I'm using the UIView method animateWithDuration:animations to animate sliding a UIView. It appears slightly choppy. Is there a better method, like CoreGraphics, to accomplish a smoother animation?
You can try to use different UIViewAnimationOptions
The default is UIViewAnimationOptionCurveEaseInOut, but you can try others:
[UIView animateWithDuration:1.0
delay:0.0
options:UIViewAnimationOptionCurveEaseOut
animations:^{
v.center = CGPointMake(400, 400);
}
completion:^(BOOL finished) {
}
];
Related
Add bouncing animation while changing UIVIew frame. I only know how to change frame but I don't know how to set bouncing effect while changing view frame. Below is my code....
[UIView animateWithDuration:0.3 delay:0.0 options:UIViewAnimationOptionBeginFromCurrentState animations:^{
CGRect frame = viewContent.frame;
frame.size.height = CGRectGetHeight(viewContentFullDetail);
viewContent.frame = frame;
} completion:^(BOOL finished) { }];
You can check animated gif image on below link. I want to add animation not same like this but near to this. Main animation are unfolding and bouncing effect.
https://drive.google.com/open?id=0B9k_Shyb5v62eFdxWXhYeXV3a0E
Please help. I don't know how to do this.
You need to try this
int duration, damping, velocity;
[UIView animateWithDuration:duration delay:0
usingSpringWithDamping:damping initialSpringVelocity:velocity
options:0 animations:^{
// your animation code here
} completion:nil];
Play with the damping and velocity values to know more about this feature in the animation code.
here is the link for a tutorial
I'm using an affine transform within a repeating/reversing animation to create a "pulsing" effect. However, I noticed that the button gets shifted right when the animation begins. The anchor point for the button is at (0.5,0.5):
[UIView animateWithDuration:0.5
delay:0
options:UIViewAnimationOptionRepeat|
UIViewAnimationOptionAutoreverse|
UIViewAnimationOptionAllowUserInteraction|
UIViewAnimationCurveEaseInOut
animations:^{
self.recordButton.transform = CGAffineTransformMakeScale(1.2, 1.2);
} completion:^(BOOL finished) {
}];
It appears that when the transform is applied, the origin of the button's frame stays at the same spot.
How can I animate scale transform so the center of the button remains in the same spot once the transform is applied?
I usually play with the frame and CGRect utility functions
[UIView animateWithDuration:0.5
delay:0
options:UIViewAnimationOptionRepeat|
UIViewAnimationOptionAutoreverse|
UIViewAnimationOptionAllowUserInteraction|
UIViewAnimationCurveEaseInOut
animations:^{
self.recordButton.frame = CGRectInset(self.recordButton.frame, -1.2, -1.2);
} completion:^(BOOL finished) {
}];
I want to create a bouncy animation like in the Skitch application - when i press a button, a subview (simple view with several buttons) will appear from the side and will bounce a bit until it stops.
I can't find any standard animation that does that, so how i can implement this animation?
You can try this :
// Hide your view by setting its position to outside of the bounds of the screen
// Whenever you want, call this :
[UIView animateWithDuration:0.5
delay:0
usingSpringWithDamping:0.5
initialSpringVelocity:0
options:UIViewAnimationOptionCurveLinear
animations:^{
// Set your final view position here
}
completion:^(BOOL finished) {
}];
This method is the same as the usual animateWithDuration: but it introduces a spring animation.
Use UIView method:
+ (void)animateWithDuration:(NSTimeInterval)duration
delay:(NSTimeInterval)delay
usingSpringWithDamping:(CGFloat)dampingRatio
initialSpringVelocity:(CGFloat)velocity
options:(UIViewAnimationOptions)options
animations:(void (^)(void))animations
completion:(void (^)(BOOL finished))completion
This will do what you want
Use the UIView method, If you want bouncing effect. Then you need to nested the animation process and give the frame as needed for that view. Here's the example:
CGRect frameOnStart = CGRectMake(200,200 ,60 ,60); //On start show small view
CGRect frameOnAnimate = CGRectMake(80,80 ,150 , 150); //while animate show large view
CGRect frameAfterAnimate = CGRectMake(100,100,120 ,120); //after animate large take it back to original frame. SO it loos like bouncing animation
// Whenever you want, call this :
[UIView animateWithDuration:0.5
delay:0
usingSpringWithDamping:0.5
initialSpringVelocity:0
options:UIViewAnimationOptionCurveLinear
animations:^{
// Set your on Animate position here
view.frame = frameOnAnimate;
}
completion:^(BOOL finished) {
[UIView animateWithDuration:0.5
delay:0
usingSpringWithDamping:0.5
initialSpringVelocity:0
options:UIViewAnimationOptionCurveLinear
animations:^{
// Set your final view position here
view.frame = frameAfterAnimate;
}
completion:^(BOOL finished) {
}]
}];
Thanks.
