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Posts on APIs and techniques for building apps for iPhone Duo
Respond to hinge changes on iPhone Duo with SwiftUI's onHingeChange() modifier, and drive animations and visual effects from the hinge angle as the device folds and unfolds.
Meet Whio, an EPUB and PDF reader for technical books on iPhone and iPad, and explore its reading features, accessibility options, and the story behind its development.
Read the fold's position from SwiftUI's reserved regions on iPhone Duo and lay out grids around it, keeping the number of columns stable as the device folds and unfolds.
ArrangementView lets SwiftUI place two related views side by side, stacked or layered depending on the available space and the fold on iPhone Duo, with split and overlay styles to configure the result.
Review automatic SwiftUI sheet adaptations on iPhone Duo and configure sheet placement and toolbar arrangement to suit the content being presented.
Holding the Option key reveals the hinge angle slider in the iPhone Duo simulator in Xcode 27.1, letting us adjust how far the simulated device is open.
Control how SwiftUI presents toolbar items and tabs on iPhone Duo with the new iOS 27.1 APIs, from arranging custom labels to prioritizing actions when space is limited.