I am trying to add a bounce effect to the animation below. Here is my code:
[UIView animateWithDuration:1.0
delay:.0
usingSpringWithDamping:0.5
initialSpringVelocity:2.0
options:UIViewAnimationOptionCurveEaseOut
animations:^{
// Coming from a value of CGAffineTransformMakeScale(0.001, 1.0)
self.myView.transform = CGAffineTransformMakeScale(1.0, 1.0);
}completion:nil
];
It's not working correctly. It becomes wider at the end of the animation then it goes back to normal. I want the width to bounce to a lesser value than 1.0, not more than 1.0.
ust for future code reuse and keeping code clean
popUp.transform = CGAffineTransformScale(CGAffineTransformIdentity, 0.001, 0.001);
[self.view addSubview:popUp];
[UIView animateWithDuration:0.3/1.5 animations:^{
popUp.transform = CGAffineTransformScale(CGAffineTransformIdentity, 1.1, 1.1);
} completion:^(BOOL finished) {
[UIView animateWithDuration:0.3/2 animations:^{
popUp.transform = CGAffineTransformScale(CGAffineTransformIdentity, 0.9, 0.9);
} completion:^(BOOL finished) {
[UIView animateWithDuration:0.3/2 animations:^{
popUp.transform = CGAffineTransformIdentity;
}];
}];
}];
A Detailed explanation of UIView bounce animation is given in this post,both by UIDynamicAnimator and spring Animation
How to create a UIView bounce animation?
Related
In objective-c, I want to add fade in and fade out animation to a UIView. I want to do the fade-out and fade-in animation continuously. To illustrate it, what effect I want to have is as following:
fade out - fade in - fade out - fade in - ...
What I'm trying is as following:
-(void)fadeOutIn:(UIView *)view duration:(NSTimeInterval)duration
{
static CGFloat alpha = 1.0;
[UIView animateWithDuration:duration
delay:0.0
options: UIViewAnimationOptionRepeat| UIViewAnimationOptionCurveEaseInOut
animations:^{
alpha = abs((int)(alpha - 1.0));
view.alpha = alpha;
}
completion:^(BOOL finished){
}];
}
I also tried following:
-(void)fadeOutIn:(UIView *)view duration:(NSTimeInterval)duration
{
[UIView animateWithDuration:duration
delay:0.0
options: UIViewAnimationOptionRepeat| UIViewAnimationOptionCurveEaseInOut
animations:^{
view.alpha = 0.0;
}
completion:^(BOOL finished){
[UIView animateWithDuration:duration
delay:0.0
options: UIViewAnimationOptionRepeat|UIViewAnimationOptionCurveEaseInOut
animations:^{
view.alpha = 1.0;
}
completion:^(BOOL finished){
}];
}];
}
But the issue is they worked all the same, i.e., the UIView will fade out properly and SUDDENLY show up(not fade in), then fade out again...
Seems the fade in animation not work at all. Does anybody know what's wrong of my code please? Any suggestion will be highly appreciated.
Try this
[UIView animateKeyframesWithDuration:1 delay:0 options:UIViewAnimationOptionRepeat|UIViewAnimationOptionAutoreverse|UIViewAnimationCurveEaseInOut animations:^{
self.customIV.alpha = 0;
} completion:^(BOOL finished) {
}];
Here's this, Vigor, this does work, but I had to modify the code, this is somewhat dangerous code, due to it's constant recursiion, but you'll get the point:
-(void)fadeOutIn
{
[UIView animateWithDuration:1
delay:0.0
options: UIViewAnimationOptionCurveEaseInOut
animations:^{
[[self contentView] emailField].alpha = 0.0;
}
completion:^(BOOL finished){
[UIView animateWithDuration:1
delay:0.0
options: UIViewAnimationOptionCurveEaseInOut
animations:^{
[[self contentView] emailField].alpha = 1.0;
}
completion:^(BOOL finished){
[self fadeOutIn];
}];
}];
}
I would really rethink how this works, I used it on a button in my view and it will recurse constanly, until the view is removed from the superview. I had to hardcode the button in the code.
