I want to put an animation to custom UIButton's title so that the numbers (each title shows a random assigned number) will come rotating. How can i do that?
The problem is i don't want to do this using flipping number images. i am wondering if there is any other way.
Assuming that you have a button called flipLabelButton connected as IBOutlet to your view controller, you can use this code to animate your button to a new label:
- (IBAction)flipLabelText:(id)sender {
NSString *newText = [NSString stringWithFormat:#"%d", rand() % 100];
[UIView beginAnimations:#"flipbutton" context:NULL];
[UIView setAnimationDuration:1.0];
[UIView setAnimationTransition:UIViewAnimationTransitionFlipFromRight forView:self.flipLabelButton cache:YES];
[self.flipLabelButton setTitle:newText forState:UIControlStateNormal];
[UIView commitAnimations];
}
Related
I want to add a heartbeat effect to my view , one way to do is use UIView's animation method as follow :
- (void)heartBeating
{
UIView *panel;
NSTimeInterval during = 0.8;
[UIView animateKeyframesWithDuration:during delay:0.0
options:UIViewKeyframeAnimationOptionCalculationModeLinear|UIViewKeyframeAnimationOptionRepeat
animations:^{
[UIView addKeyframeWithRelativeStartTime:0.0 relativeDuration:0.4 animations:^{
panel.transform = CGAffineTransformMakeScale(1.2, 1.2);
}];
[UIView addKeyframeWithRelativeStartTime:0.4 relativeDuration:0.6 animations:^{
panel.transform =CGAffineTransformIdentity ;
}];
} completion:^(BOOL finished) {
}];
}
the problem is : if i want to stop the animation in an action , for example , a Stop butotn tapped , how I can do .
I know I can realize the same effect by create CAKeyFrameAnimation and add it to the view' CALayer .But I want to know how to do with the UIView's animation method. Thanks.
Try
[panel1.layer removeAllAnimations];
Hope this will help you.
Is there any way to fade a bar button item, as there is no .alpha attribute to set. I'm interested in fading a button out and fading another button in to take its place on the navigation bar. Is there any way to do this?
EDIT: I am trying to fade the top right Bar Button Item
I understand fading is usually accomplished with the .alpha as I stated before.
My issue is for a Bar Button Item there is NO alpha attribute.
As seen here:
As opposed to a normal button where there is an .alpha attribute:
How can I fade a Bar Button Item?
Easy. You would have to create an outlet for them both then create if statements or whatever method you want to initiate the fade in/ fade out animations:
- (void) animateButton {
button1.alpha = 0;
[UIView beginAnimations:nil context:nil];
[UIView setAnimationCurve:UIViewAnimationCurveEaseIn];
[UIView setAnimationDelegate:self];
[UIView setAnimationDuration:.5];
button1.alpha = 1;
[UIView setAnimationDidStopSelector:#selector(animationDidStop:finished:context:)];
[UIView commitAnimations];
}
- (void) animationDidStop:(NSString *)animationID finished:(NSNumber *)finished context:(void *)context {
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:.5];
button1.alpha = 0;
[UIView commitAnimations];
}
swift
viewDidLoad {
self.button1.alpha = 1
self.button2.alpha = 0
}
When you call Animation Code:
UIView.animateWithDuration(1.0, animations: {
self.button1.alpha = 0
})
// Changing buttons based on UIControlState: You can also do this in storyboard by dragging a bar button item to your view controller and ctrl+drag to your .h file to create an outlet and then commit your animations or code based on what you want.
UIImage *backButtonImage = [[UIImage imageNamed:#"button_back"] resizableImageWithCapInsets:UIEdgeInsetsMake(0, 13, 0, 6)];
[[UIBarButtonItem appearance] setBackButtonBackgroundImage:backButtonImage forState:UIControlStateNormal barMetrics:UIBarMetricsDefault];
in my viewcontroller entered all the objects in a scrollview. One of the buttons inside the scrollView creates an animation.
The scrollView get off the page -80.0 orgine.y
So far so good .. Now I want that when you click on the button the scrollview and then goes back down to -80.0 to +80.0 automatically returning to its original position so ... Can you tell me the best method for you to have this?
This is the action that fulfills my button when pushed ...