I'm not sure whether I can describe it properly. It's a kind of UIView, and we see only it's part (with arrow,maybe. on the bottom of screen,maybe). User can click on it, and this view appears fullscreen(usually developer leaves there some additional information). How can I make it?
Try this:
-(void)show
{
[viewObj setFrame:CGRectMake(viewObj.frame.origin.x,viewObj.frame.origin.y,viewObj.frame.size.width, viewObj.frame.size.height)];//Here "viewObj.frame.origin.y" means 568
[UIView animateWithDuration:0.5 animations:^
{
[viewObj setFrame:CGRectMake(viewObj.frame.origin.x,0,viewObj.frame.size.width, viewObj.frame.size.height)];
}
completion:^(BOOL finished)
{
}];
}
-(void)hide
{
[viewObj setFrame:CGRectMake(viewObj.frame.origin.x,viewObj.frame.origin.y,viewObj.frame.size.width, viewObj.frame.size.height)];//Here "viewObj.frame.origin.y" means 0
[UIView animateWithDuration:0.5 animations:^
{
[viewObj setFrame:CGRectMake(viewObj.frame.origin.x,568,viewObj.frame.size.width, viewObj.frame.size.height)];
}
completion:^(BOOL finished)
{
}];
}
i just put the logic that just setting of view Y coordinate of That View and when user click on Button. that et animation and at the re setting the view frame with Y coordinate setting like:
yourview.frame = CGRectMake(0,280,320,568);
[UIView animateWithDuration:2
delay:0.1
options: UIViewAnimationOptionTransitionFlipFromBottom
animations:^{
yourview.frame = CGRectMake(0, 0, 320, 568);
}
completion:^(BOOL finished){
}];
Also see this example:
https://github.com/crocodella/PullableView
Here above github demo this same that you are looking for its output like:
Look at UIView reference:
https://developer.apple.com/library/ios/documentation/uikit/reference/uiview_class/uiview/uiview.html
Specifically:
#property(nonatomic) CGPoint center
And
+ (void)animateWithDuration:(NSTimeInterval)duration animations:(void (^)(void))animations
Example:
[UIView animateWithDuration:2.0 animations:^{
myView.center = CGPointMake(self.view.center.x, self.view.center.y + myOffset);
}];
Duration is in seconds. In this case, 2 seconds.
If you're using AutoLayout, you probably want to change the layout constant, rather then center property.
About Layout Constrains:
https://developer.apple.com/library/ios/documentation/AppKit/Reference/NSLayoutConstraint_Class/NSLayoutConstraint/NSLayoutConstraint.html
Look at constant property. You can also drag a constrain outlet from Interface Builder and access its constant. It's really simple once you get to know it a bit.
I would like to animate the frame change of the UISearchbar. I would like it to expand and collapse when tapped on a search button.
Am using UIViewAnimationBlock to animate
[UIView animateWithDuration:0.5
delay:0
options:UIViewAnimationOptionLayoutSubviews
animations:^{
//Set the frame you want to the search bar
}
completion:^(BOOL finished) {
}];
I have to expand the frame from zero and collapse it back. But while animating, the search bar loses its rounded edges and becomes a rectangle. Here is a screenshot of it while still animating
Well it doesn't look good.. I want it to keep its rounded edges while expanding or collapsing. Is it possible ? If yes how ?
Any help would be much appreciated.
You can not change height of a UISearchBar try setting frames with height of 44px.
And if you want to change height then use CGAffineTransformMakeScale like..
//FOR EXPAND USE THIS:
[UIView animateWithDuration:0.5
delay:0
options:UIViewAnimationOptionLayoutSubviews
animations:^{
self.searchBar.transform = CGAffineTransformMakeScale(1.0, 1.0);
}
completion:^(BOOL finished) {
}];
and
//FOR EXPAND USE THIS:
[UIView animateWithDuration:0.5
delay:0
options:UIViewAnimationOptionLayoutSubviews
animations:^{
self.searchBar.transform = CGAffineTransformMakeScale(0.001, 0.001);
}
completion:^(BOOL finished) {
}];