew.center = newLogoutCenter;
[UIView commitAnimations];
If we assume that you have correct reference to the imgView, then it seems that starting frame of the imgView is the same before and after animation.
Try to set imgView.frame to:
imgView.frame = CGRectMake(100,100,100,100);
//Set up the UIImageView. the Frame determines the position and size of the image.
UIImageView *i = [[UIImageView alloc] initWithFrame:[CGRectMake(50.0,50.0,50.0,50.0)]];
//Add images to UIImageView
i.images = [[NSArray alloc] initWithObjects:[UIImage imageNamed:#"1.png"],
[UIImage imageNamed:#"2.png"], nil];
//Set the amount of time for the animation to run
i.animationDuration = 1.0f;
//start the animations
[i startAnimating];
You can resize the image by changing the frame of the image
i.frame = CGRectMake(x, y, width, height);
I have an image "image1" which is a UIButton and what I want is that if I touch this button, the width of the image is multiplied by two (with animation)not the height just the width.
sorry for my english I'm french :/
This is fairly easy with block animation. Simply try:
imageView.contentMode = UIViewContentModeScaleAspectFit;
[UIView animateWithDuration:1.0
animations:^{
CGRect newRect = imageView.frame;
int movementToTheLeft = imageView.frame.size.width / 2;
newRect.size.width *= 2;
newRect.origin.x -= movementToTheLeft;
imageView.frame = newRect;
}
completion:^(BOOL finished){
[UIView animateWithDuration:1.0
animations:^{
NSLog(#"Scaled!");// Anything can go in this completion block, it should be used for any logic you need after the animation.
}
completion:^(BOOL finished){
;
}];
This should scale your imageView's width by 2. Hope that helps!
The old fashioned way (not recommended after iOS 4.0, but still works):
[UIView beginAnimations:#"widen" context:nil];
[UIView setAnimationDuration:1.0];
CGRect newRect = imageView.frame;
newRect.width *= 2;
imageView.frame = newRect;
// ... set more parameters if desired
[UIView commitAnimations];