Im trying to make a custom view where one of it's elements(a UILabel) has animation that when a button of the custom view is tapped the label should expand and then contract. The first part of the animation happens correctly but not the second. Im using this method.
[UIView animateWithDuration:1.3 animations:^{
CGRect frame = CGRectMake(50, 15, 140, 20);
[labelFav setFrame:frame];
} completion:^(BOOL finished) {
//[labelFav setHidden:YES];
[UIView animateWithDuration:1.3 animations:^{
CGRect frame = CGRectMake(50, 15, 0, 20);
[labelFav setFrame:frame];
}];
}];
I believe it's a problem with how the methods Refresh and LayoutSubviews are implemented.
I did it following this tutorial, ray wenderlinch
The problem comes when after the first animation is called, LayoutSubviews is called, so all the items are set to the initial position, and when the first animation is finished the second one starts but the items are set to the original state, so I believe the animation doesnt happen because there's been a change between animations.
I would like to know how to implement this correctly, can you lend me a hand?
Thanks.
PS: This is a second question about the same problem but with a different angle.my previous question
[UPDATE]
This is my code for LayoutSubviews:
- (void)layoutSubviews {
[super layoutSubviews];
if(_idEvent == 0) return;
_buttonFav = [[UIButton alloc]initWithFrame:CGRectMake(0, 0, 40, 40)];
[_buttonFav setImage:[UIImage imageNamed:#"fav.png"] forState:UIControlStateNormal];
[_buttonFav addTarget:self action:#selector(pressedFavButton:) forControlEvents:UIControlEventTouchDown];
_labelButton = [[UILabel alloc]initWithFrame:CGRectMake(0, 45, 0, 20)];
_labelButton.text = #"LABEL";
[self addSubview:_labelButton];
[self addSubview:_buttonFav];
}
Which is called right before the second animation. My refresh method is:
- (void)refresh {
if(selected){
[_buttonFav setImage:[UIImage imageNamed:#"fav_sel.png"] forState:UIControlStateNormal];
}
else{
[_buttonFav setImage:[UIImage imageNamed:#"fav.png"] forState:UIControlStateNormal];
}
}
Where I just set the image for the button depending on an attribute that lets me know if the button was tapped.
I do, how to make an animation with Auto-layout then? With the new
XCode you dont have an a option to disable it.
Add a width constraint to a label. Then create IBOutlet to this constraint in your implementation file (see the section 3. here, if you don't know how to do that), let's say something like:
#property (weak, nonatomic) IBOutlet NSLayoutConstraint *buttonWidthConstraint;
Then you can animate it this way:
[UIView animateWithDuration:1.3 animations:^{
self.buttonWidthConstraint.constant = 140;
[self.view layoutIfNeeded];
} completion:^(BOOL finished) {
[UIView animateWithDuration:1.3 animations:^{
self.buttonWidthConstraint.constant = 0;
[self.view layoutIfNeeded];
}];
}];
use SetTransform and CGAffineTransform
try this out
[UIView animateWithDuration:1.3 animations:^{
[labelFav setTransform:CGAffineTransformMakeScale(0.5,0.5)];
} completion:^(BOOL finished) {
[UIView animateWithDuration:1.3 animations:^{
[labelFav setTransform:CGAffineTransformMakeScale(1.0,1.0)];
}];
}];
Try to encapsulate the UILabel into a UIView and animate that view.
