There are a few accessibility settings you can check for, or get notifications in case these preferences change. This is especially important when developing custom components as they will mostly work with UIKit controls.
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The .accessibilityElement(children: ) modifier with the .ignore argument does a similar thing to set the container view to be an accessibility element in UIKit. It is the default argument, so you can just say .accessibilityElement(). Because of this, you'll need to use other modifiers to make it accessible and manually configure an accessibility label and value, traits... when necessary. https://developer.apple.com/documentation/swiftui/view/accessibilityelement(children:) https://developer.apple.com/documentation/swiftui/accessibilitychildbehavior/ignore
Manual testing is crucial. And therefore, reducing friction to let you start your testing process can be a huge help. Selecting some accessibility shortcuts will do that, putting most of iOS' accessibility features at a triple-click of a button.
Color contrast between text and background is very important for perceivability. As colors come closer to each other, they’re more difficult to distinguish. Notice that colors that work well with big font sizes may not for smaller text.