[UIView animateWithDuration:duration
delay:0.0
options: UIViewAnimationOptionRepeat| UIViewAnimationOptionAutoreverse|UIViewAnimationOptionCurveEaseInOut
animations:^{
view.alpha = 0.0;
}
completion:nil];
Just call this once
Try this....
YourView.alpha = 1;// set the initial value of alpha
[UIView animateWithDuration:1 delay:0
options: UIViewAnimationOptionAutoreverse | UIViewAnimationOptionRepeat
animations:^{
YourView.alpha = 0; // set the max value of alpha
} completion:nil];
This solution is for Swift 3,4 and 5
UIView.animateKeyframes(withDuration: 1, delay: 0, options: [UIView.KeyframeAnimationOptions(rawValue: UIView.AnimationOptions.repeat.rawValue), UIView.KeyframeAnimationOptions(rawValue: UIView.KeyframeAnimationOptions.RawValue(UIView.AnimationCurve.easeInOut.rawValue)), UIView.KeyframeAnimationOptions(rawValue: UIView.AnimationOptions.autoreverse.rawValue)] , animations: {
self.logoCenterImageView.alpha = 0
}) { finished in
}
Actually i am using RESlider in my app. In the menu table view there is a profile image and aside to it there is a notification label. Now i want is that when the user presses the hamburger menu the notification label(orange label with 999 number) should animate from a tiny dot to its original size. How to achieve this??
Put this in viewDidAppear
-(void)viewDidAppear:(BOOL)animated{
self.label.transform = CGAffineTransformMakeScale(0.01, 0.01);
[UIView animateWithDuration:0.5 animations:^{
self.label.transform = CGAffineTransformIdentity;
} completion:^(BOOL finished) {
}];
}
myTextLabel.transform = CGAffineTransformMakeScale(0.3, 0.3);
[UIView animateWithDuration:2.0
delay: 0.1
options: UIViewAnimationOptionBeginFromCurrentState
animations:^{
myTextLabel.transform = CGAffineTransformMakeScale(1.5, 1.5); //grow
}
completion:^(BOOL finished){
myTextLabel.transform = CGAffineTransformMakeScale(1, 1);
}];
Change the transform scale of your label, like this :
[UIView animateWithDuration:0.5
delay:0.0
options:UIViewAnimationOptionAutoreverse | UIViewAnimationOptionRepeat | UIViewAnimationOptionCurveEaseInOut
animations:^{
timerLabel.transform = CGAffineTransformScale(timerLabel.transform, 0.7, 0.7);
}
completion:nil];
I want to create button which has "elastic" press down animation.
Animation description:
On press:
scale it on 80% in 0.1s
scale it on 90% in 0.1s // when pressed it should stay at 90% scale
On release:
scale it on 110% in 0.1s
scale it on 100% in 0.1s // when released - scale should finish at 100%
I tried to implement this with code:
-(void) pressedAnimation {
[UIView animateWithDuration:kAnimationTime
delay:0.0
options: UIViewAnimationOptionBeginFromCurrentState
animations:^{
self.transform = CGAffineTransformMakeScale(.8f, .8f);
}completion:^(BOOL finished){
if (finished) {
[UIView animateWithDuration:kAnimationTime
delay:0.0
options: UIViewAnimationOptionBeginFromCurrentState
animations:^{
self.transform = CGAffineTransformMakeScale(.9f, .9f);
}completion:^(BOOL finished){
}];
}
}];
}
-(void) releasedAnimation {
[UIView animateWithDuration:kAnimationTime
delay:0.0
options: UIViewAnimationOptionBeginFromCurrentState
animations:^{
self.transform = CGAffineTransformMakeScale(1.1f, 1.1f);
}completion:^(BOOL finished){
if (finished) {
[self.layer removeAllAnimations];
[UIView animateWithDuration:kAnimationTime
delay:0.0
options:UIViewAnimationOptionBeginFromCurrentState
animations:^{
self.transform = CGAffineTransformMakeScale(1.0f, 1.0f);
}completion:^(BOOL finished){
}];
}
}];
}
Animation works as expected only if "releasedAnimation" is called when "pressedAnimation" is already completed. Else I got very strange effects.
