Xcode

Inspecting network traffic is an essential skill for app developers. Several tools allow you to monitor requests going in and out of your app, each with pros and cons. When building an app, you'll likely perform network calls to fetch data for your views. Whether you're debugging a request failure ...

Xcode Build Insights lets you keep track of compilation times to ensure your project doesn't suddenly become slow to build. You're likely building your project tens of times per day, so compilation times that become slower can significantly impact your overall productivity. While Xcode keeps a history of your builds, ...

Apps submitted to the App Store must define API declarations using the required reasons. Apps that don't will be rejected until they do. This requirement counts for APIs declared in your app's code and third-party libraries. For the latter, you might be dependent on the library maintainers. While Apple provides ...

When you receive an unreadable crash report, you can symbolicate crash logs with the help of Xcode. As a developer, it's essential to identify symbols and ensure you can fix a crash that potentially affects many of your app's users. Many of us will benefit from an online platform like ...

The Xcode Debug Console allows you, as a developer, to explore logs and debug issues with your apps. All your logs will be printed out, and you can interact with the LLDB debugger as soon as your app pauses manually or due to a breakpoint. Xcode 15 introduced a new ...

Localization testing becomes vital if your apps are localized in multiple languages. You want to ensure your UI looks good in each language, making you repeatedly run your app in each locale. Some words are different in length depending on the language, making it crucial to verify your interfaces. Xcode ...

Starting with Xcode 15 and Swift 5.9, you can create previews for your SwiftUI view using the new #preview Macro. The macro replaces the PreviewProvider protocol that required us to define previews within a static computed property. Swift 5.9 also introduced Macros, the concept behind this new hashtag attribute. I ...

Xcode Bookmarks were introduced during WWDC 2023 as part of the significant Xcode 15 release. They are a new feature that allows you to save quick links to code you want to revisit. Doing so allows you to save code landmarks and organize tasks you have to fulfill. You can ...

Using the latest Xcode 14.3 and the iPad Pro (12.9 Inch) with iOS 16.4 beta, I've been able to run Xcode on top of the iPad Simulator. Running apps from Xcode will run on this Simulator directly, and debugging works as usual. The window might be small, but reading most ...

Xcode Simulator directories allow you to find related files for your app. Unlike on a real device, you can access all folders that represent the app your building. Exploring those directories allows you to debug and optimize accordingly. Whether you're debugging storage issues, optimizing app binary size, or looking to ...

Unit tests in programming languages ensure that written code works as expected. Given a particular input, you expect the code to come with a specific output. By testing your code, you're creating confidence for refactors and releases, as you'll ensure the code works as expected after running your suite of ...

StoreKit testing in the Simulator allows you to speed up testing in-app purchases for your app. You can test in-app purchases in Xcode by generating a StoreKit configuration file containing the available products for your app. You'll be able to purchase products without connecting to App Store servers, without an ...