UIView *auxView = [[UIView alloc] initWithFrame:CGRectMake(0.0, 0.0, 100.0, 100.0)];
[auxView addSubview:labelFav];
[UIView animateWithDuration:1.3 animations:^{
CGRect frame = CGRectMake(50, 15, 140, 20);
[auxView setFrame:frame];
} completion:^(BOOL finished) {
//[labelFav setHidden:YES];
[UIView animateWithDuration:1.3 animations:^{
CGRect frame = CGRectMake(50, 15, 10, 20);
[auxView setFrame:frame];
}];
}];
Related
I have a container view that has one subview. I want to replace this subview with another view which has a different size than original, so the container should be resized as well. Here's what I'm trying to do
UIView *content = NEW_CONTENT;
content.translatesAutoresizingMaskIntoConstraints = NO;
[self.contentContainer layoutIfNeeded]; // the container view
// make the old content disappear first
[UIView animateWithDuration:0.3
animations:^{
UIView *oldContent = [self.contentContainer.subviews firstObject];
oldContent.alpha = 0.0f;
}
completion:^(BOOL finished) {
// then replace it with a new content
[UIView transitionWithView:self.contentContainer
duration:0.1
options:0
animations:^{
[[self.contentContainer.subviews firstObject] removeFromSuperview];
[self.contentContainer addSubview:content];
[content autoPinEdgesToSuperviewEdgesWithInsets:UIEdgeInsetsZero];
[self.contentContainer layoutIfNeeded];
}
completion:^(BOOL finished) { // completion stuff}];
}];
Old content opacity animates properly, but the layout is changed without any animation. How could I fix it?
//3 views(container,first,second) allocate in viewdidload
UIView *container=[[UIView alloc] initWithFrame:CGRectMake(20, 20, 250, 300)];
container.backgroundColor=[UIColor redColor];
[self.view addSubview: container];
UIView *first=[[UIView alloc] initWithFrame:CGRectMake(100, 50, 100, 100)];
first.backgroundColor=[UIColor blueColor];
[self.view addSubview: first];
UIView *second=[[UIView alloc] initWithFrame:CGRectMake(50, 50, 200, 150)];
second.backgroundColor=[UIColor purpleColor];
second.alpha=0;
[self.view addSubview: second];
//Animation Function with first view removed adn changing the frame of container and adding the second view
[UIView transitionWithView:first duration:1.0 options:UIViewAnimationOptionTransitionCrossDissolve animations:^{
first.alpha=0.0;
} completion:^(BOOL finished) {
[UIView transitionWithView:second duration:1.0 options:UIViewAnimationOptionTransitionCrossDissolve animations:^{
container.frame=CGRectMake(50, 10, 100, 200);
second.alpha=1.0;
} completion:^(BOOL finished) {
}];
}];
I think so u r trying this same scenario.it works perfectly in my case
Example screen capture:
What is a better way to animate the resizing of a UIView that includes subviews?
My current method:
In the screen capture, the parent UIView (orange) has a subview UILabel (yellow + autoresizing). animateWithDuration is animating the resizing of the parent UIView's frame. The problem with this method is it does not animate the resizing of the subview. It abruptly changes, where it should scale animatedly.
Is explicitly animating the subview best, or is there a more efficient method? (e.g. CGAffineTransform?)
Sample code:
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
self.parentView = [[UIView alloc] initWithFrame:CGRectMake(10, 100, 200, 200)];
self.parentView.backgroundColor = [UIColor orangeColor];
[self.view addSubview:self.parentView];
self.childLabel = [[UILabel alloc] initWithFrame:CGRectMake(10, 10, 180, 180)];
self.childLabel.autoresizingMask = UIViewAutoresizingFlexibleWidth |
UIViewAutoresizingFlexibleHeight;
self.childLabel.backgroundColor = [UIColor yellowColor];
[self.parentView addSubview:self.childLabel];
[NSTimer scheduledTimerWithTimeInterval:2
target:self
selector:#selector(randomizeParentViewSize)
userInfo:nil
repeats:YES];
}
- (void)randomizeParentViewSize {
CGFloat width = arc4random_uniform(100) + 50;
CGFloat height = arc4random_uniform(100) + 50;
[UIView animateWithDuration:1.5f
delay:0.0f
options:0
animations:^{
self.parentView.frame = CGRectMake(10, 50 + height, width, height);
}
completion:^(BOOL finished) {
}];
}
I Guess Your Yellow SubView is UILabel ?
When UILabel change frame size in UIViewAnimation will scale Immediately
unless you use the CGAffineTransformScale
some example
when
[self.view addSubview:view_parent];
[view_parent addSubview:view_component];
if both view_parent and view_component is UIView
[UIView animateWithDuration:2.0 animations:^{
[view_parent setFrame:CGRectMake(0, 20, 160, 160)];
[view_component setFrame:CGRectMake(20, 20, 80, 80)];
}];
is work fine
but when view_parent is UIView and view_component is UILabel
you need do something like ...
