Скачать или смотреть How to Solve the Xcode App Killing Issue on iOS

Discover how to fix the annoying issue in Xcode where your app won't open unless you build and run it again. Follow our easy guide to resolve it effectively!
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Troubleshooting the Xcode App Killing Issue on iOS

Developing apps for iOS can be both exciting and challenging. One frustrating issue that some developers encounter is related to their app being killed and then not launching until the app has been built and run again in Xcode. This problem can severely affect your workflow and efficiency, especially during testing. In this post, we'll take a closer look at this problem and provide you with a practical solution.

The Problem: App Won't Restart in Xcode

After building and running your app in Xcode, there might be instances where the app gets killed—whether by the user or due to system limitations (like memory management). Once killed, the app refuses to open unless you build and run it again in Xcode. This issue appears both on real devices and simulators, frustrating many developers.

What Causes the Issue?

While at first glance, it might seem like a bug in Xcode (as noted by some developers), the issue is often related to how environment variables are handled during app execution. Specifically, if your app relies on certain variables set in the Xcode environment, it can lead to problems if the app is run outside of Xcode’s context.

The Solution: Fixing Environment Variables

Fortunately, addressing this issue is relatively straightforward. The core of the problem lies with an environment variable that your app expects to be present when running inside Xcode. Here's how to resolve it:

Step-by-Step Breakdown

Identify the Environment Variable:
You may have an Environment Variable configured in your app's schema that Xcode provides its value for when the app runs.

Modify Your Code:
If the app runs outside of Xcode without this variable, it can cause unexpected behavior or crashes. Below is an example of code that may cause issues due to this missing variable:

[[See Video to Reveal this Text or Code Snippet]]

Provide a Fallback:
To ensure your app can run smoothly outside of the Xcode context, you can modify the code to handle this situation better. Instead of crashing, provide a fallback or a default value if the environment variable is not found.

Example Code:

[[See Video to Reveal this Text or Code Snippet]]

Benefits of the Solution

Improved Stability: Your app will now be able to launch even if the expected environment variable is not set by Xcode.

Enhanced Development Experience: You won’t need to keep rebuilding the app each time it fails to remain open after being killed.

Future-Proofing: This adjustment not only fixes the current issue but also prevents similar problems from arising under different circumstances.

Conclusion

If you've been grappling with the frustration of your iOS app refusing to restart after being killed, you are not alone. Fortunately, understanding and addressing the issue with environment variables can save you time and increase your productivity. By following the simple steps outlined above, you can effectively resolve this annoying problem and get back to focusing on what you do best: creating great apps.

If you found this guide helpful or have any additional questions, feel free to leave a comment below! Happy coding!