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We will start with the small introduction with Auto layout Constraints in Swift.
AutoLayout is a system that makes it easy to support multiple screen sizes with just one interface by making the same interface react to changes. AutoLayout is a constraint-based layout system that gives developers the ability to create interfaces that respond to the changes in screen size and device orientation.
Without using auto layout, it would be very hard for you to create an app that supports all screen resolutions.
Create a new Xcode project. Select Single view app.
Open Main.storyboard and add a few elements from the library. Drag the following onto the view controller:
3. Now, select both buttons at the same time and, in the Align menu, check Leading Edges.
Now check the app in different size screen.
There are different techniques you can use when implementing Auto Layout programmatically.
Let’s create a sign- in page.
First of all, we need to set the all fields to translatesAutoresizingMaskIntoConstraints equals to false. This is to prevent the view’s auto-resizing mask to be translated into Auto Layout constraints and affecting your constraints.
After that, you start by set constraints. we use NSLayoutConstraint to set the constraints. The NSLayoutConstraint class defines a relationship between two objects.
NSLayoutConstraint to set the constraints.
LayoutAnchor represents a single constraint, which can be either constant (e.g., fixed-width or height), or relative to another constraint (e.g., leading or trailing).
When activating or deactivating lots of constraints at once, it’s more efficient to pass them as an array to activate() and deactivate() respectively.
Now, run the app.
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We've bought a Shopware Extension which is a hybrid App, which we can now offer in the Google Play Store and the IOS App Store. I'am still impressed how fast and how sharp the support team leads us through every process of the App-Store clarification. Very fast and useful response.
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