[UIView animateWithDuration:2.0 animations:^{
[view_parent setFrame:CGRectMake(0, 20, 160, 160)];
view_component.transform = CGAffineTransformScale(view_component.transform, 0.5, 0.5);
[view_component setFrame:CGRectMake(20, 20, 80, 80)];
}];
Wish help ~
To animate the view and also the subview you could use this code:
[UIView animateWithDuration:0.5f animations:^{
self.testView.transform = CGAffineTransformMakeScale(0.5, 0.5);
}];
More Info
You can't use frame, bounds, or center if you are also animating things using CGAffine, So if you also need to move the view use something like this:
CGAffineTransform transform = CGAffineTransformMakeTranslation(150,400);
transform = CGAffineTransformScale(transform, 0.5, 0.5);
Use UIViewAnimationOptionLayoutSubviews:
Add proper leading, trailing, top and bottom constraints on the subview.
[UIView animateWithDuration:0.2 delay:0 options:UIViewAnimationOptionLayoutSubviews animations:^{ //resize the superview
} completion:nil];
I have a swipe gesture on UITableViewCell, when it happens a button appears
I'd like to add animation to that button, animation should reveal the button from left to right.
What do I need to add to the following code, so the button will appear/fade in from left to right?
// set the original frame
button.frame = CGRectMake(30, 50, 100, 100);
// animate
[UIView animateWithDuration:0.75 animations:^{
button.frame = CGRectMake(10, 70, 100, 100);
}];
This is how you can do it:
UIButton* animatingButton = [[UIButton alloc]initWithFrame:CGRectMake(0, 200, 100, 100)];
[animatingButton setTitle:#"text" forState:UIControlStateNormal];
[self addSubview:animatingButton];
[UIView animateWithDuration:1.0 delay:0.0 options:UIViewAnimationOptionCurveEaseInOut animations:^{
animatingButton.frame = CGRectMake(220, 200, 100, 100);
} completion:^(BOOL finished) {
// your animation finished
}];
If you want to programmatically add a UIButton you have to first create the object and then add it in a UIView. After that you can do animations with it.
I use the following lines of code:
[UIView animateWithDuration:0.50
animations:^{ itemView.transform = CGAffineTransformIdentity; }
completion:^(BOOL finished) { if (finished) [itemView removeFromSuperview]; }];
The animation does nothing. If I take the removeFromSuperview out of the completion block, it doesn't work either, I guess because the view is removed before it completes. So, either way, the appearance is the same - no animation.
I'll appreciate any suggestion or workaround on this.
Are you setting the transform correctly? The below is an example of scaling a UIView to zero area and then removing it from the superview.
UIView *itemView = [[UIView alloc] initWithFrame:CGRectMake(10, 10, 200, 200)];
[itemView setBackgroundColor:[UIColor redColor]];
[self.view addSubview:itemView];
CGAffineTransform trans = CGAffineTransformScale(self.view.transform, 0, 0);
[UIView animateWithDuration:2.5 delay:0 options:0 animations:^{
itemView.transform = trans;
} completion:^(BOOL finished) {
[itemView removeFromSuperview];
}];
I tried to add SubView with animation following codes.It's okay.
[self.view addSubview:pickerView];
pickerView.frame = CGRectMake(0, 0, 320, 50);
[UIView animateWithDuration:1.0
animations:^{
pickerView.frame = CGRectMake(0, 152, 320, 260);
}];
And i also want to remove the subView with slide animation like above animation.
How can i do that?
Thanks in advance.
you could use this animateWithDuration completion block to remove the view
[UIView animateWithDuration:1.0
animations:^{
pickerView.frame = //move it out of screen
} completion:^(BOOL finished) {
[pickerView removeFromSuperView];
}];
[UIView animateWithDuration:.2 animations:^{
pickerView.frame = CGRectMake(0, 0, 320, 50);
} completion:^(BOOL finished){
[pickerView removeFromSuperView];
}];