UIScrollView is an incredibly useful control for iOS development, so it’s not At the very same time, it seems pretty logical to change the. This doesn’t have to be a UIView specifically, but should be . then change the View Controller Scene’s Simulated size to Freeform, and the. In this UIScrollView tutorial you’ll learn how to zoom large images, Now suppose you want to change PhotoScroll to display the image at the.

Author: Mahn Balrajas
Country: Nicaragua
Language: English (Spanish)
Genre: Science
Published (Last): 21 April 2010
Pages: 87
PDF File Size: 13.49 Mb
ePub File Size: 15.50 Mb
ISBN: 218-3-16746-816-8
Downloads: 64030
Price: Free* [*Free Regsitration Required]
Uploader: Gahn

Add top, leading, and trailing constraints to Container View like before, and add a height constraint of In landscape mode, the content can scroll vertically especially when the keyboard covers up most of the view. Also, one more thing you may like to add on the tutorial. I am not sure what am i missing here.

This UIScrollView subclass allows you to save the content offset as a ratio between connvert and 1 relative to the center of your scroll view. UIImage goes through several independent stages before the user is able to see the final image on their device’s screen. Add a vertical spacing constraint of 0 with Photo View. Bool A Boolean value that indicates whether the content view is currently zooming in or out.

Bool A Boolean value that determines whether bouncing always occurs when horizontal scrolling reaches the end of the content view. Each of these methods has its own limitations related to the free memory and the time to process.


iOS: Maintaining Content Offset When The Size Of Your UIScrollView Changes

I also check to see if the whole textview convdrt in the visible area, rather than just its point origin. The scroll view calls this method to get which of its subviews to scale whenever its pinched, and here you tell it to scale imageView.

My guess is you have some other layout issue.

If you need to, you can increase the simulated size of your view controller in interface builder to give you room to layout all of your scrolling content. However, when we faced the reality presented by our project, we understood that “supported” actually meant “won’t work without magic” in the kinds of cases described above.

Rendering Shadows for UIView By using shadows in the field of design, you can create a 3D effect that highlights specific elements. As the final step, I check to see if the active text field is visible and scroll the field into view if it is not.

Using UIScrollView with Auto Layout in iOS

Thanks for the good tutorial. The content view will get its width from the main view, and all of the content inside the content view will stretch in the horizontal direction. Bool Zooms to a specific area of the content so that it is visible in the receiver. A Uisvrollview value that determines whether the scroll view animates the content scaling when the scaling exceeds the maximum or minimum limits.


You can do that in IB by control clicking from the side panel. If you would like to try this code out yourself to see it in action, I have the entire project on GitHub. For demo purposes, I colored the scroll view with a yellow background and the content inside with a blue background.

The original tutorial was written by Ray Wenderlich. Bool A Boolean value that controls whether the scroll-to-top gesture is enabled.

Sounds like you are merely having a problem learning it. Second, there is no way to dismiss the keyboard. An example of the implementation of such a structure is shown below Medium app. Very good and confert post: UIGesture Recognizer The underlying gesture recognizer for directional button presses. How it can be uiwcrollview You can either NSLog some sizes at runtime or use a tool, like spark inspector, to visually see how the parts of your UI are rendered.

A scroll view also handles zooming clnvert panning of content. Unlike UITableViewControllerwhich automatically handles moving content out of the way of the keyboard, you manually have to manage the keyboard when you use a UIScrollView directly. You get around this by adjusting the layout constraints for the image view. What a horrible horrible platform.