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- DeviceAgent Topics
- Errno::EINTR: Interrupted system call AKA RunLoop::Fifo::NoReaderConfiguredError
The problem appears on Xcode < 8.
See the discussion here: https://github.com/calabash/run_loop/issues/35
This is an active issue; no comprehensive solution exists yet.
You can see this error if:
- The bundle identifier is incorrect.
- The app was not signed with a developer certificate.
- The device is not enabled for UIAutomation. Starting in iOS 8, you must enable UIAutomation on the device using the switch in Settings.app > Developer > Enable UIAutomation.
- The device is not enabled for development. We have observed that devices can change from enabled to disabled for development when migrating from iOS 7 to iOS 8 and between iOS 8 betas. The best practice is to restart the device after migrating. See instructions below for verifying that your device is enabled using the Instruments.app.
- The device should appear in Xcode's Devices window (Shift + Command + 2) without a yellow warning.
- The device must appear in Xcode's Scheme > Target device list as eligible. See below for a screenshot.
To work around issue 2, either rebuild the app using a developer provisioning profile via Xcode, or resign the app using a developer certificate / provisioning profile. See Apple Developer for more information.
To work-around 4, 5, and 6, you can try plugging the problem device into another Mac that is running Yosemite and the latest (non-beta) version of Xcode.
There is a simple, definitive test to determine if the Xcode toolchain or Calabash is blame. [1] Please report results in the run-loop GitHub issue. [2]
- [1] https://gist.github.com/jmoody/dad5466e4b9a2d456432
- [2] https://github.com/calabash/run_loop/issues/35
- Connect the device via USB.
- Open Instruments.app for your current version of Xcode.
- Select the Automation template
- In the top left corner of the window, select your device and the a target application.
If your device is not enabled for development, Instruments.app will tell you to open Xcode to enable the device for development.
