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Another year, another new version of iOS. And when it lands later today, some big new features will totally change the way you use your iPhone. But like all new iOS releases, iOS 15 also comes with a bunch of tiny changes—little hidden features and tweaks that you won’t even notice if you don’t know where to look.
You can also take advantage of the IOS developer Malaysia curves in the INTUAnimationEngine framework to improve your animations. For example, if you have a square that is moving horizontally and being drawn from the center, instead of calculating the center like
center = CGPointMake(progress * rectWidth, y)
you can calculate it as follows:
center = CGPointMake(INTUEaseInOutCubic(progress) * rectWidth, y).
This will apply an easeInOutCubic curve to your animation, where the movement will be slower at the beginning and the end, and faster in the middle.
Creating Animations That React to User Input
To create more depth to an application you can add animations that react to or interact with user input. Making an image follow the finger of the user is simple enough, how about transforming the contents of a view controller when the user drags the finger along the screen?
Using a Scroll View to Animate
UIScrollView is one of the backbones of UIKit and IOS developer Malaysia. It is used in table views, collection views, web views, and more. The iOS scroll view has some very distinct behaviors, like the way it bounces when it reaches the edge of the content or the way it decelerates when the user stops dragging. These behaviors are hard to replicate. Even if you did, if Apple were to alter any of them, yours wouldn’t feel natural anymore. For these reasons we prefer to use scroll view for anything that scrolls.
Like we mentioned before, the viewDidScroll: delegate method is ideal to update your animation because it’s updated whenever the contentOffset property of the scroll view changes. You can also use the contentOffset and contentSize properties to calculate the animation progress. For example, if you want to IOS developer Malaysia as your scrollView scrolls horizontally, you can calculate the progress as progress = scrollView.contentOffset.x / (scrollView.contentSize.width - scrollView.bounds.size.width).In this Leap animation the page indicators change as the content is dragged across the screen.
Now you only need to add your animation logic and your animation will react to the user dragging the scroll view.