I tried to use [self.layer removeAllAnimations] in both methods but it doesn't work as expected. It seems like UIViewAnimationOptionBeginFromCurrentState doesn't work. What am I doing wrong? Is there a better way to create such an animation?
You could abstract this behavior out to a utility class. Try something like this:
For the .h:
+(void)buttonBobble:(UIButton *)button actionWhenDone:(void(^)(BOOL))action;
For .m:
+(void)buttonBobble:(UIButton *)button actionWhenDone:(void (^)(BOOL))action
{
button.transform = CGAffineTransformMakeScale(0.8f, 0.8f);
[UIView animateWithDuration:0.5f animations:^{
button.transform = CGAffineTransformMakeScale(1.0f, 1.0f);
}completion:action];
}
Of course, you may have to tweak this for the right look you want. You'll also want to add the UIViewAnimationOptionBeginFromCurrentState if you want it to pick up right where the button is at.
I am new to core graphics, I want to show a view from right to left animation using CGAffineTransformScale after completion of this animation I have apply zooming animation to same view.
I can show the right to left animation. But I am unable to show the zooming animation.
Can some one help me to solve the above problem.
Please find the below code what i tried.
toView.layer.anchorPoint = CGPointMake(1, 0.5);
toView.center = CGPointMake(toViewController.view.bounds.size.width,toViewController.view.bounds.size.height/2.0);
toView.transform = CGAffineTransformScale(CGAffineTransformIdentity, -1.0, 1.0);
[UIView animateWithDuration:ANIMATION_DURATION delay: 0.0 options: UIViewAnimationOptionTransitionFlipFromLeft animations:^{
[toView setTransform: CGAffineTransformMakeScale(1.0, 1.0)];
} completion:^(BOOL finished) {
}];
Your scale values are 1.0 that default value, change it to any other value other than 1.0, may be 1.2 to zoom-in, or 0.8 to zoom out.
And I think there should be few additions to your animation block.
[UIView animateWithDuration:ANIMATION_DURATION delay: 0.0 options: UIViewAnimationOptionTransitionFlipFromLeft animations:^{
[toView setTransform: CGAffineTransformMakeScale(1.2, 1.2)]; //Zoom in
} completion:^(BOOL finished) {
if(finished){
[UIView animateWithDuration:ANIMATION_DURATION animations:^{
toView.transform=CGAffineTransformIdentity; //Make things normal.
}];
}
}];
I hope it works.
Cheers.
I want to make a little zoom/fade animation for when the UIImageView shows up in my view, I already have the code for the fade effect:
banner.alpha = 0.0;
[UIView animateWithDuration:2.0 animations:^{
banner.alpha = 1.0;
}];
Now I want to know if there is another easy way to combine the fade effect with a little zoom effect, like the image becoming larger and filling up the frame as it fades in? Any ideas?
Thanks!
you can use CG_EXTERN CGAffineTransform CGAffineTransformMakeScale(CGFloat sx, CGFloat sy) to do the zoom effect
such as
banner.alpha = 0.0;
[UIView animateWithDuration:2.0 animations:^{
banner.alpha = 1.0;
banner.transform =CGAffineTransformMakeScale(1.3,1.3);
}];
You can also use the frame
banner.alpha = 0;
[UIView animateWithDuration:2.0f animations:^(void){
banner.alpha = 1.0f;
[banner setFrame:CGRectMake(0, 0, 1024, 748)];
}];
// With Completion
[UIView animateWithDuration:0.1f animations:^(void){
banner.alpha = 1.0f;
[banner setFrame:CGRectMake(0, 0, 1024, 748)];
}completion:^(BOOL finished) {
}];