- (IBAction)AcceptFriendRequest:(id)sender {
PFObject *SelectedUser = [self.UtentiInAttesa objectAtIndex:[sender tag]];
[SelectedUser setObject:#"Confermato" forKey:#"STATO"];
[SelectedUser saveInBackground];
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDelegate:self];
[UIView setAnimationDuration:0.2];
[UIView setAnimationBeginsFromCurrentState:YES];
FFScrollView.frame = CGRectMake(FFScrollView.frame.origin.x, (FFScrollView.frame.origin.y - 80.0), FFScrollView.frame.size.width, FFScrollView.frame.size.height);
[UIView setAnimationRepeatAutoreverses:YES];
[UIView commitAnimations];
}
In your button event handler
- (IBAction)myBtnClicked:(id)sender {
// Create new CGRect indicate place where you would scroll to.
// Assume it is called `originalRect`
// Use the following method, it should work
[FFScrollView.scroll scrollRectToVisible:originalRect animated:YES];
}
i read alot about faking the animation of pushViewController, but I'm wondering if there is a way to change the actually animation, because I would like to use the navBar and the BackButton of the navigationController.
Currently I'm using this to animate:
- (void)viewWillDisappear:(BOOL)animated {
[super viewWillDisappear:YES];
[views setContentSize:CGSizeMake(self.view.bounds.size.width, self.view.bounds.size.height -40)];
CGRect frame = views.frame;
frame.origin.y = - self.view.bounds.size.height;
[UIView beginAnimations:#"viewSlideUp" context:nil];
[UIView setAnimationCurve: UIViewAnimationCurveEaseInOut];
[UIView setAnimationDuration:0.75];
[UIView setAnimationDelegate:self];
views.frame = frame;
[UIView commitAnimations];
}
but I get an overlapping effect, so my view isn't sliding up, the view is sliding away to the top left side.
Has anyone dealed with that problem? Thx for any kinda help!
I have a UIView that contains a couple UIButtons that I am animating from offscreen to onscreen. I find that the region where they are heading is clickable before they reach it. The animation is pretty simple, so I'm wondering if there is something obvious that I am missing in terms of telling the code to not treat the button as if it is at the final destination (I'm not sure if that is supposed to be the expected behavior and the animation is purely a visual while the clickable region is instantaneously at the destination; I wouldn't expect it to be).
Here is the code I use to animate it. It's basically switching out a sub panel and bringing back a main panel with buttons:
// switch back to main abilities panel
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration: kFadeInTime];
CGRect rect = CGRectMake(
480.0f,
mAbilities.mSubPanel.frame.origin.y,
mAbilities.mSubPanel.frame.size.width,
mAbilities.mSubPanel.frame.size.height);
mAbilities.mSubPanel.frame = rect;
[UIView commitAnimations];
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration: kFadeInTime];
[UIView setAnimationDelay: kFadeInTime];
rect = CGRectMake(
kAbilitiesBorderX,
mAbilities.mPanel.frame.origin.y,
mAbilities.mPanel.frame.size.width,
mAbilities.mPanel.frame.size.height);
mAbilities.mPanel.frame = rect;
[UIView commitAnimations];
As a workaround you can disable user interaction with your panel before animations and reenable it when animation finishes:
// Animation compete handler
- (void)animationDidStop:(NSString *)animationID finished:(NSNumber *)finished context:(void *)context{
mAbilities.mSubPanel.userInteractionEnabled = YES;
}
// Animating panel
mAbilities.mSubPanel.userInteractionEnabled = NO;
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration: kFadeInTime];
[UIView setAnimationDelegate: self];
CGRect rect = CGRectMake(
480.0f,
mAbilities.mSubPanel.frame.origin.y,
mAbilities.mSubPanel.frame.size.width,
mAbilities.mSubPanel.frame.size.height);
mAbilities.mSubPanel.frame = rect;
[UIView commitAnimations];
If you're targeting iOS4 you can (and as specs say should) use block-based animation api:
[UIView animateWithDuration:5.0f delay:0.0f options:UIViewAnimationOptionLayoutSubviews
animations:^(void){
CGRect rect = CGRectMake(
480.0f,
mAbilities.mSubPanel.frame.origin.y,
mAbilities.mSubPanel.frame.size.width,
mAbilities.mSubPanel.frame.size.height);
mAbilities.mSubPanel.frame = rect;
}
completion:NULL
];
While animating using blocks user interaction is disabled by default - you can enable it by setting UIViewAnimationOptionAllowUserInteraction flag in options parameter:
... options:UIViewAnimationOptionLayoutSubviews | UIViewAnimationOptionAllowUserInteraction ...