Ios uiscrollview

Since the introduction of Auto Layout to iOS, ios uiscrollview, there is a new way you can configure your scrolling content. With Auto Layout, the amount of code you have to write is greatly reduced. Ios uiscrollview of the big pain points with the old way of setting up a UIScrollView was communicating the content size to the scroll view. It was fairly straightforward to calculate your content size if the content in the UIScrollView was an image.

UIScrollView has gone through some major improvements. Starting with iOS 11, Apple introduced content and frame layout guides to make it a little less confusing to configure the content inside of your scroll view. Xcode 11 also added these layout guides to interface builder. I will also show you how the scroll view can move your content out of the way of the pop-up keyboard. Are you working on a project that cannot target iOS 11 yet? No worries.

Ios uiscrollview

This tutorial assumes you understand how to use Interface Builder to add objects and connect outlets between your code and storyboard scenes. Use the Download Materials button at the top or bottom of this tutorial to download the starter project, then open it in Xcode. Continue using the iPhone 8 simulator for the rest of the tutorial. Open Main. Then, move Image View inside your newly-added Scroll View. Your document outline should now look like this:. To fix them, select Scroll View and click the Pin button at the bottom of the storyboard window. Add four new constraints: top, bottom, leading and trailing. The result should look like this:. Now, select Image View and add the same four constraints on it. Thanks to the scroll view, you can now swipe to see the full-size image! But what if you want to zoom in and out?

In fact you should be able to use a stack view as your container view. This is called after every zoom action, ios uiscrollview.

Scroll views have two main purposes:. Scroll views are created as any other view is, either programmatically or in Interface Builder. After that, only a small amount of additional configuration is required to achieve basic scrolling capabilities. A scroll view is created and inserted into a controller or view hierarchy like any other view. There are only two additional steps required to complete the scroll view configuration:.

This project is a self-contained example done completely in the Interface Builder. You should be able to work through it in 10 minutes or less. Then you can apply the concepts you learned to your own project. Here I just use UIView s but they can represent whatever view you like ie, button, label, etc. I also chose horizontal scrolling because the storyboard screenshots are more compact for this format.

Ios uiscrollview

UIScrollView has gone through some major improvements. Starting with iOS 11, Apple introduced content and frame layout guides to make it a little less confusing to configure the content inside of your scroll view. Xcode 11 also added these layout guides to interface builder. I will also show you how the scroll view can move your content out of the way of the pop-up keyboard. Are you working on a project that cannot target iOS 11 yet? No worries. I want to give you a sense of what we are building, so you can follow along and see how the view is constructed. I created a view with some labels, text fields, and an image. If you want to see the finished project, I put the entire project on GitHub.

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In my scenario when i try to enter in a text field the menu also scrolls up. There seems to be a bug in the keyboardDidShow method. May 12, January 7, However this part is the most confusing because Apple has repurposed the constraints in this case to indicate to the UIScrollView the boundaries of your content and therefore calculate the content size. Once you start editing a text field, the keyboard animates into view, and your scroll view animates the active text field to be above the keyboard. Layout all labels in the storyboard. The next step in laying out our controls is to create a single child view of the UIScrollView where we will put all of our content. November 18, Run the app and now when you zoom out the image will take up as much space on the screen while being fully visible.

This tutorial assumes you understand how to use Interface Builder to add objects and connect outlets between your code and storyboard scenes.

KUmar says:. All videos. In the viewDidLoad function, add the view controller as an observer. February 23, July 7, Now add some constraints to your scroll view to place it where you want it in your main view. For reference, you can download both completed project files here. Moving Content under the Keyboard into View If you have UITextFields near the bottom of your content view and the keyboard pops up, it blocks the bottom half of your screen; you cannot see what you are typing. Mike Crandall says:. I tried to play around with the example. This will result in a parallax effect of the views. All books. Robert says:.