App Launch Issues from Xcode
When attempting to launch an app on a device using Xcode, a recurring error has been plaguing me.
I optimistically updated Xcode to Version 12.1, hoping this would rectify the situation. However, the error persisted. Despite my efforts in disconnecting and reconnecting the device, the dilemma remained unresolved. Furthermore, clearing all data from ~/Library/Developer/Xcode/DerivedData/ did not alleviate the issue.
Here are the methods to tackle this problem:
Method 1: Update XCode for Compatibility
Before diving into iPhone debugging, it’s crucial to align your Xcode version with the correct iOS version. Here’s a compatibility mapping to guide you:
- Xcode 12.3 → iOS 14.3
- Xcode 12.2 → iOS 14.2
- Xcode 12.1 → iOS 14.1
- Xcode 12 → iOS 14
- Xcode 11.7 → iOS 13.7
- Xcode 11.6 → iOS 13.6
- Xcode 11.5 → iOS 13.5
- Xcode 11.4 → iOS 13.4
For the latest Xcode versions, visit the official Apple Developer site.
If the error persists, consider unpairing your device via Window > Devices and Simulators. Afterward, clean Xcode, reconnect, trust the device, and attempt to run the app again.
Method 2: Incorporate iOS Device Support Files
Directly download the 14.2.zip file and unzip it. Proceed by copying and pasting the extracted folder to: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport/. Conclusively, reboot Xcode for changes to take effect.