uianimation

How to move a view along a curved path in iOS

泄露秘密 提交于 2019-12-04 09:15:37
问题 How to animate/move the view in the curve path, is it possible to do using UIAnimation. Like moving a view in the path as in the image. 回答1: You can do it using Core Animation and CAKeyFrameAnimation to define the curve points. See this tutorial: http://nachbaur.com/2011/01/07/core-animation-part-4/ 回答2: Above one can be achived by:- i)CAKeyframeAnimation ii)Create Curve Path iii)Animate layer of Custom View import UIKit import CoreGraphics class ViewController: UIViewController { var

Animating UINavigationBar in iOS 7 (like Safari)

你。 提交于 2019-12-04 08:28:40
问题 When scrolling content in Safari, the title bar animates to a smaller version of its self. What is the best way to implement this? Currently, I am changing the size of the frame like so: - (void)scrollViewDidScroll:(UIScrollView *)scrollView { // // Table view // CGFloat currentPosition = scrollView.contentOffset.y - CGRectGetHeight(self.tableView.tableHeaderView.frame) + CGRectGetHeight(self.navigationController.navigationBar.frame) + CGRectGetHeight([[UIApplication sharedApplication]

Recreating iOS 7 Calendar UIView Animation

孤者浪人 提交于 2019-12-04 05:35:34
Everybody knows the brand-new awesome animation inside iOS 7 Calendar app. You can see them in this short video: http://vimeo.com/69247779 I would recreating something like that creating a "modal" rectangle that appear when the user taps on a UIButton . When the user taps on this button the app should move an UIView (actually inside an UITableViewCell ) and move it within this rectangle, BUT the original UIView should stay in the same place. It needs to duplicate itself, something alike. I've created a simple image explaining the concept. How to implement something like this? i might suggest

Understanding of UIAnimation

早过忘川 提交于 2019-12-04 02:06:22
问题 I am trying to use following code to perform few animations -(void) performSlidingfromX:(int) xx fromY:(int) yy { UIImageView *Image= [self getImage]; [UIView beginAnimations:nil context:NULL]; [UIView setAnimationDuration: 1.0]; [UIView setAnimationBeginsFromCurrentState:true]; [UIView setAnimationCurve: UIViewAnimationCurveEaseOut]; [token setFrame:CGRectMake(xx, yy, 64, 64)]; [UIView commitAnimations]; } and i am calling like it in for loop for (i = 0; i < totMoves; i++) { Moment *m =

AFNetworking - Fade animation on image while scrolling UITableView

允我心安 提交于 2019-12-03 12:21:24
I have a Table View which displays images using lazy loading from AFNetworking with a placeholder image. I'm trying to accomplish a way to fade from the placeholder to the image when it's loaded. My code here works, but if an image loads while scrolling the table, everything looks odd and the table stops scrolling. Same thing happens to a Horizontal scroller with the same effect. Here's the code I'm using inside cellForRowAtIndexPath [cell.hotelImage setImageWithURLRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:hotelImageUrl]] placeholderImage:[UIImage imageNamed:@"placeholder.png"]

cancel a UIView animateWithDuration before completion

流过昼夜 提交于 2019-12-03 10:06:17
I have this code in my project: - (void) fadeImageView { [UIView animateWithDuration:1.0f delay:0 options:UIViewAnimationCurveEaseInOut animations:^{ self.imageView.alpha = 0.0f; } completion:^(BOOL finished) { //make the image view un-tappable. //if the fade was canceled, set the alpha to 1.0 }]; } however, there are circumstance where i would like to cancel this operation before the imageview has become invisible. Is there a way to cancel this animation mid animation? Update: prefer this answer https://stackoverflow.com/a/21527129/194309 from Borut Tomazin Borut Tomazin From Apple docs: Use

How to move a view along a curved path in iOS

人盡茶涼 提交于 2019-12-03 03:19:38
How to animate/move the view in the curve path, is it possible to do using UIAnimation. Like moving a view in the path as in the image. Julio Gorgé You can do it using Core Animation and CAKeyFrameAnimation to define the curve points. See this tutorial: http://nachbaur.com/2011/01/07/core-animation-part-4/ Above one can be achived by:- i) CAKeyframeAnimation ii) Create Curve Path iii)Animate layer of Custom View import UIKit import CoreGraphics class ViewController: UIViewController { var moveAlongPath:CAAnimation! override func viewDidLoad() { super.viewDidLoad() addAnimation()

Frame property of UIView is not getting assigned inside animation on iOS

眉间皱痕 提交于 2019-12-02 17:12:47
问题 In my iOS app I'm trying to perform following simple animation: - (void)dismissToolbar { NSLog(@"bx: %f by: %f bw: %f bh: %f ", toolbar.frame.origin.x, toolbar.frame.origin.y, toolbar.frame.size.width, toolbar.frame.size.height); CGRect tempRect = CGRectMake(0, toolbar.frame.origin.y + toolbar.frame.size.height, toolbar.frame.size.width, toolbar.frame.size.height); [UIView animateWithDuration:animationsDuration delay:0 options:UIViewAnimationOptionBeginFromCurrentState |

iOS - Animation effects - Image pop-in

半城伤御伤魂 提交于 2019-12-02 17:06:16
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,

Frame property of UIView is not getting assigned inside animation on iOS

核能气质少年 提交于 2019-12-02 10:12:10
In my iOS app I'm trying to perform following simple animation: - (void)dismissToolbar { NSLog(@"bx: %f by: %f bw: %f bh: %f ", toolbar.frame.origin.x, toolbar.frame.origin.y, toolbar.frame.size.width, toolbar.frame.size.height); CGRect tempRect = CGRectMake(0, toolbar.frame.origin.y + toolbar.frame.size.height, toolbar.frame.size.width, toolbar.frame.size.height); [UIView animateWithDuration:animationsDuration delay:0 options:UIViewAnimationOptionBeginFromCurrentState | UIViewAnimationOptionAllowAnimatedContent animations:^{ NSLog(@"bx: %f by: %f bw: %f bh: %f ", tempRect.origin.x, tempRect