You'll see a red screen with an error.Open your React Native app on your device.Make sure your laptop and your phone are on the same Wi-Fi network.You can find the IP address in System Settings (or System Preferences) → Network. You'll need your development machine's current IP address before proceeding. You'll first need to install the app on your device using a USB cable, but once that has been done you can debug wirelessly by following these instructions. You can also connect to the development server over Wi-Fi. Your app will reload whenever your JavaScript code has changed. Interface Builder already has something like this.You can now enable Live reloading from the Dev Menu. When previewing on the iPad I want to see view widths that match the various split screen and slide over modes. I can then use the device settings to view the layout on those different devices in different orientations and dynamic type sizes all without writing any preview configuration code. For example, on the narrowest iPhone SE, a “normal” iPhone and iPhone Max. If I’m building an adaptive layout I want to preview it at the various breakpoints. For example, add an option to the device variants menu to select recommended iPhone/iPad variants which generates previews for a selection of devices sizes (it doesn’t have to be all supported models). I want an easier way to vary which device type the preview is using. I like the device variants button in Xcode 14 but it doesn’t go far enough for me. Xcode 14 allows you to preview views that are in a Swift package without needing a containing application. The Preview on Device button works as before to show the preview on a physical device. Note that the canvas device settings doesn’t show the dynamic type option since we are already applying the dynamic type variant. For example, showing all dynamic type variants in landscape: What’s more useful is they work together with the device variants so you can try different combinations. The canvas device settings let you vary the color scheme, orientation or dynamic type setting for the preview as with Xcode 13: Instead you can rely on the canvas controls to preview the layout for all possible variants. I think the idea is that you shouldn’t need to set the environment in your preview code like this:Ĭountr圜ell ( country : Country. This doesn’t work if you’ve already overriden the trait in your preview configuration code. For example, here’s the dynamic type preview: For example, light and dark color schemes, portrait, landscape-left and landscape-right orientations or all twelve variants of dynamic type. Xcode generates all possible variants of the preview. You choose between color scheme, orientation or dynamic type: I find this harder to scan though maybe showing one preview at a time uses less resources? Device Variantsįor me, the most promising new feature is the one-click device variants that creates a preview for all variations of a trait. By contrast, Xcode 14 shows each preview on a separate page with the page controls allowing you to switch between each preview: The previews are all visible on the same page. For example, here’s a preview of a list row at various dynamic type sizes, interface style and language direction previewed in Xcode 13: One difference that I’m not sure I like is that multiple previews are now shown on separate pages. The Selectable control switches back to the non-interactive mode where selecting a view in the source code highlights it in the canvas: The first big difference in Xcode 14 is that previews are live and interactive by default. The canvas controls are a mix of the old and new: The canvas controls are in the bottom left corner and the zoom controls are in the bottom right: Next to the pin control are the new page controls. The pin control is now in the upper left corner and works as before allowing you navigate to different source files while pinning the preview in the canvas. Xcode 14 brings a new look to the preview canvas. Xcode 14 brings a new look and features to SwiftUI previews that might reduce the amount of preview configuration code you need.
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